The real length of one villus is 0.8 mm
Calculate the image length if the villus is viewed at a magnification of x20

magnification = size of image / size of real object

Answers

Answer 1

Answer:

Explanation:

Re arrange formula=Size of image=Magnification*size of real image

0.8mm*20=16mm

Answer 2

The image length will be "16 mm". A further explanation is below.

Given:

Magnification,

20

Size of real image,

0.8 mm

As we know the formula,

→ [tex]Magnification = \frac{Size \ of \ image}{Size \ of \ real \ image}[/tex]

or,

→ [tex]Size \ of \ image=Magnification\times Size \ of \ real\ image[/tex]

By substituting the values, we get

→                         [tex]=20\times 0.88[/tex]

→                         [tex]= 16 \ mm[/tex]  

Thus the response above is correct.

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Related Questions

5. The organs of the respiratory system include the trachea, the bronchi, the diaphragm, and the ___________________________.

Answers

Larynx, Pharynx and lungs

WHAT IS The 2nd phase of mitosis

Answers

Answer:

When prophase is complete, the cell enters prometaphase — the second stage of mitosis. During prometaphase, phosphorylation of nuclear lamins by M-CDK causes the nuclear membrane to break down into numerous small vesicles. As a result, the spindle microtubules now have direct access to the genetic material of the cell.

Explanation:

Cory states the following argument about the evolution of aardvarks and anteaters.

"Aardvarks and anteaters both use long, sticky tongues to capture and eat ants or termites. Aardvarks are native to Africa, while anteaters are native to the Americas. However, their similarities provide evidence that both groups of species evolved from a common ancestor that used its tongue to eat ant-like insects."

Which claim, if supported by evidence, would provide the strongest counter-argument AGAINST Cory's argument?
A. The tongues and diet of aardvarks and anteaters are an example of convergent evolution.
B. The tongues and diet of aardvarks and anteaters are an example of adaptive radiation.
C. The Americas and Africa were once joined together, and animals roamed freely between the two lands.
D. A long, sticky tongue evolved in response to the tunneling behavior of ants, an example of coevolution.

Answers

So for the answer for this one is going to be d

PLEASE HELP
Which of the following increases genetic variation by forming entirely new alleles?

Natural selection
Genetic drift
Mutation
Gene flow

Answers

Answer:

Mutation, forms entirely new alleles, the other answer choices change preexisting allele distribution within the population.

Answer:

mutation should be the answer

4)
In which case will a mutation change the phenotype of the organism?
A)
If the mutation codes for the same amino acid
B)
If the mutation codes for a different amino acid, but the protein shape does
not change
If the mutation codes for a premature stop codon
D)
If the mutation occurs in an intron

Answers

Answer:

C.) If mutation codes for a premature stop codon

Explanation:

This would cause an incomplete protein

Where is the cerebellum located in the brain?

Answers

Answer:

The cerebellum (back of brain) is located at the back of the head. Its function is to coordinate voluntary muscle movements and to maintain posture, balance, and equilibrium.

Explanation:

- Eijiro <3

Answer:

The cerebellum (back of brain) is located at the back of the head. Its function is to coordinate voluntary muscle movements and to maintain posture, balance, and equilibrium.

Explanation:

What happens when plates meet? (4 complete sentences minimum)

Answers

Answer:

If two tectonic plates collide, they form a convergent plate boundary. Usually, one amongst the converging plates will move beneath the opposite, a process called subduction. ... The new magma (molten rock) rises and will erupt violently to make volcanoes, often building arcs of islands along the convergent boundary. When two plates are moving far from one another, we call this a divergent plate boundary. Along these boundaries, magma rises from deep within the world and erupts to make new crust on the lithosphere. Most divergent plate boundaries are underwater and form submarine mountain ranges called oceanic spreading ridges. While the method of forming these mountain ranges is volcanic, volcanoes and earthquakes along oceanic spreading ridges aren't as violent as they're at convergent plate boundaries.

Explanation:

How are traits
removed from
the gene pool?

A. Organisms with less desirable traits do not reproduce

B. Organisms with less desirable traits reproduce the most

Answers


A. Organisms with less desirable traits do not reproduce
is the answer

what caused the three kinds of rocks to be different from one another​

Answers

Answer:

The heat and pressure.

Explanation:

Heat and pressure caused the three rock types to change, as well as weathering and erosion.

Answer:

Different rocks have different characteristics because of their minerals, the ways in which the rocks were formed, and the processes that acted on the rocks since they were formed.

Explanation:

Hope this helped!!!

Each of DNA's four kinds of bases can pair with
only one of the other DNA bases. Using the base-
pairing rules, which of the following is the correct
order of bases that would pair with the following
string of bases on a DNA molecule:
Adenine, guanine, guanine, cytosine, thymine,
adenine
O A. Cytosine, thymine, thymine, adenine,
guanine, cytosine
O B. Thymine, cytosine, cytosine, guanine,
adenine, thymine
O C. Thymine, adenine, adenine, guanine,
cytosine, thymine
O D. Guanine, adenine, adenine, thymine,
cytosine, guanine

Answers

Answer:

The correct answer is - B. Thymine, cytosine, cytosine, guanine, adenine, thymine.

Explanation:

According to the base-pairing rule, the one purine binds with a specific pyrimidine always, the purine adenine (A) only pairs with the pyrimidine thymine (T)  and similarly, the purine guanine (G) only pairs with the pyrimidine cytosine (C) in DNA, and in RNA the purine adenine (A) binds with the only uracil.

Here, the bases are -

Adenine, guanine, guanine, cytosine, thymine,  adenine

the string of their base pair would be:

Thymine, cytosine, cytosine, guanine, adenine, thymine.

Which of the following is not a threat to biodiversity? A. Climate change B. Habitat destruction C. Captive breeding programs D. Invasive species

Answers

Answer:

C. captive breeding programs

Explanation:

Captive breeding programs aim to breed more of an animal that may have been struggling to survive, they may even be beneficial to biodiversity.

Imagine a population of moths. White moths are easier for birds to see and eat. Black moths blend into their surroundings, so they are less visible to birds than white moths. As a result, black moths are more likely to survive and reproduce, enabling the gene for black coloration to be passed on to the next generation. This increases the frequency of genes for black coloration in the population. Which evolutionary process does this scenario describe

Answers

Answer:

The correct answer is - natural selection.

Explanation:

Natural selection is a process of adapting according to the environmental change in order to survive and reproduce and increase their number. It is represented by Darwin for the first time. Natural selection leads to evolution.

In this case, White moths adapt according to the environment by increasing the population of black moths in order to blend with the surrounding and as the result, black moths are more likely to produce and survive and passed this trait to the next generation.

Scientists have discovered that all living things can be traced to a single ancestor Which following statements best relates this discovery to the evolution things
A. All living things have life cycles that include birth and death.
B. All living things are made out of the same types of macromolecules.
C. Many organisms have gone extinct since life appeared on Earth.
D. Most organisms alive today are unlike organisms from the past.

Answers

Answer:

A.all the living things have life cycles that include birth and death

Neurons make up the communication network in your body called ______

Answers

Answer:

Nerve Cells

Explanation:

which of the following properties of water are essential for life on Earth?​

Answers

Answer:

Option D

Explanation:

Complete question

which of the following properties of water are essential for life on Earth?​

A) polarity

B) Cohesion & Adhesion

C) High heat capacity

D) All the above

Solution

Some essential properties of water are as follows –  

a) Polarity

b) Solvent

c) High heat capacity - it is essential to maintain the temperature on earth. The water bodies are comparatively cooler than the temperature of earth

d) High heat of vaporization

e) Cohesion – It is essential for surface tension & capillary action

f) Adhesion – It is essential for surface tension & capillary action

g) Lower freezing density – Due to this reason, ice is lighter than water

Hence, option D is correct

Which parts of photosynthesis occur in the thylakoid membranes of the grana? Check all that apply.

The Sun’s energy is captured.

Carbon dioxide is used to build sugars.

Oxygen is produced.

Energy is transferred to ATP.

Answers

Answer:

I think there would be three correct answers from the  choices listed above. The parts of photosynthesis which occur in the thylakoid membranes of the grana would be that the Sun’s energy is captured, oxygen is produced and energy is transferred to ATP. Hope this answers the question.

Explanation:

13. What are the immunisation programmes available at the nearest health centre in your locality?​

Answers

Answer:

Explanation:

This is because immunization programmes are programmes organised by the government to prevent some certain diseases by boosting our immune system to prevent them through vaccines.

Theses programmes for infants include DPT, measles, poliomyelitis, BCG and MMR.

(ii) For childre include TT, small pox, DTTyphoid, and TAB.

(iii) For pregnant woman it include TT and hepatitis-B.

i need help with #3 bad please i’ll give u a brainliest if u give me the correct answer i promise

Answers

Answer:

Its A

Explanation:

If you look closeley at the modle you can start to notice a pattern. Therefore a repeating structure. And they arent moving freely since they are combined into a compound to create NaCi.

what ways do we use patterns of classification in science? give examples

Answers

Answer:

Classification is the way scientists use to categorize and organize all of life. It can help to distinguish how similar or different living organisms are to each other

Explanation:

Patterns are used in science to classify objects or phenomena into groups. There are patterns of both similarity and difference.

What is classification?

Classification is the way scientists use to group and categorize objects, phenomenon or life forms. It can help to distinguish how similar or different living organisms are to each other based upon the pattern of their structure and organization.

Patterns are regular and intelligible forms , sequences, or structure that  found throughout nature. Scientific questions may be generated when scientists observe a pattern of events or when something does not match an established pattern.

For example, the frozen water in an iceberg is arranged into a regular, repeating crystal structure—a pattern of similarity. Young children can observe a common pattern of difference, the differences between adult animals and their offspring.

Thus, it is clear from above explanation,  the ways to use patterns of classification in science.

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Identify the kind of response to the following argument: Argument: In nature, a species is more likely to survive when its weak members die out, so we should let the weak in our society die out. Response: In nature, a species is more likely to survive when it lives in its natural habitat, so we should live in our natural habitat. A. refutation by parallel reasoning B. refutation by reduction to absurdity C. refutation by counterexample D. not a refutation

Answers

Answer:

A. refutation by parallel reasoning

Explanation:

A refutation by parallel reasoning is an analogical inference between two arguments. This type of refutation occurs when an argument is invalidated by showing that the argument's conclusion is not supported by its premises, thereby the structure of the argument is incorrect. The parallel argument should demonstrate that the premises of the target argument are founded in a fallacy or don't provide a strong enough rationale to support/accept its conclusion.

Which description explains why there are two high and two low tides in a day? (4 points)

Earth moves closer to the sun and moon twice a day.

Earth revolves around the tidal bulges created by gravitational forces.

Earth rotates in and out of a tidal bulge twice a day.

The moon's gravity increases over the oceans and decreases over the land.

Answers

Answer:

Earth rotates in and out of a tidal bulge twice a day.

Earth always has two surrounding gravitational forces, one proceeding from the moon and one from the sun.

The sun's pull, despite the fact our sun is further then the moon, is stronger and creates the high tide, and the moon the low tide. But as we know our earth moves, now exposing the other side to the sun which in turn leaves the other side of earth with the high tides and the other with the low tides. Tides never move, what moves is earth.

Hope it helped!

The elephant reproduces
sexually. If the parent cells
have 38 chromosomes, how
many chromosomes do the
elephant sex cells have?

Answers

Answer:

5 sex cells

Explanation:

what is electromagnetism​

Answers

Answer:

Electromagnetism is a branch of physics involving the study of the electromagnetic force, a type of physical interaction that occurs between electrically charged particles. ... At high energy the weak force and electromagnetic force are unified as a single electroweak force.

Create a meaningful sentence using both words listed in each sentence. Nucleus, chromosome(s), Gene, trai,t Inherit, DNA

Answers

Dna is found in chromosomes located in the nucleus, this dna allows genes and traits to be inherited.

For anybody with this question
Here is your answer
1
3
4

Answers

Thanks you so much !!!!!!!!!!!!!!!!!!!!!!!!!

A student wants to study the effect of adding thermal energy to a system. Which of the following experiments should the student preform? Heat water and record it's change in temperature with time
Freeze water and record its change of temperature with time

Answers

Answer: Option 1: Heat water and record it's change in temperature with time

Explanation:

Thermal Energy = Heat

In pea plants, purple flowers (P) are dominant to white flowers (p). What color flowers would the following genotypes produce in pea plants.

Answers

Need more information

_____ are proteins found on the surface of cells.
Histamine
Antibodies
Antigens
Leukocytes

Answers

Answer:

Histamine

Explanation:

Histamine works by binding to histamine receptors on the surface of cells.

Please help ASAP!!!

Answers

Answer:

hi

Explanation:

Manuodia i think.....

Un estudiante presenta una condicion especial llamada gigantismo su altura es mucho mayor que la de los compañeros de la misma edad y se descarta que la causa sea un problema heredero podemos suponer que este estudiante tiene insuficiente de la hormona esta hormona no ingresa a las celulas en su mecanismo de accion por se.

Answers

La respuesta correcta para esta pregunta abierta es la siguiente.

A pesar de que se te olvidó incluir las opciones o incisos para responder a tu pregunta, podemos comentar lo siguiente, basándonos en nuestro conocimiento sobre la materia.

Podemos pensar que la hormona que no produce este niño que sufre de gigantismo es la hormona llamada somatotropina. Esta hormona es muy importante durante el crecimiento y desarrollo del niño en la infancia porque secreta la adenohipófisis, una glándula vital para el correcto y proporcionado desarrollo en la etapa de la niñez.

Entonces, si no hay una secreción correcta de la hormona somatotropina, ésta hace que el niño desarrolle la condición llamada gigantismo.

Entonces podríamos decir lo siguiente.

Un estudiante presenta una condición especial llamada gigantismo su altura es mucho mayor que la de los compañeros de la misma edad y se descarta que la causa sea un problema heredero podemos suponer que este estudiante tiene insuficiente de la hormona de crecimiento o somatotropina. Esta hormona no ingresa a las células en su mecanismo de accion por ser una derivación de aminoácidos.

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