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3 years ago

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How does cytotoxic T cells work

1 answer:

NARA [144]3 years ago

7 0

Answer:

is this it?

Explanation:

Cytotoxic CD8 T cells carry out their killing function by releasing two types of preformed cytotoxic protein: the granzymes, which seem able to induce apoptosis in any type of target cell, and the pore-forming protein perforin, which punches holes in the target-cell membrane through which the granzymes can enter.

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Red blood cells: send messages protect the body support bones transport oxygen

attashe74 [19]

Answer:

Transport oxygen.

Explanation:

Red blood cells transport oxygen throughout the body with the help of hemoglobin.

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2 years ago

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Answer:

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3 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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Which part of the heart takes blood from the veins and pumps it into a ventricle?.

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Answer:
The right atrium takes blood from the veins and pumps it into a ventricle

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