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Dafna11 [192]
3 years ago
15

Which of the following occurs in the upper respiratory system?

Biology
1 answer:
Mariana [72]3 years ago
3 0
Head Area: The nose and mouth take in oxygen that goes through the throat and into the lungs. There are 2 ways, but a little flap opens when oxygen comes in and closes right after. This is used so food doesn't get in the wrong way.
Chest Area: Capillaries in the lungs move the oxygen to the heart to pump it throughout the body.
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What two chemicals result when rhodopsin decomposes ?
koban [17]

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4 0
3 years ago
Which factor when doubled would produce the greatest change in the centripetal force?
yaroslaw [1]
Let us consider the centripetal force equation,  
centripetal force F = mv² / r  
 f= force
 v= velocity
 m= mass
 r= radius.
 
 in all the factors only velocity has the power of 2. so when you double the velocity then it will become square of that. 
 if v= 2v , F = m4v² / r 
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7 0
3 years ago
In a humoral or antibody-mediated immune response, specific B cells are stimulated by Helper T cells to help transform into plas
steposvetlana [31]

Answer:

An important feature that B-cells must have in order to become plasma cells and synthesize antibodies is increased rough endoplasmic reticulum in order to have the surface area needed for antibody production (option A).

Explanation:

The transformation of B cells into plasma cells to produce antibodies is a well known function of lymphocytes related to the immune response. This leads to a series of structural transformations in order to performs their function.

The rough endoplasmic reticulum (RER) has the function of contributing to protein synthesis, in conjunction with the ribosomes that are attached to it and the information of the mRNA.

<em>One of the changes experienced by B cells in their transition to plasma cells is the availability of larger RERs, in preparation for antibody synthesis, formed mostly by proteins</em>.

Learn more:

Plasma cells and humoral immune response brainly.com/question/1512036

5 0
3 years ago
Which statement about photosynthesis is correct? a Plants get the energy they need for photosynthesis from soil. b Plants get th
Phoenix [80]

Answer:

B) plants get the energy they need for photosynthesis from sunlight

Explanation:

5 0
3 years ago
Help me please :x brainliest to correct answer
Reil [10]

Answer:

B

Explanation:

I hope this helps!!! I am very sorry if it was wrong though!!!

7 0
3 years ago
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