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CaHeK987 [17]
3 years ago
7

Which of the following choices is the best example of how the cell membrane and mitochondria might work together to make energy

in a particular cell?
A. In animal cells, the mitochondria allows materials in and out of the cell, while the cell membrane uses nutrients to make energy (ATP) for the cell.

B. In a plant cell, the mitochondria allows materials in and out of the cell, while the cell wall makes food for the cell by photosynthesis.

C. In a plant cell, the cell wall allows materials in and out of the cell, while the mitochondria makes food for the cell by photosynthesis.

D. In animal cells, the cell membrane allows materials in and out of the cell, while the mitochondria uses nutrients to make energy (ATP) for the cell.
Biology
2 answers:
never [62]3 years ago
7 0
The answer is D. in animal cells, the cell membrane allows materials in and out of the cell, while the mitochondria uses nutrients to make energy (ATP) for the cell.
dem82 [27]3 years ago
4 0
The answer would be a B c d
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Suppose the human trait for freckles is controlled by a simple dominant and recessive relationship at one locus. Freckles, F, is
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Answer:

0.549 is the frequency of the F allele.

0.495 is the frequency of the Ff genotype.

Explanation:

<em>FF </em>or <em>Ff</em> genotypes determine freckles, <em>ff</em> determines lack of freckels.

In this class of 123 students, 98 have freckles (and 123-98= 25 do not).

If the class is in Hardy-Weinberg equilibrium for this trait, then the genotypic frequency of the ff genotype is:

q²= 25/123

q²=0.203

q= \sqrt{0.2

q= 0.451

<em>q </em>is the frequency of the recessive f allele.

Given <em>p</em> the frequency of the dominant F allele, we know that:

p+q=1, therefore p=1-q

p=0.549 is the frequency of the F allele.

The frequency of the Ff genotype is 2pq. Therefore:

2pq=2×0.549×0.451

2pq=0.495 is the frequency of the Ff genotype.

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