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vaieri [72.5K]
3 years ago
6

Which of the following is an example of how a scientist might use a model?

Biology
1 answer:
Vinvika [58]3 years ago
4 0
Answer: Marbles placed inside a hollow sphere are used to describe protons in a nucleus.

the marbles are not the protons nor is the hollow sphere the nucleus. Therefore, when the scientist does this, he is using a model. However the rest of the 3 options are the real things you use.
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Severe anemia may trigger an adaptive conversion of:
goldfiish [28.3K]

Severe anemia may trigger an adaptive conversion of yellow bone marrow to red bone marrow.

Anaemia is defined as the decrease or the reduction of the oxygen carrying content of the blood which are the red blood cells.

These red blood cells and other blood cells which include the white blood cells and the platelets are produced in the body by the bone marrows by a process called haemopoiesis.

The bone marrow is divided into two:

  • yellow bone marrow and
  • red bone marrow.

The red bone marrow is made up of stem cells which can be converted to red cells when the need arises while yellow bone marrow is made up of fat.

During health conditions such as anaemia, there is increase in the need of red blood cells by the body.

There is usually the conversation of yellow bone marrow to red bone marrow to compensate for the increased demand of red blood cells.

This conversation is called an adaptive conversation.

Therefore,Severe anemia may trigger an adaptive conversion of yellow bone marrow to red bone marrow.

Learn more here:

brainly.com/question/18921249

3 0
3 years ago
4. For the picture can you answer 3 or 4 please Based on your knowledge about prokaryotic cells and
Lelu [443]

Answer:

For number 3:

The bacterial cell is a prokaryotic cell and the fungal cell is a eukaryotic cell.

Explanation:

I cannot see the cells to answer number 4, but for number three, bacteria is a prokaryote and fungal cells are eukaryotes. You can most likely determine this by the presence of a nucleus (a prokaryote cell will not have one where a eukaryotic cell will).

3 0
3 years ago
Which of the following groups is present in amine compounds? A) COOH group B) PO4 gropu C) NH2 group
Mkey [24]
I think the correct answer from the choices listed above is option D.It is the NH2 group that is present in amine compounds. Amines<span> are formally derivatives of ammonia, wherein one or more hydrogen atoms have been replaced by a substituent such as an alkyl or aryl group.</span>
7 0
3 years ago
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What evidence places fish as the first vertebrates​
Whitepunk [10]

Answer:

Fossils

Explanation:

7 0
4 years ago
Which of the following is the best definition of energy? A. the ability to generate electricity B. the ability to generate heat
PilotLPTM [1.2K]
The phrase that best describe the word "energy" is letter "C. the ability to do work". The unit most commonly used to express energy is Joules (J) which is also derived from the equation of work which is the product of force and the distance that a body moves parallel to the force applied. 
4 0
3 years ago
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