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GenaCL600 [577]
3 years ago
14

Help please HELP ME I WILL GIVE YOU BRAINLIST!!!

Biology
1 answer:
Stells [14]3 years ago
5 0

All you have to do is resherd it

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How does photosynthesis contribute towards maintaining a clean environment and ensuring food security?​
azamat

Answer:

Well for one photosynthesis gives out oxygen. This makes all animals able to live. So in that way it helps us and the world around us. Without photosynthesis we also could not eat food. No animals could live and no plants ould live. VERY IMPORTANT!

Explanation:

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3 years ago
Calculate the frequency of b cells specific for antigen a on day 36 if the antibody concentration on day 36 is about 8 × 103. (f
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-The number of B cells producing the antibody is proportional to the concentration of that antibody.

-On day 16, one out of  100000 B cells are specific for antigen A
\frac{1}{100000} = 1 x 10⁻⁵ B cells

- on day 16, Antibody concentration is  2 × 10¹= 20 Antibodies
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20 antibodies ------------ 1 x 10⁻⁵ B cells
8000 antibodies--------------x

x= (8000 x 1 x 10⁻⁵)/ 20
x= 4x10⁻³ or 1 in 250 are <span>B cells specific for antigen A</span>
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3 years ago
What is the correct amino acid sequence for the<br> mRNA code AUGCCAGUAUGA
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4 0
2 years ago
What is a key part of Darwin''s idea of natural selection? A. Earth is very old. B. Everything has a predator. C. Organisms'' ch
svp [43]
"C. Organisms' characteristics are carried <span> on DNA.</span>" would be the best fit, although this still isn't really the core idea behind natural selection, which is that animals survive based on how "fit" they are for their environment.
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3 years ago
How are artificial selection and natural selection different? Select the best answer from the choices below.
OleMash [197]
D. In artificial selection
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3 years ago
Read 2 more answers
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