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nataly862011 [7]
3 years ago
8

DNA is the genetic material that makes up living things, and folic acid plays an important role in the formation of DNA. Jon wan

ts to study the effect of folic acid on DNA formation in microbes. Which statement accurately describe the variables in this study?
A.
The amount of folic acid and DNA synthesized are both dependent variables.
B.
The amount of folic acid and DNA synthesized are both independent variables.
C.
The amount of folic acid is the independent variable, and the DNA synthesized is the dependent variable.
D.
The amount of folic acid is the dependent variable, and the DNA synthesized is the independent variable.
E.
The amount of folic acid and DNA synthesized are neither dependent nor independent variables.
Biology
1 answer:
Aliun [14]3 years ago
4 0
D is the correct answer
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Answer:
It would swell and then burst

Explanation:
If a unicellular organism is surrounded by a hypotonic solution it would swell and burst. This is caused by the fact that hypotonic substances prefer to go into substances with a higher solute (The unicellular organism). If the hypotonic solution would enter into the organism it would swell up and burst.
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Q2. Fill up:
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(a) The serum is the plasma without <u>clotting</u> factors.

(b) Phagocytic cells are <u>neutrophills</u> and monocytes.

(c) Eosinophils are linked with <u>allergic</u> reactions.

(d) In clotting, <u>calcium</u> ions play an important role.

(e) In an ECG, one can determine the heartbeat rate by counting the number of <u>QRS complex</u>.

<h3>EXPLANATION:</h3>

»» Blood without blood corpuscles is called plasma and plasma without clotting factors is called serum.

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»» Eosinophils are associated with allergic reactions.

»» Calcium ions play a significant role in clotting.

»» When the cardiac rhythm is regular, the heart rate can be determined by the interval between two successive QRS complexes.

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2 years ago
While we usually think of fever as a bad thing, a fever is actually signifying that an immune response is progressing! Overall,
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Answer:

E. Interleukin-1

Explanation:

Interleukin-1 is produced by macrophages and is involved in promoting the proliferation of helper T cells. Interleukin-1 also acts on the hypothalamus to cause fever. Fever refers to abnormally high body temperature. During infection and inflammation, the hypothalamic thermostat is reset in response to interleukin-1 resulting in fever. The presence of certain bacterial toxins in the body triggers the release of interleukin-1 from macrophages and the body temperature is elevated. Fever inhibits the growth of some microbes, intensifies the effects of interferons, and stimulates the body's immune reactions.

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3 years ago
The researchers set up experimental and control microcosms, or small artificial ecosystems, to measure the release of minerals f
Rudik [331]

Answer:

The correct answer is - Control microcosms did not contain living moss, while experimental microcosms did contain living moss.

Explanation:

The difference between the control microcosms and experiment Microcosms is, the presence of the living moss in the experimental group whereas the control group does not contain living moss.

The independent variable in this research setting is the presence or absence of the living moss and for the control group, the mosses are filtered out and only added the water.

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When cells in a body are not working properly and normally, they cause disruption in the body homeostasis.

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