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Alenkinab [10]
3 years ago
12

Which statement is true?

Biology
2 answers:
Phantasy [73]3 years ago
7 0

Answer:

Viruses are acellular.

Explanation:

Viruses do not have cells, so we can say that viruses are acellular organisms, the structural and functional unit of living things. This feature contradicts the Cell Theory, which says that all living things are formed by cells. Therefore, because they do not have cells, many claim that viruses are not living things.  Viruses are only able to reproduce within a host cell. For this reason we say that they are obligate intracellular parasites.

lana66690 [7]3 years ago
7 0

Answer:

Viruses are acellular.

Explanation:

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zlopas [31]

Out of the following given choices;

a. they increase the amount of energy transferred from the lungs to the blood

b. they increase the flexibility of the lungs as they expand during inhalation

c. they increase the volume of the lungs, allowing more oxygen to be inhaled

d. they increase the surface area of the lungs, allowing the efficient gas exchange

The answer is D. Due to their microscopic nature, they are numerous in the lungs and are also circular-shaped so as to increase the surface area for gaseous exchange. Other characteristics of alveoli that increase gas exchange are that they thinned-walled (with only a layer of cells) and moist.






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3 years ago
A neutral pH level is
Alla [95]
This would be 7. Below 7 is acidic and above is basic. 7 is neutral
7 0
2 years ago
Read 2 more answers
The highlighted structure separates the oocyte from the externally located ________. zona pellucida primary follicle corona radi
Naya [18.7K]

Answer:

Granulosa cells                          

Explanation:

Foliculogenesis is a dynamic and complex process through which the follicle goes through many stages of development in a short period (approximately 60 days in humans and some chimpanzees).

The stages classification is based on morphological changes such as follicular size or diameter, the number of follicular cell layers, etcetera. These classifications might vary among authors but could be denominated as:

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Through each stage, there are certain modifications in the oocyte, follicular cells, and connective tissue. As the oocyte grows, the follicular cells might reach a size twice or three times bigger than the ones of the primordial follicles. Their shape also changes and they adopt an aspect of stratified epithelium. Their cytoplasm gets a granulous aspect, after what these cells receive the name of <u><em>granulous cells</em></u>. The De Graaf follicle characterizes for having a space named follicular antro that displaces the oocyte to one of the sides.    

The oocyte at this point gets surrounded by <u>zona pellucida</u> and <u>corona radiata </u>.    

The follicular antro (The highlighted structure) separates the oocyte from the externally located <u>granulosa cells</u> or follicular cells.    

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3 years ago
Erm...
raketka [301]

Answer:

RNA i believe.

Explanation:

6 0
3 years ago
A causes a living organism to react
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It is known as stimulus or the plural form stimuli. It can be external or internal.
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2 years ago
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