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Alisiya [41]
3 years ago
14

Letter A in the kidney indicates a structure known as

Biology
1 answer:
ExtremeBDS [4]3 years ago
4 0
D) A Bowman’s capsule
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When the polymerase chain reaction (PCR) is used to amplify segments of DNA, the sample is first heated, and then cooled, in cyc
baherus [9]

Answer:

At least 17 PCR cycles or 16 PCR cycles

Explanation:

As we know -

In one chain of  heating and cooling  of polymerase chain reaction (PCR), the strands of DNA gets doubled.

The general mathematical representation of this is

{2^n - (2 *  n)}

where "n" is the number of PCR cycles.

It is given that DNA strands  to be produced is 16 times the original quantity of DNA.

So the PCR cycle must be carried out at least 17 times in order to have DNA strand not less  than 16 times the original quantity of DNA

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3 years ago
The energy needed for active transport is usually supplied by
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The mitochondria! (Which is the powerhouse of the cell)
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Allergic responses to inhaled antigens occur when an individual is first sensitized to the antigen (i.e., the allergen), inducin
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Allergic responses to inhaled antigens occur when an individual is first sensitized to the antigen (i.e., the allergen), inducing an immune response and then has a subsequent exposure to the same antigen. The sensitization phase is characterized by <u>Induction of a CD4 T cell type II immune response</u>.

The process by which your body becomes sensitive to a particular substance is called sensitization. When your immune system becomes sensitized to an allergen, you can develop certain symptoms.

Antigens that can induce an allergic response are called allergens, and they are often derived from non-infectious or non-microbial sources.

To learn more about allergy and sensitization, here

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5 0
2 years ago
Which of the following factors can influence advances in science and technology?
NARA [144]
Advances in science and technology can be affected by a number of factors such as:
<span>1) the values and attitudes of people within a society 
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3) the technological limitations of a society
4) the social and economic needs of a society</span>
7 0
3 years ago
Which phrase describes the study of ecology?
djyliett [7]
<span>"D.how living things are interconnected with their environment</span>" is the correct answer. Ecology has to do with systems of environments as a whole, and the organisms that live there.
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