why does a microscope stage have a small hole in it?

Answers

Answer 1

You can look through the hole fro a closer look


Related Questions

What forms the bone

A. connection
B. epithelium
C. muscle
D. nervous​

Answers

Answer:

n epithelium

Explanation:

Cells are limited in size by the
a. rate at which substances needed by
the cell can enter the cell through
its surface.
b. rate at which the cell can manufacture
genetic information.
c. amount of material the cell can collect
to fill itself.
d. amount of cell membrane the cell
can produce.

Answers

Answer:

The Answer is A

Explanation:

hope this helps

the circulatory system and the nervous system both

Answers

The circulatory system provides your brain with a constant supply of oxygen-rich blood while your brain regulates your heart rate and blood pressure.Answer:

Explanation:

What are the products of the light reactions used for during in the dark reactions of photosynthesis?

Answers

Answer:

sugar molecules and other organic molecules necessary for cell function and metabolism

Explanation:

dark reaction takes place in the stroma

stroma is aqueous fluid surrounding the stacks of thylakoids and the cytoplasm

thylakoids convert light energy to chemical energy

Cytoplasm is a thick solution that fills each cell and is enclosed by the cell membrane

Which is a synonym for male and female sex cells?

Answers

Answer:

it's called a "gamete". They are also referred to as sex cells.

Your first assignment is to find an article talking about a scientific topic. This article can be from a source of your choosing (such as a newspaper or an internet article). You will need to include the article with your assignment. Once you have your article, you will write a short paper identifying two inferences made in this article and the facts the writer used to make these inferences. Then, elaborate on whether the two inferences made by the author are valid or more opinion-based. Be sure to include your reasoning of why you came to this conclusion. Some examples of where you can find articles about scientific topics are:

Answers

Answer:

Mahal kitang labis kahit titi mo is to short kantutan tyu Maya aylab u mharr

Step 1: Click touch here to begin the app. You want to move to the "Choose Your

Challenge!" menu. From the menu choose “Build a Membrane!" Dr. Vial has a vile weapon

(note the play on words) that destroys plasma membranes. Without the plasma

membrane

all

cells of living things will die because they are unable to

maintain

homeostasis

Answers

Answer:

Well, what kind of answer are you looking for? These answers you have are correct.

Explanation:

If this isn't the question could you please show he correct one?

Without the plasma membrane all cells of living things will die because they are unable to maintain homeostasis.

What are the different functions of these cell organelles?

Here are different function or different department of every cell organelles and these are mentioned below:

Shipping department - Golgi apparatusFactory interior - CytoplasmVessels- Cellular package containing products such as proteinWarehouse for storage of products -Vacuole

The term cell organelles has been defined as the organ or part of the cell which has been considered as the part of the cell. Cell organelles are mitochondria, ribosomes, vaccuoles, cell wall, endoplasmic reticulum, nucleus and many more.

In the cytoplasm, tRNA, play major role in protein synthesis and tRNA brings amino acids to the ribosome according to the codon in the mRNA which is translating. tRNA contain anti-codon which recognize and bind to the codon as by base pairing  where they are linked to protein synthesis as well as tRNA is loaded by aminoacyl-tRNA synthetase enzyme with correct amino acid, which they bring to ribosome for protein synthesis.

Therefore, Without the plasma membrane all cells of living things will die because they are unable to maintain homeostasis.

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Which is the smallest unit of life?

Organs

Molecules

Cells

Atoms

Answers

Answer:

Cell

Explanation:

Cell is defined as the basic,structural, functional,smallest and simplest unit of life. While cell us the smallest unit of life is because if anything happens to your cell,expecially the ones the ones that controls your heart,you may die. Which is why cell us the smallest unit if life

The cell is the smallest unit of life

How does Dinosaur and dragon go into extinction​

Answers

Answer:

they were hit by a astroid

Explanation:

Which is NOT a characteristic of life?

Answers

Answer:

B. breathing is not a characteristic of life

Explanation:

hope this helps

which does not maintain the health of your endocrine system?

Answers

Answer:

Getting 5 hours or less of sleep every night.

Explanation:

Hope this helps...

the allowance for uncollectible accounts is a contra account to

Answers

The allowance for uncollectible accounts refers to a company that accepts the risk of giving credits to those who may not pay it back. These debts are written off as uncollectable and are a contra asset on the balance reports.

Uncollectable accounts are also often referred to as doubtful accounts. This implies that the company that is giving the credit accepts the possibility that this entity may not return the money. This results in a loss for the company as is recorded as a contra asset on the balance sheets for the company. Some ways for companies to control this loss are:

Establishing requirements for creditsUsing credit collectors to claim large debtsLimiting amount of loss permitted based on historical and industry records.

A contra asset or contra account is an account on a companies balance sheet that decreases the balance of certain assets. Contra derives from Latin and means against. Meaning this is an account that goes against the positive balance of the company, it subtracts from the companies earnings.

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Explain what a basal cell is and why they are so important to the rest of the epidermis.

Answers

Answer:

The basal cell layer contains cells called melanocytes. Melanocytes produce the skin coloring or pigment known as melanin, which gives skin its tan or brown color and helps protect the deeper layers of the skin from the harmful effects of the sun.

3) Will there come a time when you can agree to population control in the US? Why or Why not?

Answers

Answer:

There could come a time when this writer would agree to population control.  It is through the arena of education about overpopulation in the United States. With this in mind, people understand the effect this has on our economy as well as resources. In my opinion, education opens eyes to the actual situation. In other words, one must educate women about having children. Then, one can anticipate women getting an education, gaining financial stability, and having a smaller family rather than a large one.

Explanation:

Question 6
Which list best identifies the processes that move carbon through an ecosystem?
A
photosynthesis, respiration, consumption, decomposition, erosion, and burning
B
respiration, transpiration, weathering, consumption, burning, and sedimentation
Ос
respiration, transpiration, decomposition, weathering, sedimentation, and infiltration
D
photosynthesis, respiration, sedimentation, infiltration, erosion, and decomposition

Answers

Carbon cycles through the ecosystem via the processes of; photosynthesis, respiration, consumption, decomposition, erosion, and burning.

Carbon is one of the nutrients that cycles through the ecosystem. These chemical elements move through the various spheres of the ecosystem such as atmosphere, lithosphere and hydrosphere.

Carbon cycles through the ecosystem via the processes of; photosynthesis, respiration, consumption, decomposition, erosion, and burning.

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which region of the brain is larger in humans and primates than in other vertebrates?

Answers

Answer is cerebral cortex

Which region of the brain is larger in humans and primates than in other vertebrates?
A. cerebellum
B. midbrain
C. spinal cord
D. cerebral cortex
D

Lactic acid fermentation can be modeled by which equation?
O Lactic acid + NADH → Pyruvic acid NADH
O Pyruvic acid + NAD+ → Lactic acid + NADH
O Lactic acid + NADH → Pyruvic acid + NAD+
O Pyruvic acid + NADH → Lactic acid + NAD+

Answers

Lactic acid fermentation can be modeled by the following equation: Pyruvic acid + NADHLactic acid + NAD+

LACTIC ACID FERMENTATION:

Fermentation is a process undergone by some anaerobic organisms. Ideally, the process of cellular respiration proceeds as follows in the presence of oxygen: Glycolysis- Kreb cycle - ETC.

However, in the absence of oxygen (anaerobic condition), the product of glycolysis which is pyruvic acid combines with an electron carrier (NADH) to give rise to lactic acid and NAD+.

This means that pyruvic acid is reduced while NADH is oxidized as modelled in the following equation:

Pyruvic acid + NADHLactic acid + NAD+

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Answer to Question 1:

Well, given the choices to the question above 'Lactic acid fermentation can be modeled by which equation?', I would say that the best choice would be 'Pyruvic acid + NADH → Lactic acid + NAD+', or in other words, Option D.

Explanation for Question 1:

For a further explanation expanding more on the first question and showing why, the user above's answer is super helpful.

Answer to Question 2:

For the additional question asked 'In the Krebs cycle, how is citric acid formed?', I didn't see the options, however I believe they are:

O Carbon dioxide bonds with a chain of coenzyme A.

O Pyruvic acid molecules are broken down by an acetyl group.

O Acetyl-CoA joins with a large molecule called ozaloacetic acid.

O Enzymes combine hydrogen ions, oxygen, and electrons.

^ This being said, I would say your best choice would be Option C.

Explanation for Question 2:

The Krebs cycle begins when acetyl-CoA combines with a four-carbon molecule called OAA, aka oxaloacetate. This begins to produce citric acid, in which has six carbon-atoms. This is why the Krebs cycle is also referred to as 'the citric acid cycle.'

~Thank you for asking your question here on Brainly. Hope we helped :D Happy holidays!

Identifying planets
What is the identity of planet A?
What is the identity of planet B?

Answers

Answer:

1) Mars

2) Earth

Explanation:

Here, the planet A is mars, and planet B is Earth as per the information given here.

What are planets?

A planet is basically a celestial body which orbits the Sun. It has enough mass to overcome rigid body forces as well as adopt a hydrostatic equilibrium shape (almost round), has cleared the area in and around its orbit, and is in orbit around the Sun.

A rocky planet is basically the feature of Mars. Volcanoes, impacts, winds, crustal movement, and chemical reactions have all changed its solid surface.

The surface of Earth, a rocky planet along with the mountains, canyons, plains, and other landforms, is solid and dynamic.

Basically, the world is mostly encapsulated with the component namely water.

The only planet in solar system renowned to have liquid water on its surface is Earth, which is the fifth largest planet overall.

Thus, A is mars and B is Earth.

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Observe the model below. Explain one strength(advantage) of the model and one limitation ( disadvantage) of the model

answer ASAP

Answers

As to the model of the different types of saccharides displayed, we can name its efficiency as a clear strength, and its lack of more examples as a limitation.

Using models to display information can be advantageous in that they allow the user to visualize something that may otherwise be difficult to picture. This increases memory retention and increases learning.

One example of a strength displayed by this model is its efficiency. By this, I mean that the model provides a clear and easy way to compare the differences in structure between the types of saccharides by positioning them all onto the same page, near one another enough to make quick and easy comparisons.

The noticeable limitation of the model, however, is its lack of further examples. The model in question shows a single example for each type of saccharide, limiting the user's knowledge to the difference between the types only. After using this model, the user will still lack information as to how saccharides of the same type can vary from one another.

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PLEASE HELP ME ASAP
JAHAHAHAHABA

Answers

Answer:

Plastic wrap is commonly made out of PVC (Polyvinylidene Chloride). In recent years other PVC alternatives have become more popular. The most popular option in recent years is LDPE (Low-Density Polyethylene) because it is considered to be safer for the body. The best management for plastic wrap would have to be by you taking plastic wrap to local retail stores where they collect plastic grocery bags for recycling. Any package that you see with the How2Recycle Store Drop-Off label can be recycled this way.

Human waste from excretion is probably classified as organic waste, since it comes from you and the food you eat. The best management for human excretion would probably be sewer pipes that lead into the sewage system that lead into other mainframes.

Wastewater is an odd typing since it contains human waste, food scraps, oils, soaps and chemicals. The best management for this would include physical water treatment, biological water treatment, chemical treatment, and sludge treatment.

what determines the primary structure of a dna molecule?

Answers

Answer:

I would go with the sequence of the bases in the nucleic acid chain

The sequence of nucleotides defines the primary structure of DNA and RNA where the nucleotides are linked to the oxygen on the 5' carbon of one through the phosphodiester bond linking to the oxygen on the 3' carbon of the other.

What is DNA?

Deoxyribonucleic acid is a polymer which is made up of two polynucleotide chains that coil around each other to carry the genetic instructions for growth, function, development, and reproduction in all known organisms and many viruses. DNA and RNA are nucleic acids.

DNA is made up of chemical building blocks called nucleotides which are building blocks made up of three parts:

1. A phosphate group

2. A sugar group

3. One of four types of nitrogenous bases i.e. adenine (A), cytosine (C), guanine (G), and thymine (T)

To form a strand of DNA, nucleotides are linked in chains, alternating between phosphate and sugar groups.

Thus, the sequence of nucleotides defines the primary structure of DNA and RNA where the nucleotides are linked to the oxygen on the 5' carbon of one through the phosphodiester bond linking to the oxygen on the 3' carbon of the other.

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How does the hydrogen concentration of a solution change when the pH shifts from 6 to 2? (4 points)

Answers

Answer:

the overall concentration of hydrogen ions is universely related to its PH and can be measured on the physical (figure 1). therefore, the more hydrogen ions present.

The hydrogen ion concentration of a solution increases when pH shifts from 6 to 2.

What is pH?

a metric for determining how basic or acidic a substance or solution is. The pH scale ranges from 0 to 14. A pH value of 7 is considered neutral on this scale, meaning it is neither acidic nor basic. It is more acidic if the pH value is below 7, and more basic if the pH value is above 7.

Typically, a pH meter is used to measure pH, which converts the difference in electromotive force (electrical potential or voltage) between suitable electrodes put in the solution under test into pH measurements.

The different solutions have different pH based on the concentration of hydrogen ions. The concentration of hydrogen ions increases when pH shifts from 6 to 2.

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a biologist studies an ecosystem and finds that it has very few trophic levels. What can you conclude about this ecosystem?

Answers

not a stable ecosystem

Which phase of mitosis is the shortest?

Answers

Answer:

Anaphase

Explanation:

Answer:

Anaphase

Explanation:

Anaphase is the shortest stage of mitosis.

What type of evidence does cosmic background radiation provide about the origins of the universe?

It supports predictions of the composition of the early universe.

It pinpoints the size of the original universe.

It verifies that the early universe was once extremely hot.

It proves that the universe is expanding.

Answers

Answer:

it verifies that the early universe was once extremely hot.

Answer:

it verifies that the early universe was once extremely hot.

Explanation:

Which sources of energy are used by humans to produce electrical energy

Answers

Answer: sources of energy are used by humans to produce electrical energy fossil fuels (coal, natural gas, and petroleum), nuclear energy, and renewable energy sources.

Explanation:

I hope that's what you're looking for. Have a nice day.

10. If an A (adenine) is exchanged for a C (cytosine) in a gene, it is a:

Answers

Answer:

Explanation:

A mutation occurs, and cytosine is replaced with adenine. ... (Figure) Adenine is larger than cytosine and will not be able to base pair properly with the guanine on the opposing strand. This will cause the DNA to bulge.

where are the peripheral proteins located?

Answers

Answer:

These are located in/around the cell membrane, they usually sit around either side of the cell. But, they don't cross the cell membrane I hope this helps.

Why is ammonification an important process? (4 points)

Answers

It is important because it provides nitrogen to the soil in a manner that lets plants use nitrogen and pass it through the food chain.

PLEASE ANSWER

Horace has decided that he is going to do as many push-ups as he can on Monday mornings to see how well his strength building exercises are working. If the number increases, he will know that he is getting stronger. Is this a good strategy?

options:

A. Yes, this is an effective way to monitor strength.
B. No, push-ups are a better indicator of cardio fitness than strength.
C. Yes, but it would be better if he could get his strength professionally measured.
D. No, if he can do more push-ups it just means that he is getting better at push-ups.

please no links

Answers

A, I am pretty sure!! I am very sorry if I am wrong make sure to check with someone or a family member, teacher etc before submitting :)

Many people push themselves to the limit of 300 times every day. But if done properly, even 50 to 100 push-ups should be enough to maintain a strong upper body for the average person. Thus, option A is correct.

What are the benefits of doing push-ups daily?

Start with 20 push-ups, but don't limit yourself to that number. It's decisive to continually lifting the amount to keep your body guessing.

Push-ups done the old-fashioned way are good for developing upper body strength. They exercise the shoulders, pectorals, and triceps.

By contracting (drawing in) the abdominal muscles, they can also strengthen the lower back and core when done with perfect technique. Push-ups are a simple and powerful exercise for increasing your strength.

Therefore, Yes, this is an effective way to monitor strength.

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