which of the following is formed from a matrix of collagen fibers embedded in a hard mineral substance? cartilage bone adipose tissue fibrous connective tissue

Answer:

Attached, or bound, ribosomes are found on the exterior of an organelle called the endoplasmic reticulum.

Answer:

C. Plants use water, carbon dioxide, and the energy from the sun to carry out the process of photosynthesis.

Explanation:

In this scenario, the geosphere is represented by the plants, which are rooted in the Earth's surface. The hydrosphere is represented by the water that the plants use, and the atmosphere is represented by the carbon dioxide that the plants take in through photosynthesis. This interaction involves the exchange of matter and energy between the three spheres, with the plants using water, carbon dioxide, and sunlight to produce energy and oxygen.

Answer:

The answer choices to this question are:

A) She releases cement particles into a random number of the coral samples.

B) She uses three different types of coral to establish her dependent variables.

C) She treats the coral samples identically with varying levels of carbonic acid.

D) She obtains her coral samples from coral reefs surrounding different continents.

Best Answer is:

A) She releases cement particles into a random number of the coral samples.

Theory:

It has been researched that ocean acidification caused by carbon dioxide emissions causes a decrement in the coral reef growth and this will keep slowing down unless steep and rapid reductions in greenhouse gas emissions are made. And the Coral reefs offered economic opportunities would advantage the surrounding communities from fishing and tourism.

i did this question so thats why i know the answer choices

hope this helpsss

Answer:  C.   She treats the coral samples identically with varying levels of carbonic acid.

Explanation:  I just took the test and this is correct

Answer:

at the moment i am thinking of 3 different hydra, marvel, mythical creature and creation on sexual reproduction between plants. If you could tell me the subject i could explain it to you. :)

Explanation:

True. The front third of the tongue is the part of the oral cavity most likely to provoke the gag reflex.

The tongue is a muscle organ in the oral cavity that is essential for speaking, taste, and chewing, among other vital processes. It is made up of glands, muscles, and nerves that cooperate to manipulate food during the mastication process and aid in swallowing. Numerous taste buds on the tongue's surface enable humans to recognise various flavours, and the tongue's motions aid in combining saliva and food to start the digestion process. The tongue is also necessary for speech since it aids in sound formation and word articulation. The tongue is an intricate and important organ that is involved in many facets of daily living.

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Vasoconstriction of the afferent arterioles will increase the hydrostatic pressure in the glomerulus, thereby decreasing filtration.

In the renal system, the glomerulus is a specialized capillary network within the nephron responsible for the initial filtration of blood to form urine. The afferent arteriole supplies blood to the glomerulus, while the efferent arteriole carries blood away from it. Vasoconstriction refers to the narrowing of blood vessels, including the afferent arterioles. When afferent arterioles constrict, the diameter of these blood vessels decreases. This constriction restricts the blood flow into the glomerulus, resulting in increased resistance to blood flow. As a consequence, the hydrostatic pressure within the glomerulus, also known as glomerular hydrostatic pressure, increases. This increased pressure opposes the filtration process by counteracting the filtration pressure gradient across the glomerular capillaries. Consequently, less fluid and solutes are forced out of the blood vessels and into the glomerular filtrate.

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The conversion of pyruvate to phosphoenolpyruvate in gluconeogenesis requires two steps because the reaction needs to be reversed compared to the single step reaction that takes place in glycolysis.

Pyruvate to phosphoenolpyruvate conversion requires two steps, unlike the phosphoenolpyruvate to pyruvate conversion in glycolysis, which requires only one step. The reasons for this difference are as follows:

The first step involves the carboxylation of pyruvate to oxaloacetate, which is catalyzed by the enzyme pyruvate carboxylase.

The addition of carbon dioxide is the result of this reaction.ATP is used to convert oxaloacetate to phosphoenolpyruvate, which is the second step. This is accomplished by the enzyme phosphoenolpyruvate carboxykinase, which converts oxaloacetate to phosphoenolpyruvate.

ATP is required for this reaction because it has a high phosphate-transfer potential, which allows it to generate the necessary energy for the reaction. In glycolysis, phosphoenolpyruvate is formed by the dephosphorylation of 2-phosphoglycerate, which is catalyzed by the enzyme enolase.

Therefore, two steps are required to convert pyruvate to phosphoenolpyruvate in gluconeogenesis, compared to the single step that converts phosphoenolpyruvate in glycolysis.

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In order to extract ug/l levels of polychlorinated biphenyls (PCBs) from environmental water sample, the following procedures can be followed:Selection of extraction material:

Usually, some types of solid-phase materials such as silica gel, charcoal, C18 reverse-phase silica (RP-Si), polyurethane foam, and styrene-divinylbenzene resin (SDVB) are used for PCBs extraction.Pre-conditioning of extraction material: Before loading water samples onto the extraction material, it is necessary to precondition the extraction material in order to remove any impurities that may interfere with the PCBs extraction. The preconditioning process involves washing the extraction material with an organic solvent such as hexane, dichloromethane or acetone, followed by rinsing with distilled water.Preparation of water sample: Filter the water sample through a glass fiber filter and adjust the pH to 2-3 using concentrated hydrochloric acid. The sample is then loaded onto the extraction material.Extraction of PCBs: For the extraction of PCBs, the solid-phase material can be packed into a cartridge, column or disk. The water sample is passed through the extraction material under vacuum or gravity flow. The PCBs are adsorbed onto the extraction material, while other organic and inorganic compounds are removed by the washing step. The PCBs are then eluted from the extraction material using an appropriate solvent such as hexane, dichloromethane or acetone, and the solvent is evaporated using a rotary evaporator or nitrogen gas stream. The residue is reconstituted in an appropriate solvent and analyzed using gas chromatography with electron capture detector.

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Answer:

Dominant traits are always expressed when the connected allele is dominant, even if only one copy of the dominant trait exists. Recessive traits are expressed only if both the connected alleles are recessive.

Explanation:

Answer:

Calcium

Explanation:

Calcium has 20 neutrons

Neon has 10 neutrons

Boron has 6 neutrons

Lithium has 4 neutrons

So it would be calcium

Answer:After you have listened to each music selection and filled out the listening chart for each, it’s time to do some comparing and contrasting.

Write a one- to three-paragraph essay that compares and contrasts the two pieces of music that you listened to. If you need some help with what specific things to compare/contrast, refer to the listening charts that you filled out or the questions below:

How do the two musical pieces differ?

How are the two musical pieces similar?

Were the instruments featured in the two pieces different from each other?

What differences or similarities were there in tempo, or speed, of the music?

Were there any differences in what you were imagining as you listened to each piece? Did you hear a story in either piece? What emotions were evoked from listening to each song?

For information on how you will be graded, please refer to the rubric below.After you have listened to each music selection and filled out the listening chart for each, it’s time to do some comparing and contrasting.

Write a one- to three-paragraph essay that compares and contrasts the two pieces of music that you listened to. If you need some help with what specific things to compare/contrast, refer to the listening charts that you filled out or the questions below:

How do the two musical pieces differ?

How are the two musical pieces similar?

Were the instruments featured in the two pieces different from each other?

What differences or similarities were there in tempo, or speed, of the music?

Were there any differences in what you were imagining as you listened to each piece? Did you hear a story in either piece? What emotions were evoked from listening to each song?

For information on how you will be graded, please refer to the rubric below.

Write a one- to three-paragraph essay that compares and contrasts the two pieces of music that you listened to. If you need some help with what specific things to compare/contrast, refer to the listening charts that you filled out or the questions below:

How do the two musical pieces differ?

How are the two musical pieces similar?

Were the instruments featured in the two pieces different from each other?

What differences or similarities were there in tempo, or speed, of the music?

Were there any differences in what you were imagining as you listened to each piece? Did you hear a story in either piece? What emotions were evoked from listening to each song?

For information on how you will be graded, please refer to the rubric below.

Explanation:

Answer

Explanation:

ummmmmmmmmmmmmmmmmmmmm oh i unber stand it now

c is yo answer

Answer:

It has a negative impact on the environment by allowing toxic chemicals to harm wildlife

Mining affects the environment and has a negative impact on it, this type of human activity produces toxic chemicals that harm wildlife.

Mining has a significant impact on the environment, as the development of this activity almost always involves suppression of vegetation, exposure of the soil to erosive processes with changes in the quantity and quality of surface and underground water resources, in addition to causing air pollution.

With this information, we can conclude that Mining affects the environment has a negative impact on the environment, allowing toxic chemicals to harm wildlife.

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Answer:

Explanation:

1: Is symbiosis

2: is eutrophication

3: Predation

4: Trophic efficiency

5: Greenhouse effect

6: Nutrient cycling

Hope this helps!

If you need more help with this kind of subject reach out too me!

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The common name of the Asian wild horse is Przewalski's Horse and his species name is Equus ferus przewalskii

The Przewalski's Horse is a breed of horse that originated in the steppes of central Asia and is the only genuine wild horse breed in the world.

Przewalski's horses used to roam all throughout Europe and Asia. Competition from man and cattle, as well as environmental changes, drove the horse to Asia, where it finally became extinct in the wild. They are now found exclusively at reintroduction sites in Mongolia, China, and Kazakhstan.

Hence, Przewalski's horses are the last remaining wild horses in the world.

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Teratogens are substances or conditions that can cause birth defects in developing fetuses.  Exposure to these teratogens may increase the risk of birth defects and other developmental disorders. There are several teratogens that an individual may be exposed to on an everyday basis. Some of these common teratogens include alcohol, tobacco smoke, caffeine, pesticides, and some prescription and over-the-counter drugs.

It is not possible to avoid all teratogens completely. However, there are certain measures that one can take to reduce the risk of exposure. For example, pregnant women can avoid smoking, alcohol consumption, and exposure to harmful chemicals. They can also eat a healthy diet and get enough rest to ensure a healthy pregnancy.

Expectant fathers should also take precautions to avoid teratogens as they can also have an impact on the health of the developing fetus. For example, exposure to lead and certain chemicals may increase the risk of birth defects and developmental disorders. Therefore, it is important for both parents to take measures to minimize their exposure to teratogens and create a healthy environment for the developing fetus.

In conclusion, exposure to teratogens can have a significant impact on the health of a developing fetus. While it may not be possible to avoid all teratogens, there are steps that can be taken to minimize exposure and ensure a healthy pregnancy. Both expectant mothers and fathers should be aware of the risks associated with teratogens and take steps to reduce their exposure.

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Answer:

unicelluar

Explanation:

I just reasearched

Answer:

the answer is 5 and 3 i had a question like this and i got it right i hope im right

Explanation:

About 100 earthquakes per year are strong enough to cause damage, while most earthquakes are not strong enough to be felt by humans. So, the correct options are (D) and (E).

An earthquake is defined as a sudden release of strain energy in the Earth's crust which results in waves of vibration that radiate outward from the earthquake source. When the stress in the crust exceeds the strength of the rock, it tends to break along lines of weakness, either pre-existing or new fault planes.

Earthquakes occur very frequently as the Earth's tectonic plates are always move and they collide or brush against each other which creates stress that is regularly released in the form of earthquakes. About a million earth tremors occur every year that are undetectable to humans, where they are 2.4 on the Richter and lower in magnitude. Therefore, every year there are about 100 earthquakes above 6.0 Richter magnitude that cause damage.

Thus, about 100 earthquakes per year are strong enough to cause damage, while most earthquakes are not strong enough to be felt by humans. So, the correct options are (D) and (E).

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Survival of the fittest, also known as natural selection, is a process by which organisms that possess traits better adapted to their environment are more likely to survive and reproduce than those with traits that are not as well adapted.

With regards to the five senses, organisms that possess traits which allow them to better perceive their environment (e.g. better sight, hearing, etc.) would be more likely to survive and reproduce than those without such traits. For example, an organism with better vision may be able to detect and avoid predators more effectively than an organism with poor vision.

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The two NotI restriction enzymes cleave DNA on opposite sides of the dbm gene in a species of yeast.

A molecular probe specific for dbm detects a DNA restriction fragment of 8.5 kb in organisms that are wild type at dbm.

However, in a strain of yeast where a ty1 transposable genetic element has mutated dbm, the size of the restriction fragment detected by the probe will be different. This is because the ty1 element is 5.6 kb in length, and its insertion disrupts the sequence of the dbm gene, resulting in a smaller restriction fragment. Therefore, the molecular probe would detect a restriction fragment of a smaller size in the mutated strain compared to the wild type strain.

It appears that your question involves two NotI restriction enzymes, the DBM gene, a molecular probe, and a Ty1 transposable element. Based on the provided information, the wild-type DBM gene is found within an 8.5 kb DNA restriction fragment. However, in a mutated yeast strain, the Ty1 element, which is 5.6 kb in length, has caused a mutation in the DBM gene. This mutation could potentially alter the size of the DNA restriction fragment detected by the molecular probe due to the insertion of the Ty1 element.

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The reason why some people look like their parents while others don't is due to the combination of DNA and proteins that they inherit from their parents. DNA, or deoxyribonucleic acid, is the genetic material that carries the instructions for making proteins, which are the building blocks of the body. Each person inherits one set of DNA from their mother and one set from their father, which determines their physical characteristics.

For example, if a person inherits the same DNA sequence for eye color from both parents, they will have the same eye color as their parents. However, if they inherit different DNA sequences for eye color from each parent, they may have a different eye color than their parents. This is because the combination of DNA and proteins that they inherit determines their physical traits.

In conclusion, the reason why some people look like their parents while others don't is due to the combination of DNA and proteins that they inherit from their parents. These genetic materials determine their physical characteristics, which can be similar or different from their parents.

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Answer:

a car:

Flagellum  is a long thread-like structure that works as a navigator or a steering wheel in a car. The thin filament helps an euglena to move forward in any direction it desires.

Cell membrane is like the doors on a car. They regulate what goes in/out. The cell wall in a plant cell is like the frame on a car. The frame supports the car as the cell wall supports the plant.

The Nucleus is like the front seat of your car because the driver is in control of what the car does, goes, and what happens inside of the car.

Vacuoles is like the Trunk of your car because you store food, water and other wastes into your trunk, like were all the things go in the vacuoles.

The compression stroke in a car engine is like chloroplasts because it gas to fuel a car the same way chloroplasts convert solar energy in to chemical energy for a cell.

Mitochondrion is like the battery on a car. It gives the motor energy so it can run like the mitochondrion produces energy for the cell.

Eyespot is like a radio, because in some cars, radios pull power directly from the battery from the car battery, and this is why you will get the car radios on while the engine is off

Explanation:

The internal structures found in a typical photosynthetic Euglena are as follows:

Pellicle: A thin, flexible membrane that supports the plasma membrane and helps them to change shape

Plasma Membrane: The selectively permeable membrane that protects the inner content of the cell from the outside environment

Cytoplasm: A jelly-like substance distributed throughout the cell that contains all the cell organelles

Chloroplast: Contains the green pigment chlorophyll that helps them to produce food using sunlight by photosynthesis

Nucleus: A membrane-bound organelle that contains the genetic material, DNA. It also contains a distinct nucleolus that contains RNA and helps the cell to synthesize proteins

Mitochondria: The energy-producing organelle that forms ATP. All cellular activities such as movement and reproduction are performed using the mitochondrial energy source

Ribosomes: Consists of RNA and proteins, and are responsible for producing all cellular proteins

Golgi Apparatus: Manufactures, stores, and transports large molecules such as carbohydrates and proteins within the cell

Endoplasmic Reticulum: The extensive network of membranes that helps to package and transport proteins to different organelles. It is of two types: rough endoplasmic reticulum (RER) – containing ribosomes attached to it; and smooth endoplasmic reticulum (SER) – devoid of ribosomes

Lysosomes: Small membrane-bound organelles filled with hydrolytic enzymes that break down large molecules such as carbohydrates, fats, and proteins

Contractile Vacuole: It maintains the water and salt balance within the cell

Reservoir: The inward pocket present near the base of the flagella where contractile vacuole dispels excess water

Flagellum: A long whip-like structure attached externally to the cell body that helps in cell movement. An amoeba contains two flagella, a short one that does not protrude out of the cell, and a long one that helps in swimming

Eyespot: A region that is highly colored and contains red-colored carotenoid pigments that help in the detection of light. It is sometimes called a stigma

Photoreceptor: Also known as the paraflagellar body, it is the light-sensitive region located near the flagellum that helps to detect light. It also helps in their movement towards and away from light stimuli, a process known as phototaxis  

Paramylon: They are stored starch-like carbohydrate granules composed of glucose produced during photosynthesis. Paramylon enables the organism to survive in low-light conditions when photosynthesis is not possible by acting as the food reserve for the cell. When the paramylon is enclosed in a sheath of polysaccharide, it is called the paramylon sheath of pyrenoid.

The flagellum of euglena, can be compared to the wheels of a car, as they are responsible for the movement of both.

Euglena is a genus of single-celled flagellated algae that can occur either as free cells or in colony form.

Euglenophytes have the presence of flagella as their main characteristic. They have two flagella, one longer than the other. The smaller flagellum does not emerge from the cell. The larger one is mainly used for locomotion.

With this information we can conclude that euglena has flagella for locomotion just as cars have wheels for locomotion.

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It is difficult for scientists to know how many species have already been described because of several reasons.

One of the main reasons is the lack of a comprehensive database or registry of all known species. The process of describing a species is a complex one that involves a lot of research and fieldwork, and many species are only described in isolated studies, making it difficult to keep track of them all.

Another reason is the sheer number of species that exist in the world, estimated to be between 8 and 12 million. The process of discovering and describing new species is ongoing, and as scientists continue to explore different regions and habitats, they are likely to discover many more new species.

Furthermore, some species may be difficult to classify due to their morphological or genetic variations, leading to disagreements among scientists on whether they constitute separate species or not. This can also lead to duplicate descriptions of the same species, further complicating the process of keeping track of all known species.

In conclusion, the vast number of species that exist, the ongoing discovery of new species, and the complexities of classification and description make it difficult for scientists to know exactly how many species have already been described. However, efforts are being made to create more comprehensive databases and registries to aid in the management of this information.

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The parents of the dihybrid in this case is The white flowers (a) are recessive to purple flowers (A), and the yellow seeds (b) are recessive to green seeds (B).

A dihybrid cross is a cross between two organisms that are identical hybrids for two characteristics in a breeding experiment. A dihybrid cross, then, is a union of two organisms that are heterozygous for two separate features. The people that exhibit this sort of characteristic are homozygous for that trait. Genes, which are pieces of DNA, control these qualities.

The two loci governing seed colour (b and B) and flower colour (a and A) are not linked, which means they are on separate chromosomes or are distant from one another on the same chromosome, if half of the progeny resulting from a testcross between a dihybrid (green-seeded, purple-flowered) and a tester (yellow-seeded, white-flowered) have yellow seeds.

The yellow seeds (b) are recessive to green seeds (B), whereas the white blossoms (a) are recessive to purple blooms (A).

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You have just witnessed a car accident. Your heart rate and respiration rate are likely to be elevated due to sympathetic nervous system activity.

The nervous system is an extensive organ network that connects various body parts and systems to coordinate and control the body's functions. It is the master controlling and communication system in the body, comprising the brain, spinal cord, and peripheral nerves. The nervous system consists of two major divisions: the central nervous system (CNS) and the peripheral nervous system (PNS).

The nervous system controls the body's functions through electrical signals, the nervous impulses that travel along nerve cells called neurons. The nervous system detects changes inside and outside the body and initiates responses to maintain homeostasis. It has two main types of nerve cells: the sensory neurons that detect stimuli and carry signals from receptors to the CNS, and the motor neurons that carry signals from the CNS to the muscles and glands.

The nervous system regulates heart rate and respiration rate to meet the body's demand for oxygen and nutrients. Sympathetic and parasympathetic divisions of the autonomic nervous system (ANS) control heart rate and respiration rate. The sympathetic division is responsible for increasing heart rate and respiration rate during stress or exercise, while the parasympathetic division decreases heart rate and respiration rate during rest or relaxation.

When you witness a car accident, your nervous system's sympathetic division is activated, leading to the release of adrenaline and noradrenaline hormones that prepare your body to respond to the perceived threat. These hormones cause your heart rate and respiration rate to increase, increasing oxygen and nutrients delivery to your tissues and muscles and preparing them to fight or flee. The activation of the sympathetic nervous system during stress is an adaptive response that helps you cope with the perceived danger.

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Answer: i got your back

Astronomy (from Greek: ἀστρονομία, literally meaning the science that studies the laws of the stars) is a natural science that studies celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, and comets. Relevant phenomena include supernova explosions, gamma ray bursts, quasars, blazars, pulsars, and cosmic microwave background radiation. More generally, astronomy studies everything that originates beyond Earth's atmosphere. Cosmology is a branch of astronomy that studies the universe as a whole.[1]

Astronomy is one of the oldest natural sciences. The early civilizations in recorded history made methodical observations of the night sky. These include the Babylonians, Greeks, Indians, Egyptians, Chinese, Maya, and many ancient indigenous peoples of the Americas. In the past, astronomy included disciplines as diverse as astrometry, celestial navigation, observational astronomy, and the making of calendars. Nowadays, professional astronomy is often said to be the same as astrophysics.[2]

Professional astronomy is split into observational and theoretical branches. Observational astronomy is focused on acquiring data from observations of astronomical objects. This data is then analyzed using basic principles of physics. Theoretical astronomy is oriented toward the development of computer or analytical models to describe astronomical objects and phenomena. These two fields complement each other. Theoretical astronomy seeks to explain observational results and observations are used to confirm theoretical results.

Astronomy is one of the few sciences in which amateurs play an active role. This is especially true for the discovery and observation of transient events. Amateur astronomers have helped with many important discoveries, such as finding new comets.

Explanation:

Answer:

Fungi are closer genetically to animals than to plants, say researchers who have compared sequences of ribosomal RNA. Their work refines the genetic ‘tree of life’ pioneered by Carl Woese of the University of Illinois.

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Explanation:

By evaluating the structural features and ascertain the origin and evolutionary history of the horns in order to decide whether the horns in two different insect families are a homology or analogy.

Homology describes a structural similarity between two or more species that is attributable to a shared ancestor. If the horns in the two insect groups are homologous, they will have a common ancestral structure and have similar structural and developmental origins.

An analogy is a structural similarity between two or more species that isn't attributable to convergent evolution but rather to a shared ancestor. In other words, despite similar environmental stresses, the structures developed separately.

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1.88 nano coulombs of charge enter a 2.1 cm length of the axon during this process.

From the given statement, it can be stated that during the inflow part of this cycle, approximately 5.6 × 10¹¹ Na (sodium ions) per meter, each with charge e, enter the axon. To find the amount of charge entering a 2.1 cm length of the axon, we need to convert the length into meters.

1 cm = 10^-2m

2.1cm = 2.1 × 10^-2m

Now, charge on each ion = e = 1.6 × 10^-19C

The total number of ions that enter the 2.1 cm length of the axon

= 5.6 × 10¹¹ ions/m × 2.1 × 10^-2 m= 1.176 × 10^10 ions

The total charge that enters the axon = Total number of ions × charge on each ion

= 1.176 × 10^10 ions × 1.6 × 10^-19C/ion

= 1.8816 × 10^-9C ≈ 1.88 n C

= 1.88 × 10^3 n C (in nanocoulombs

Therefore, 1.88 nano coulombs of charge enter a 2.1 cm length of the axon during this process.

Part A: We are given the charges of two equal point charges and we are to calculate the magnitude of force each charge exerts on the other and whether the force is attractive or repulsive. The magnitude of the force between two point charges q1 and q2 separated by a distance r is given by Coulomb's law:

F = k(q1 q2 /r²),

where k = 9 × 10^9 Nm²/C² is Coulomb's constant.

Given that two charges are equal and have a value of +3.20 × 10^-4 C.

The distance between the charges is given as 0.185 in, which is equal to 0.004699 m (since 1 inch = 0.0254 m).

Plugging these values in the formula, we get:

F = kq1 q2 /r²

F = (9 × 10^9 Nm²/C²) × (+3.20 × 10^-4 C) ² / (0.004699 m) ²

F = 2.28 × 10^-2 N

The magnitude of the force exerted by each charge on the other is 2.28 × 10^-2 N.

Part B: The charges are both positive and of the same sign, therefore the force between them is repulsive.

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