What material is the objective lens made of in UV fluorescence microscopy

Answers

Answer 1

Answer:

quartz

Explanation:


Related Questions

The horizontal line at zero represents a baseline average temperature. From what years is this
baseline temperature calculated?

Answers

The years used to calculate the baseline average temperature can vary depending on the specific dataset being analyzed. However, the most commonly used baseline period for global temperature anomalies in the period from 1951-1980.

This baseline period was established by the National Aeronautics and Space Administration (NASA) and the National Oceanic and Atmospheric Administration (NOAA). It is used as a reference to compare current and future temperature anomalies to historical averages. Temperature can vary from year to year. Hence, the baseline temperature is calculated from 1951-1980.

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A human and a bat share a common ancestor. According to the article, which evidence supports this relationship?

Their teeth have the same structure and function.
Their arm bones have the same structure and function.
Their teeth have the same structure, but not function.
Their arm bones have the same structure, but not function.A human and a bat share a common ancestor. According to the article, which evidence supports this relationship?

Their teeth have the same structure and function.
Their arm bones have the same structure and function.
Their teeth have the same structure, but not function.
Their arm bones have the same structure, but not function.

Answers

Answer:

Explanation:

According to the article, the evidence that supports the relationship between humans and bats sharing a common ancestor is that their arm bones have the same structure and function. Specifically, the article mentions that the bones in the wings of bats are homologous to the bones in the arms of humans and other mammals. This indicates that the wings of bats evolved from the arms of a common ancestor shared with humans and other mammals. The article does not mention anything about the teeth of humans and bats having the same structure or function. Therefore, the correct answer is:

Their arm bones have the same structure and function.

Answer: D

Explanation:

A biology teacher asks students to give examples of genetic variations that support the idea that changes in a population’s environment affect genetic variation. Which is the least supportive example?





Answers

Answer:

mutation

random mating between organisms

random fertilization

crossing over (or recombination) between chromatids of homologous chromosomes during meiosis

Answer:

The changes in peppered moths

Explanation:

What abiotic factor of coastal aquatic ecosystems most limits the productivity of a fishery?

1) Water temperature
2) Water pH
3) Nutrient (nitrate + phosphate) availability
4) Dissolved oxygen levels
5) Salinity

Answers

The abiotic water pH factor in coastal aquatic habitats is what most inhibits a fishery's productivity.

What are the primary constraints on aquatic ecosystems?

The majority of aquatic species do not have to contend with extremes in wetness or temperature. Instead, the amount of sunlight available to them and the water's concentration of dissolved oxygen and nutrients are their primary limiting variables.

What elements restrict an ecosystem's capacity for production?

Ecosystem-specific differences in net primary production exist. They include the amount of solar energy intake, the temperature and humidity, the amount of carbon dioxide, the availability of nutrients, and community interactions.

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Stars are burning balls of extremely hot gasses that form when nuclear fusion occurs.

Apparent (how bright they appear ___)

Answers

Apparent brightness refers to how bright a star appears to an observer on Earth. It is determined by two factors: intrinsic brightness and distance.

Intrinsic brightness, also known as absolute brightness or luminosity, is a measure of the total amount of light energy a star emits. It depends on the star's size, temperature, and stage of evolution. Intrinsic brightness is typically expressed in terms of the star's luminosity, which is the amount of energy radiated per unit of time.

Distance plays a crucial role in determining the apparent brightness of a star. The further away a star is from Earth, the more its light spreads out over a larger area, resulting in a decrease in apparent brightness. This relationship follows the inverse square law, which states that the apparent brightness of an object is inversely proportional to the square of its distance from the observer.

While stars are indeed burning balls of extremely hot gases that form through nuclear fusion, their apparent brightness can vary depending on their intrinsic brightness and distance from Earth. A star with high intrinsic brightness may appear faint if it is located at a significant distance, while a less intrinsically bright star that is closer to Earth may appear brighter in the night sky.

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I don’t wanna go to school

Answers

Answer:

Sorry about that

Explanation:

what usually accompanies a cold spell in minnesota?

Answers

Polar jet steams moving south!!!!

An illness of symptoms or deficits that affect voluntary motor or sensory functions, which
suggest another medical condition but that is judged to be caused by psychological factors
because the illness is preceded by conflicts or other stressors in known as which of the
following?
A.
Factitious disorder
B.
Illness anxiety disorder
C.
Somatic symptom disorder
D.
Functional neurological symptom
disorder

Answers

An illness of symptoms or deficits that affect voluntary motor or sensory functions, which suggest another medical condition but that is judged to be caused by psychological factors because the illness is preceded by conflicts or other stressors is known as Functional Neurological Symptom Disorder.

Thhe correct answer is D.

What is Functional Neurological Symptom Disorder?

A Functional Neurological Symptom Disorder, also known as Conversion Disorder. This disorder involves the presence of neurological symptoms or deficits such as weakness, tremors, or sensory loss that cannot be fully explained by medical or neurological conditions. The symptoms are instead thought to be caused by psychological factors, such as stress, trauma, or conflicts.

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A bacterium called Salmonella can cause
food poisoning.which kingdom is it in?​

Answers

Answer:

monera kingdom

Explanation:

Answer:

The kingdom is Monera Kingdom

Explanation:

Which of the following accurately describes a trade-off of using biomass as a fuel?A.Biomass is inexpensive but nonrenewable.B.Biomass is easy to produce but generates radioactive waste.C.Biomass is renewable but produces air pollution.D.Biomass produces no air or water pollution but is expensive to collect.

Answers

The correct answer is the letter C. Biomass is renewable but produces air pollution.

The term biomass refers to organic matter that comes from plants and animals and it is a renewable energy source; however, it has an adverse effect on the environment as it will contribute to air pollution.

Why are free radicals a problem?

Answers

Answer:

Free radicals are unstable atoms that can damage cells, causing illness and aging. Free radicals are linked to aging and a host of diseases, but little is known about their role in human health, or how to prevent them from making people sick.

Explanation:

Answer:

free radicals are unstable atoms uwu

3. What evidence was provided for localized functions inherent to specific anatomical brain structures during execution of behavior and mental processes?

Answers

Evidence from studies of brain lesions and neuroimaging techniques supports the concept of localized functions in specific brain structures during the execution of behavior and mental processes.

There is substantial evidence supporting the localized functions of specific anatomical brain structures during the execution of behavior and mental processes. One such piece of evidence is the study of patients with brain lesions. By observing the behavioral and cognitive deficits resulting from damage to specific brain regions, researchers have been able to identify the functions associated with those areas. For example, damage to the prefrontal cortex can lead to impaired decision-making and planning abilities. Additionally, neuroimaging techniques, such as functional magnetic resonance imaging (fMRI), have provided evidence for localized functions. These techniques allow researchers to observe changes in brain activity during specific tasks, providing insight into the regions involved in those tasks.

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TRUE or FALSE: As time passes, the universe is
becoming more disorderly.

Answers

Answer:

true

Explanation:

what is the meaning of involuntary action​

Answers

Involuntary actions is when something happens unintentionally or without a person's conscious control, it is said to be occurring involuntarily

What is Involuntary actions?

When something happens unintentionally or without a person's conscious control, it is said to be occurring involuntarily. Usually, the autonomic nervous system or reflexive reactions control these actions.

In contrast to voluntary acts, which may be controlled consciously, involuntary actions occur without conscious thought or intentional decision-making.

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Write a scientific argument that addresses the question: During a year, will there be a lunar eclipse of the moon of Kepler-47c?

Answers

Answer:

The moonlight we see on Earth is sunlight reflected off the Moon's grayish-white surface. The amount of Moon we see changes over the month — lunar phases — because the Moon orbits Earth and Earth orbits the Sun. Everything is moving. During a lunar eclipse, Earth comes between the Sun and the Moon, blocking the sunlight falling on the Moon. Earth's shadow covers all or part of the lunar surface.

Explanation:

Hope this helps! :)

A year, will there be a lunar eclipse of the moon of Kepler-47c are the to occur once a year.

What is moon?

The term moon relates to the spherical shape of the satellite's identity. The moon was supposed to shine in the night. It is roughly one-quarter the size of Earth. The Moon is the fifth-biggest satellite in the Solar System, bigger than any of the known planetary systems and the largest spacecraft relative to its parent planet.

Sunlight reflecting off the Moon's grayish-white surface causes the moonlight we see on Earth. So because the moon passes Earth and the Earth orbits the Sun, the amount of Moonlight we see varies over the lunar phases of the month. Everything is in motion.

During a total eclipse, Earth passes here between the Moon and the Sun obstructing sunlight from reaching the Moon. The shadow of the Earth covers all or parts of the surface of the moon.

As a result, the lunar eclipse of the moon of Kepler-47c are the to occur once a year.

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Spinal cord is blank to the esophagus

Answers

Answer:

posterior

Explanation:

Where is eukaryotes located

Answers

Answer:

Eukaryotes are found in plants, animals, fungi, and protists

How may ecological succession affect a population of red foxes compared to evolution.

Answers

Ecological succession and evolution are both processes that affect the population of red foxes in different ways. Ecological succession involves the gradual and predictable changes that occur in a community of organisms over time while evolution refers to the changes in the genetic makeup of a population over time.

Ecological succession involves the gradual and predictable changes that occur in a community of organisms over time. It is driven by both biotic and abiotic factors and is classified into two main types: primary and secondary succession. During primary succession, organisms colonize a newly formed area that lacks soil and organic matter.

Over time, these pioneer organisms create soil and organic matter, which allows for the growth of more complex plants and animals. Secondary succession occurs after a disturbance such as a fire or flood has occurred, and it involves the gradual return of a community to its original state. Ecological succession can affect the population of red foxes in several ways.

For example, as vegetation grows and changes, the availability of food and shelter for red foxes can also change. This can either increase or decrease the population of red foxes depending on the availability of food and other resources. Furthermore, as other animal populations change due to succession, this can also impact the population of red foxes through predation or competition.

Evolution, on the other hand, refers to the changes in the genetic makeup of a population over time. This occurs as a result of several mechanisms, including natural selection, genetic drift, and gene flow. Over time, these changes can lead to the formation of new species and the extinction of others.

Evolution can affect the population of red foxes in several ways. For example, if a population of red foxes undergoes genetic changes that allow them to better adapt to their environment, this can increase their survival and reproduction. Conversely, if changes in the environment reduce the survival and reproduction of red foxes, this can decrease their population.

Overall, ecological succession and evolution can both affect the population of red foxes, but in different ways. Ecological succession involves changes in the availability of food and other resources, while evolution involves changes in the genetic makeup of a population over time.

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Which plant part absorbs light energy to produce plant sugar?

Stem


leaves


roots


flower

Answers

Answer:

The leaves absorbs light light energy to produce plant sugar.

Answer:

Ans: Option C (Leaves).

Explanation:

The plant's leaf converts the light energy into chemical energy through the process known as Photosynthesis.

Match each hormone to its description:
A) Angiotensin II
B) Aldosterone
C) Natriuretic peptides
D) Antidiuretic hormone

Answers

(A) A powerful vasoconstrictor that increases blood pressure is angiotensin II. It needs angiotensin-converting enzyme to be produced (ACE). ACE inhibitors are medications that lower angiotensin II levels and blood pressure by blocking the action of this enzyme, a common treatment for hypertension.

(B) Aldosterone, sometimes known as the "salt-retaining hormone," largely encourages the kidneys to retain Na+. (Na+ retention encourages water retention, which supports blood pressure since water follows sodium osmotically.

(C) Natriuretic peptides, which are aldosterone-opposing hormones released by the heart. They decrease blood volume and pressure by enhancing the kidneys' ability to excrete Na+. They also assist reduce blood pressure by having a broad vasodilator effect.

(D) Antidiuretic hormone (ADH): Although ADH primarily encourages water retention, it also acts as a vasoconstrictor when present in pathologically high amounts.

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Secondary sex characteristics are traits that
O occur later in development
O are not visible
occur for only some people
O are not directly related to fertility

Answers

Answer:

Occur later in development

Insulin and glucagon have opposite effects on human metabolic processes.

a. True
b. False

Answers

Answer:

The correct answer is a. The statement is true.

Explanation:

Insulin and glucagon are two hormones produced by the pancreas, which are essential for life and have an inverse function to each other. Insulin is a hormone of protein origin that has various effects on the transport of metabolites. Glucagon is a complementary hormone in regulating the concentration of glucose in the blood. When glucose levels increase, there is an inhibition in glucagon secretion and an increase in insulin secretion, while when glucose levels decrease, glucagon secretion increases and insulin secretion decreases respectively.

A neighbor administers first aid to a boy who was found in his backyard pool and is not breathing. The neighbor should apply a tourniquet. attempt rescue breathing. perform the Heimlich maneuver. apply a splint

Answers

Answer:

attempt rescue breathing

Explanation:

If all the grass disappeared from this community, which change would be
most likely to occur?
squirrel
coyote cougar
mouse deer
XIA
acorns
grass
mushrooms
OA. The squirrel population would decrease.
OB. The coyote population would increase.
OC. The cougar population would stay the same.
OD. The deer population would decrease.

Answers

Answer:

If all the grass disappeared from a community, the most likely change to occur would be that the deer population would decrease. This is represented by option D. Deer are herbivores and rely on grass and other vegetation as a primary food source. Without grass, the deer would have less food available, which could lead to a decrease in their population. This could also have a cascading effect on other species in the community, such as predators that rely on deer as a food source.

Explanation:

Two _____________ chromosomes make up each pair and contain genes for similar characteristics.

Answers

The answer is homologous:))

10. (04.03 HC)
Which substances are needed for cellular respiration?
Use complete sentences to explain how the mass of hydrogen is conserved during cellular respiration. (10 points)

Answers

Chemical reactions that simulate cellular respiration follow the Law of Conservation of Matter when they are balanced. Six carbon atoms, 12 hydrogen atoms, and 18 oxygen atoms are the same number of atoms as the reactants.   C₆H₁₂0₆+60₂ — 6C0₂+6H₂0 .

What is cellular respiration?

Through the process of cellular respiration, organisms mix oxygen with food molecules, directing the chemical energy contained in these substances toward life-sustaining processes while excreting carbon dioxide and water as waste. Foods are broken down by organisms that do not require oxygen in a process known as fermentation.

What are atoms?

A chemical element is uniquely defined by its atoms, which are small units of a substance. An atom is made up of a core nucleus and one or more negatively charged electrons that orbit it. The positively charged, comparatively hefty protons and neutrons that make up the nucleus may be present. The fundamental building components of matter are atoms. Atoms make up anything that has mass and occupies space.

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How does the Phosphorus Cycle differ from the other biogeochemical cycles?
A. Phosphorus is not found as a mineral, only in organic form.
B. Phosphorus only cycles through the environment, not through organisms.
C. Phosphorus doesn’t enter the water.
D. Phosphorus doesn’t enter the atmosphere directly.

Answers

The phosphorus Cycle differ from the other biogeochemical cycles in the sense that phosphorus doesn’t enter the atmosphere directly. Option D

What is the biogeochemical cycles?

The biogeochemical cycles refer to the movement of elements and other essential materials in nature. We know that these materials are required by living things for the smooth functioning of the systems in the body hence these cycles are very vital.

The phosphorus Cycle differ from the other biogeochemical cycles in the sense that phosphorus doesn’t enter the atmosphere directly.

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Southern Florida received the majority of its annual precipitation between mid may andOctober because of this precipitation pattern freshwater systems are very productive duringthese months. Which of the following best describes a change that would be observed whenthe seasons change from the wet season to the dry season?A. there would be a reduction in habitat usage by large predator populations.B. there would be a reduction in space and food sources for aquatic populations.C. the aquatic plants would increase in size as they gain greater amounts of nutrients.D. the nutrients would disappear from the ecosystem and be lost as heat when theydecompose.

Answers

The statement that best describes a change that would be observed when the wet season changes to the dry season is that there would be a reduction in space and food sources for aquatic populations, as it is likely that watercorps reduce theor size.

Correct option: B.

write the phenotype and genotype

Answers

Explanation:

The concepts of phenotype and genotype are related to genetics.

The phenotype is generally called the external appearance of the living thing, which is formed by the genetic information and environmental effects.

Genotype is the genetic information that an organism carries in its DNA.

For example; Character A is the favorite black color. a is the blue color character.

While the Aa display shows the individual with black eyes in the phenotype, the genotype is expressed as heterozygous dominant black eyes.

Mass of the moon is 7.4x10^22 kg and its radius is 1740km, Calculate the value of acceleration due to gravity on the surface of the moon. *​

Answers

Answer:

The gravitational acceleration in the surface of the moon is 1.63 m/s^2

Explanation:

The gravitational acceleration at a distance R of an object of mass M, is given by:

g = G*M/R^2

Where:

G is the gravitational constant.

G = 6.67*10^(-11) m^3/(kg*s^2)

We could think that all the mass of the moon is at its center, then at the surface of the moon, the distance will be equal to the radius of the moon, thus:

R = 1740km

But we want to work with meters, so remember that:

1km = 1000m

then:

1740km = (1740)*1000m = 1740000m

R =  1740000m

And the mass is just:

M = 7.4x10^22 kg

If we input all that in the gravitational acceleration equation, we get:

g = (6.67*10^(-11) m^3/(kg*s^2))*(7.4x10^22 kg)/( 1740000m)^2

g = 1.63 m/s^2

The gravitational acceleration in the surface of the moon is 1.63 m/s^2

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