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Leya [2.2K]
2 years ago
6

Cells of the immune system are able to respond to the

Chemistry
1 answer:
egoroff_w [7]2 years ago
5 0

Answer:

A) antigens present on the invaders

Explanation:

Antigens are substances (usually proteins) on the surface of cells, viruses, fungi, or bacteria. Nonliving substances such as toxins, chemicals, drugs, and foreign particles (such as a splinter) can also be antigens. The immune system recognizes and destroys, or tries to destroy, substances that contain antigens

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Give the result of the following expression with the correct number of significant figures
Marianna [84]
84 m/s x 31.221 s = 2600 m
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3 years ago
Hydrologers study the availability of fresh water on the planet.
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Answer:

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3 years ago
if the temperature is constant what change in volume would cause the pressure of an enclosed gas to increase by a factor of 4
mezya [45]
P1V1=4P1V2
V2/V1= P1/4P1
V2/V1= 1/4
V2=1/4*V1
volume will decrease by factor 1/4


4 0
3 years ago
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What are some two interesting questions you have about constellations?
jok3333 [9.3K]

Answer:

What are the 12 major constellations?

What is the largest constellation?

Explanation:

5 0
2 years ago
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A particular form of electromagnetic radiation has a frequency of 8.11 x 10^14 hz. What is the energy in joules of one quantum o
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<span>E = hxf, où h = constante de Planck = 6,626 x 10 ^ -34Js 

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Hope this answers your question, Kimmyers14!</span>
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3 years ago
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