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motikmotik
3 years ago
15

A patient is suffering from tuberculosis, which is a bacterial disease. Which of the following is the correct treatment that sho

uld be given to the patient?
Biology
1 answer:
Dima020 [189]3 years ago
5 0
You should give the patient antibiotics to kill the bacteria
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CD8 helps with recognition of which of the following molecules on the surface of a cell?
Shalnov [3]

Answer:

MHCI

Explanation:

Major histocompatibility complex I (MHCI) is present on the nucleated cells of the body. Endogenous pathway represents the pathway of MHC class I molecules.

MHCI display peptide fragment of proteins to the cytotoxic T cells with the help of CD8 ( Cluster of differentiation). CD8 binds with the MHCI and expressed on the surface of cytotoxic T cells.

Thus, the correct answer is option (D).

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3 years ago
What are three main sources of genetic variation in organisms?
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1- Mutation

2- Gene Flow

3- Sexual reproduction

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A pure-breeding, tall pea plant with white flowers is crossed with a pure-breeding, short plant with red flowers. The F1 plants
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Answer:

Null Hypothesis -

The observed frequency is approximately equal to the expected frequency of phenotype.

Explanation:

Pure Breeding Cross - TTww x ttWW

Genotype of offspring in F2 generation - TtWw

Null Hypothesis -

The observed frequency is approximately equal to the expected frequency of phenotype.

The chi square analysis is attached

The degree of freedom for this question is 3

The p value for X^2 estimated through chi square test is 0.5

Hence the null hypothesis is accepted.

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