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Reptile [31]
4 years ago
6

PLEASE HELP!!!!!!!

Biology
1 answer:
alexandr1967 [171]4 years ago
8 0

Answer:

true

Explanation:

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The major buffer in blood is composed of the weak acid carbonic acid (H2CO3) and its conjugate base, bicarbonate ion (HCO3 - ).
tatuchka [14]

Answer:

The increase in the amount of  carbon dioxide in in blood will lead to respiratory acidosis

Explanation:

Carbon dioxide in its normal level between  38 to 42 mm Hg plays vital roles in the human body like regulating the PH of the human blood, breathing regulation and other things. If the amount of carbon dioxide is high more than the range level, it will cause what is called respiratory acidosis.

Respiratory acidosis is a situation in cause by decrease in ventilation i.e Oxygen level leading to increase in carbon dioxide and drop in PH level of the blood.

6 0
3 years ago
Crossing over happens during A. Anaphase 1. B. Metaphase 1. C. Any phase in meiosis. D. Prophase 1.
postnew [5]
D. Prophase1 because this has to happen first so the rest of the stages can continue with their own events 
3 0
4 years ago
Help help help help me please!!!!!!!!!!!!!!!!
MatroZZZ [7]

The correct answer should be The ability to reproduce only within a species.

3 0
4 years ago
Read 2 more answers
If a person is heterozygous for the Δ32 allele of the CCR5 gene, how many of the four daughter cells produced by meiosis will ha
never [62]

Answer:

The correct option is B: 2

Explanation:

Before meiosis takes place, the entire genetic material within the cell is replicated, this results in 2 copies of the 2n DNA. Since the person is heterozygous for the mutated allele, there is one copy of it present within one 2n set of chromosomes. Two of the 2n chromosomal sets means there would be two copies of it present in total and when the segregation event happens to create haploid cells, two of the cells will inherit the mutated copy.

Hope that answers the question, have a great day!

6 0
3 years ago
How do only certain cells respond to particular signaling molecules that may be sent throughout the body?
zhuklara [117]

Answer:

The presence of specific receptors on the target cells allows them to respond to the signaling molecules.

Explanation:

Signaling molecules move throughout the body but exhibit their effect only on certain cells. This is due to the presence of signaling molecule specific receptors on the target cells. The target cells have cell surface or intracellular receptors to which the signaling molecules bind to generate their effect. The absence of these receptors in other cells does not allow the signaling molecules to exert any physiological response on them.

For example, liver and muscle cells mostly have insulin receptors and respond to the presence of insulin in blood by increased uptake of glucose from the blood.

7 0
3 years ago
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