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3 years ago

9

Which of the following allows water to move much faster across cell membranes? A) the sodium-potassium pump B) ATP C) peripheral

proteins D) aquaporins

1 answer:

steposvetlana [31]3 years ago

6 0

Answer:

D

Explanation:

I believe the answer would be aquaporins

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Hormones that help regulate blood calcium levels are made by the A. parathyroid gland. B. pancreas. C. thymus gland. D. adrenal

Kryger [21]

The correct answer is A, parathyroid gland.

The parathyroid hormone is secreted by the parathyroid gland which <span>inhibits osteoblasts, stimulates osteoclasts,</span> reduces the calcium output by the kidneys and promotes absorption of the calcium by the small intestines. Calcitonin, secreted by the thyroid gland, also works to a similar effect.

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3 years ago

What are the functions of the 3 types of nucleotides?

Dima020 [189]

There is 4 adenine, cytosine, guanine, and thymine.

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3 years ago

What conditions prompt hemoglobin to release oxygen? select the three answers that are correct.

Basile [38]

When blood is in the lungs,
where oxygen is plentiful, oxygen easily binds to the first subunit and then quickly fills up the remaining ones. Then, as blood circulates through the body, the oxygen level drops while that of carbon dioxide increases. In this environment, hemoglobin releases its bound oxygen.

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2 years ago

A new kind of tulip is produced that develops only purple or pink flowers. Assume that flower color is controlled by a single-ge

Sophie [7]

Answer:

a. purple allele (C) = 0.609, pink allele (c) = 0.391

b. purple homozygotes = 371, pink homozygotes = 153, heterozygotes = 476

Explanation:

Given -

Purple flowers - 847

Pink flowers - 153

The frequency of recessive genotype i.e

$q^ 2 = \frac{153}{1000} \\q^ 2 = 0.153\\$

Frequency of recessive allele i.e q is equal to

$q = \sqrt{0.153} \\q = 0.391$

As per hardy Weinberg's first equilibrium equation -

$p + q = 1\\p = 1-q\\p = 1-0.391\\p = 0.609$

Frequency of purple homozygous species

$= p^2\\= 0.609^2\\= 0.371$

Number of purple homozygous species $= 0.371 * 1000= 371$

Number of pink homozygous species $= 0.153 * 1000= 153$

Heterozygous species is equal to

$(1-0.371-0.153)* 1000\\= 0.476 * 1000\\= 476$

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3 years ago

Read 2 more answers

1. As an object moves towards another object the sound waves bunch up.

garik1379 [7]

The first is ture the second false the three is ture 4 ture 5 false 6 ture 7 false 8 ture 9 ture 10 false

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4 years ago