define cholesterol in your own words

First one is chlorophyll, second one is mitochondria.

Answer:

1) Animals Sources: Dairy Products- Meat, butter, ghee meat, fish, pork, and eggs, 2) Vegetable Sources: Cooking oil, sun flower oil, mustard oil, ground nut oil, fats from other vegetable sources.

Explanation:

Answer:

Proper circulation is key for maintaining optimal health. It ensures that blood and oxygen continuously flow throughout the body, allowing every organ to function properly. It helps to heal wounds faster, it keeps your brain sharp, it keeps your heart healthy, and it even gives your complexion a natural flush.

Explanation:

would you mind to brainliest my answer?

Over the past four decades, researchers have identified many types of oncogenes, including growth factor receptors, transcription factors, and intracellular signaling proteins.

These are specific genes in an organism that can cause the formation of cancer. These genes are prone to defects that when activate, signal for a cell to become a tumor. The genes listed in the question are some examples of the types of cells that can be oncogenes.

Therefore, we can confirm that over the past four decades, researchers have identified many types of oncogenes, including growth factor receptors, transcription factors, and intracellular signaling proteins.

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Explanation:

risky behavior and abuse

When two heterozygous plants are crossed, then the offspring will be of two different phenotypes, such as green and albino. Out of the four individuals, three will be green and one will be albino. The phenotypic ratio is 3:1.

A monohybrid cross involves a single character or trait. Example: the colour of a pea plant. In the pea plant, green is dominant over albino. Green colour is represented by G. Albino colour is represented by g.

The homozygous green plant is represented by GG. The heterozygous green plant is represented by Gg . The homozygous albino plant is represented by gg .

When two heterozygous plants (Gg) are crossed, each parent will produce two types of gametes, such as G and g. There will be offspring of the GG, Gg and gg type. Both homozygous (GG) and heterozygous (Gg) plants will be green. The punnett square is explained below 

Hence, there will be two different phenotypes, such as green and albino, from the cross of two heterozygous individuals. The phenotypic ratio is 3:1.

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Photosynthesis in chloroplasts involves major steps such as light absorption, electron transport, ATP synthesis, and carbon fixation. It begins with light-dependent reactions in photosystems I and II, followed by electron transport and ATP synthesis.

Step 1: Photosynthesis is a complex process that occurs in the chloroplasts of plants, involving several major steps such as light absorption, electron transport, ATP synthesis, and carbon fixation.

Step 2:Photosynthesis is the process by which plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose. It occurs in the chloroplasts, specifically in three main stages: light-dependent reactions, electron transport chain, and the Calvin cycle.

During the light-dependent reactions, light energy is absorbed by chlorophyll molecules in photosystem II (PSII) and photosystem I (PSI). In PSII, water molecules are split, releasing electrons, protons (H+ ions), and oxygen. The electrons move through an electron transport chain, creating a proton gradient across the thylakoid membrane. This gradient is essential for ATP synthesis by ATP synthase, using the energy from the electron flow.

In PSI, electrons are re-energized by absorbing more light energy and are ultimately used to produce NADPH, another energy carrier. The ATP and NADPH generated in the light-dependent reactions are then used in the Calvin cycle.

The Calvin cycle, also known as the light-independent reactions or carbon fixation, occurs in the stroma of the chloroplast. It uses ATP, NADPH, and carbon dioxide (CO2) to produce glucose (G3P), which serves as a building block for sugars and other organic compounds. The cycle regenerates the starting molecule, ribulose bisphosphate (RuBP), allowing the process to continue.

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Answer:

option c

Explanation:

Hope it helps :)

Many buttons contain two sizes of vesicles, with the larger ones typically containing neurotransmitters.

Buttons, also known as synaptic boutons, are specialized structures at the ends of neuronal axons. They are responsible for transmitting signals between neurons through chemical signals called neurotransmitters. Within the buttons, some vesicles store and release these neurotransmitters. The vesicles found in buttons come in different sizes. While there can be variations, it is common to find two distinct sizes of vesicles within buttons. The more giant vesicles are typically responsible for storing and releasing neurotransmitters. These neurotransmitters are essential for transmitting signals across the synapse, the junction between two neurons, allowing communication between them. The smaller vesicles, on the other hand, often play a role in recycling and replenishing the supply of neurotransmitters within the button. They are involved in refilling the more giant vesicles with neurotransmitters, ensuring a continuous supply for future signaling. Understanding the composition and functioning of vesicles within buttons is crucial for unraveling the complex mechanisms of neuronal communication and synaptic transmission in the nervous system.

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Answer:

O Fibrous root system

Explanation:

I got it correct

Artificial blood is used to substitute natural oxygen transporters. Disadvantages are toxicity, vasoconstriction, infection, pathogen affections, among others.

When talking about artificial blood, we are referring to an oxygen transporter.

Many of the blood substitutes are still being developed and studied, but basically, artificial blood accomplishes the hemoglobin functions by taking oxygen to different tissues.

Among the blood substitutes, we can find

→ Erythrocyte substitutes,

→ Platelet substitutes,

→ Plasma substitutes

So disadvantages are toxicity, vasoconstriction, infection, pathogen affections.

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Answer:

artificial blood is less efficient at carrying oxygen through the blood

increased risk of high blood pressure

three times greater risk of heart attacks

removed from the body quickly by the kidneys

Explanation: this is the answer on edge all u need to do is copy n paste!! Hope this helps ;)

The statement is false as it should read "There is an unbroken line, going from you, to your ancestors, back millions of years to the first life to exist on Earth." The correct option is C.

An ancestor is anybody from whom individuals descended. To descend implies to come from in a family.

Individuals are descended from their parents, who are descended from their parents, and so on. The ancestors are the lineage of the parents and children.

There exists an uninterrupted line that runs from you to your forefathers, back many millions of years to the first life on Earth.

Thus, the correct option is C.

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Answer:

The correct answer would be C, midsagittal plane

Explanation:

The midsagittal runs through the middle of an object and is even on both sides. I hope this helps:)

Answer:

yes

Explanation:

Answer:

50%

Explanation:

One half of the punnet square would be Tt and the other half would be tt.

Fight-or-flight response refers to an organism's response when faced with an acute threat to survival. It is marked with physical changes that include nervous and endocrine changes preparing the organism to react or to retreat.

For example, when a snake faces a predator or a threat, its responses could be crawling away or acting as if it is ready to attack as its defensive displays. It could be through hooding, hissing, and raising the upper portion of their bodies to stand erect.

Pollution - Such as littering or adding trash to the place

Feeding wild animals or killing living things there like poaching or trampling plants

Answer: Humans could trample on plants, or accidentally bring in other types of plants on their clothes. humans can light fires in non-designated areas.

Explanation:

Answer: Mendel and genetics

Explanation:

Meta-analysis is the name for the quantitative analysis of a large collection of scientific results that attempts to make sense of a diverse selection of data.

Meta-analysis:

A meta-analysis is a statistical study that incorporates the findings of several scientific investigations. When there are several scientific studies addressing the same subject, meta-analyses can be undertaken, with each individual study presenting measures that are predicted to have some degree of inaccuracy. The goal is then to utilise statistical methodologies to produce a pooled estimate that is closest to the unknown common reality based on how this inaccuracy is viewed. The evidence-based medical literature regards meta-analytic results as the most reliable source of evidence.

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It would be unethical to expose research participants to the high doses of multiple steroids reportedly used by athletes.

What are steroids?

A steroid is an organic molecule having four rings organized in a certain chemical configuration that is physiologically active. The two main biological roles of steroids are as signaling molecules and as critical elements of cell membranes that affect membrane fluidity. Steroids lessen redness and swelling when taken in doses greater than those your body naturally produces (inflammation). Asthma and eczema are two inflammatory diseases that may benefit from this. Additionally, steroids lower the immune system's functioning, the body's natural defense against disease and infection. Along with increasing muscle size, anabolic steroids may lessen the amount of muscle damage caused by strenuous exercise, allowing athletes to recover from their workouts faster and train harder and more frequently.

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Answer:

C Osmosis

Explanation:

It is 100% right so yep

Answer:

diffusion but I'm not 100% sry

In the lac operon, glucose also plays an important role along with lactose. When Lactose is present in the environment along with glucose then it cannot deactivate the regulator gene [repressor], as a result, the repressor will bind to the operator and the transcription will be blocked.

When Lactose is present in the environment without glucose then the Catabolite repressor protein will bind to the CAP Site, and lactose will bind to the repressor [regulatory gene product], as a result, the repressor gets deactivated and the transcription takes place.

Lac operon: It is a set of three structural genes z, y, and a which are all transcribed and regulated under one single promoter. The three genes code for β-galactosidase, lactose permease, and transacetylase respectively.

β-galactosidase is responsible for breaking the lactose into glucose and galactose, lactose permease is responsible for transporting lactose across the cell membrane and transacetylase attaches a particular chemical group to target molecules.

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The test (independent) variable in this experiment is the color of the water. An independent variable is a variable that can be manipulated or vary in an experimental study to explore its effects. The independent variable is the cause.

Independent variables are the variable which the experimenter changes to test their dependent variable. A switch in the independent variable directly causes a change in the dependent variable. The result on the dependent variable is studied and noted.

There are two main types of independent variables; Experimental independent variables and Subject variables.

The independent variable is the component that can be changed in an experiment.

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Growing tree roots physically break apart rock are the tree agents of mechanical weathering. So, the correct option is (A).

Mechanical weathering is also called physical weathering in which a large rock breaks down into smaller pieces of rocks. When rocks decompose or break down without experiencing any change in their chemical composition, it is known as mechanical weathering.

There are 3 Mechanical Weathering Processes which break down rocks

The roots of a plant grow into a crack in a rock. When these roots grow, they open the crack. Burrowing animals can also cause weathering. The animal may break the rock to dig for food or make a hole to live in.

Thus, growing tree roots physically break apart rock are the tree agents of mechanical weathering. So, the correct option is (A).

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Answer: dna replication

Explanation:

Answer:

Hmmm, it seems like it should be B

Explanation:

Because the DNA have crossed over with each other... I could be wrong though... and I don’t mean to throw shade at the other person that answered...

Answer:

pa brainly need tlga point thanks

Answer:

1) Gain knowledge about the soil condition and how to improve it

2) Minimise fertiliser expenditures

3) Avoid over-fertilisation

Explanation:

Hope this helps

The human DNA analyze is usually conclusive evidence about a crime, since each individual has their unique genetic code. Fritz results were inconclusive, therefore the sample did not showed a result corresponding to the one on the crime scene. In this case Fritz is not guilty of shoplifting.

Electrophoresis is a technique commonly used in the lab to separate charged molecules, like DNA, according to size.

Gel electrophoresis is a technique commonly used in laboratories to separate charged molecules like DNA?, RNA? and proteins? according to their size.

Charged molecules move through a gel when an electric current is passed across it.

An electric current is applied across the gel so that one end of the gel has a positive charge and the other end has a negative charge.

The movement of charged molecules is called migration. Molecules migrate towards the opposite charge. A molecule with a negative charge will therefore be pulled towards the positive end (opposites attract!).

The gel consists of a permeable matrix, a bit like a sieve, through which molecules can travel when an electric current is passed across it.

Smaller molecules migrate through the gel more quickly and therefore travel further than larger fragments that migrate more slowly and therefore will travel a shorter distance. As a result the molecules are separated by size.

Gel electrophoresis and DNA

Electrophoresis enables you to distinguish DNA fragments of different lengths.

DNA is negatively charged, therefore, when an electric current is applied to the gel, DNA will migrate towards the positively charged electrode.

Shorter strands of DNA move more quickly through the gel than longer strands resulting in the fragments being arranged in order of size.

The use of dyes, fluorescent? tags or radioactive? labels enables the DNA on the gel to be seen after they have been separated. They will appear as bands on the gel.

A DNA marker with fragments of known lengths is usually run through the gel at the same time as the samples.

By comparing the bands of the DNA samples with those from the DNA marker, you can work out the approximate length of the DNA fragments in the samples.

How is gel electrophoresis carried out?

Preparing the gel

Agarose gels? are typically used to visualise fragments of DNA. The concentration of agarose used to make the gel depends on the size of the DNA fragments you are working with.

The higher the agarose concentration, the denser the matrix and vice versa. Smaller fragments of DNA are separated on higher concentrations of agarose whilst larger molecules require a lower concentration of agarose.

To make a gel, agarose powder is mixed with an electrophoresis buffer and heated to a high temperature until all of the agarose powder has melted.

The molten gel is then poured into a gel casting tray and a “comb” is placed at one end to make wells for the sample to be pipetted into.

Once the gel has cooled and solidified (it will now be opaque rather than clear) the comb is removed.

Many people now use pre-made gels.

The gel is then placed into an electrophoresis tank and electrophoresis buffer is poured into the tank until the surface of the gel is covered. The buffer conducts the electric current. The type of buffer used depends on the approximate size of the DNA fragments in the sample.

Preparing the DNA for electrophoresis

A dye is added to the sample of DNA prior to electrophoresis to increase the viscosity of the sample which will prevent it from floating out of the wells and so that the migration of the sample through the gel can be seen.

A DNA marker (also known as a size standard or a DNA ladder) is loaded into the first well of the gel. The fragments in the marker are of a known length so can be used to help approximate the size of the fragments in the samples.

The prepared DNA samples are then pipetted into the remaining wells of the gel.

When this is done the lid is placed on the electrophoresis tank making sure that the orientation of the gel and positive and negative electrodes is correct (we want the DNA to migrate across the gel to the positive end).

Separating the fragments

The electrical current is then turned on so that the negatively charged DNA moves through the gel towards the positive side of the gel.

Shorter lengths of DNA move faster than longer lengths so move further in the time the current is run.

The distance the DNA has migrated in the gel can be judged visually by monitoring the migration of the loading buffer dye.

The electrical current is left on long enough to ensure that the DNA fragments move far enough across the gel to separate them, but not so long that they run off the end of the gel.

Illustration of DNA electrophoresis equipment used to separate DNA fragments by size. A gel sits within a tank of buffer. The DNA samples are placed in wells at one end of the gel and an electrical current passed across the gel. The negatively-charged DNA moves towards the postive electrode. Image credit: Genome Research Limited

tank.

Answer:

The best time to see the Great Migration is during the dry season, between July and early October. It's warm, weather is stable, and animals are abundant. The sparse vegetation and dried-up waterways force the animals to head up north to find food and drink.

Explanation:

Explanation:

A scientist can use this experiment to determine the amount of solute in any potato.

hypotonic solution is a relative term. it means when we compare two solutions one of them is considered to be a hypotonic if it's solute concentration is less than the other.

so if the solution has less solute concentration its hypotonic solution and if it has more amount of solute its hypotonic solution. if both solutions have same amount of solute then it will be considered as a isotonic solution. when we separate two solution hypertonic and hypotonic by a semipermeable membrane there occurs diffusion of water molecules from its higher concentration to its lower concentration that is from hypotonic solution to hypertonic solution.

this movement of water molecules is called osmosis. this occurs in order to obtain an dynamic equilibrium between the 2 solutions.

here we take start as solute and water as solvent.

thus when a scientist and potato in a hypotonic solution the water moves inside the potato cavity. the more the transfer of water molecules in the potato cavity the more in the sugar quantity present in the potato. this is because the water will try to obtain a dynamic equilibrium between the two solutions if the sugar quantity in the potato cavity is high then the water molecules needed to dilute that solution will also be high.

in in this way a scientist can determine the amount of salt present in the potato.