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Evgen [1.6K]
3 years ago
6

Please choose the answer that best completes the blanks of this sentence in the correct order. _______ are substances that provo

ke a specific immune response which is so discriminating that only a single molecular fragment, called an __________, actually interacts with the lymphocyte's receptor
Biology
1 answer:
Inessa05 [86]3 years ago
5 0
The correct answer is antigens and epitope.
An antigen is a substance which triggers an immune response in an organism. This can be either a foreign substance, such as a pathogen, or a specific part of the host organism (in this case this is an autoimmune response). The presence of an antigen activates a specific part of the immune system, called antibody. Each antigen has a specific antibody, which is tailored by the immune system accordingly. More specifically, the antibody has a specific structure, called paratope, which is complementary and binds like a key to a specific structure of the antigen, called epitope. 
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Explanation:

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The solutions in the two arms of a U-tube are separated by a membrane that is
IgorC [24]

Answer:

See the answer below

Explanation:

Recall that: <em>Water potential = pressure potential + solute potential</em>

Since the system is an open one;

<em>Water potential = solute potential = -iCRT</em>

i = number of particles the molecle will make in water (1)

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To calculate water potential on side A:

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For side B:

C = 2 M

Water potential = - (1 x 2 x 0.0831 x 295) = -49.03 bars

b.

<em>Since side A has higher water potential than side B, water will flow from side A to side B until equilibrium is established between the two sides. Water always flows from the region of higher water potential to the region of lower water potential.</em>

<em />

6 0
3 years ago
Which step in cellular respiration happens first?
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Read 2 more answers
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