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Trava [24]
1 year ago
6

The use of DNA in the process of classifying organisms is known as.

Biology
1 answer:
AlladinOne [14]1 year ago
7 0
B. molecular systematics
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What prevents blood movement from left ventricle to left atrium​
irina1246 [14]

The Mitral valve which is also known as left atrioventricular prevents blood movement from left ventricle to left atrium.

Explanation:

  • Human heart is four chambered.
  • Two of these are receiving chambers known as atria and the other two are distributing chamber known as Ventricles.
  • Atria are superior chambers and ventricles are inferior chambers.
  • The heart has four valves broadly grouped as Atrioventricular valves and Semi lunar valves.
  • Atrioventricular valves allows flow of blood from atria to ventricle. These are tricuspid valve and bicuspid valve.
  • Semi-lunar valves allow blood to pass out of the heart. These include the pulmonary and aortic valves.
  • The pulmonary valve allows blood to flow from right ventricle  to the heart while aortic valve allows blood to flow from left ventricle to the Aorta.
  • The Tricuspid valve located between the right atrium and right ventricle allows blood to flow from right atrium to the right ventricle.
  • The Bicuspid valve ( Mitral valve)  located between the left atrium and left ventricle allows the blood flow from left atria to left ventricle.
  • Valves maintain the unidirectional flow of blood and thus prevent its back flow.
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3 years ago
Around 97 percent of the water on Earth's surface is ______________________.
saul85 [17]

Answer:

Salt water I think. Mostly oceans right?

Explanation:

4 0
3 years ago
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Cellular (aerobic) respiration taking place on the presence of and with the use of which of the following
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Aerobic respiration is the release of energy from glucose or another organic substrate in the presence of Oxygen. Strictly speaking aerobic means in air, but it is the Oxygen in the air which is necessary for aerobic respiration. ... ATP can provide energy for other processes such as muscle contractions.

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The function of coenzyme A in the citric acid cycle is most like Group of answer choices a limousine driver dropping off a coupl
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Answer:

a limousine driver dropping off a couple at the school prom

Explanation:

The citric acid cycle, also known as the Krebs cycle, is a metabolic pathway by which carbohydrates, lipids and amino acids can be oxidized to carbon dioxide (CO2) and water (H2O). Coenzyme A (CoA) is a key coenzyme in the citric acid cycle. Coenzyme A acts as a carrier of acyl groups: its acetyl-coenzyme A form delivers the acetyl group to the citric acid cycle in order to be oxidized for energy production. During the citric acid cycle, Coenzyme A delivers the acetyl group to oxaloacetate (a four-carbon molecule), in order to form citrate (a six-carbon molecule that contains three carboxyl groups). Subsequently, citrate is oxidized and decarboxylated to produce a succinyl CoA, 2 CO2, and 2 NADH.

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2 years ago
Which of the following summarizes the endocrine system's role? Group of answer choices To carry nerve impulses throughout the bo
g100num [7]

Answer:

To regulate body activities (like growth and immunity) by sending chemical messages                      

Explanation:

Endocrine system: The term "endocrine system" is described as a specific system that is being made up of different glands that tend to secrete and produce distinct hormones, chemical substances that are being produced inside an individual's body is responsible for regulating the activities of different organs and cells. However, the given hormones are responsible for regulating the body's metabolism, growth, and sexual function and development.

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