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Mandarinka [93]
4 years ago
5

The cell is taking in substances through membrane proteins, without any energy expenditure of its own. The substances naturally

follow their concentration gradient. However, they must go through the protein channels, because they are too large to squeeze through the cell membrane. This process is called
Biology
2 answers:
Hitman42 [59]4 years ago
6 0

The right answer is facilitated diffusion.

Facilitated diffusion is a diffusion mechanism facilitated by membrane transporters. it's the spontaneous passage of molecules or ions (like the passive diffusion) through a biological membrane through transport molecules (unlike passive diffusion). This process does not consume energy (like the passive diffusion) and therefore does not involve active transportation.

pochemuha4 years ago
6 0
Facilitated diffusion. because the protein channels must help the substance get into the cell based on fitting. It's important to regulating what comes in and goes out.
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Which of the following describes how an animal welfare activist would feel about raising cows for food and leather?
Jet001 [13]

Answer:

Answer B

Explanation:

8 0
3 years ago
Which of the following is NOT a structural difference between RNA and DNA?
kaheart [24]

The answer is D.

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Good luck! :)

5 0
4 years ago
Describe how the invasive caulerpa algae genus break the rules of sa:vol.
777dan777 [17]
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5 0
3 years ago
Black coat color in horses is conferred by the presence of a dominant B allele. Chestnut horses are genotype bb. A population of
AysviL [449]

Answer:

Frequency of B allele is 0.6681

Explanation:

If p represents the frequency of dominant allele and q represents the frequency of  recessive allele, according to Hardy-Weinberg equilibrium:

p + q = 1

p² + 2pq + q² = 1

where p² = frequency of homozygous dominant genotype

q² = frequency of homozygous recessive genotype

2pq = frequency of heterozygous genotype

Given that number of recessive chestnut horse = 28

Total horses = 226 + 28 = 254

frequency of b² genotype = 28/254 = 0.1102

frequency of recessive b allele = √0.1102 = 0.3319

So, frequency of B allele =

1 - 0.3319 = 0.6681

Hence frequency of B allele is 0.6681

7 0
3 years ago
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8 0
3 years ago
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