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wlad13 [49]
3 years ago
13

A pilus is best describes as a?

Biology
1 answer:
Sindrei [870]3 years ago
5 0

The answer is C. a tube that extends from a bacterium.

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Which shows the best connection between the digestive and excretory system
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Answer: The digestive system rids the body of the cells' waste and the excretory system fuels the cells. The digestive system does physical digestion while the excretory system carries out chemical digestion.

Explanation:

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About how long ago did the first single-celled life form appear on Earth?
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Around 4.1 billion years ago, the first single celled life form appeared on Earth

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3 years ago
How are fish with backbones inside their bodies classified? a.crustaceans b.cephalopods c.mollusks d.finfish e.shellfish
Romashka [77]
D. Finfish is the correct answer.
4 0
3 years ago
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There are 100 cats in a population that follows hardy-weinberg conditions. 4 cats display a recessive white coat color. how many
mr Goodwill [35]

We know that Hardy-Weinberg conditions include the following equations:


p^{2}+2pq+ q^{2}=1


where p+q=1


And where p = dominant, and q = recessive; this means that p^{2} is equal to the homozygous dominant, 2pq is the heterozygous, and q^{2} is the homozygous recessive .


So we have 100 total cats, with 4 having the recessive white coat color. That means we have a ratio of \frac{4}{100} or 0.04. Let that equal our q^{2} value.


So when we solve for q, we get:


q^{2}=0.04

q=\sqrt{0.04} =0.2


Now that we have our q value, we can use the other equation to find p:


p+q=1


p+0.2=1


p=0.8


So then we can solve for our heterozygous population:


2pq=2(0.8)(0.2)=0.32


This is the ratio of the population. So we then multiply this number by 100 to get the number of cats that are heterozygous:


0.32*100=32cats


So now we know that there are 32 heterozygous cats in the population.

8 0
3 years ago
What type of molecule is the capsid surrounding the viral nucleic acid made of?
Thepotemich [5.8K]
I think it’s will be A but not sure
5 0
3 years ago
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