BIOLOGY HIGH SCHOOL

Arteries gradually constrict between each heartbeat. This would allow for which of the following? A. Blood pressure would drop during a heartbeat.
B. Blood pressure would increase between heartbeats.
C. Blood flow would be temporarily blocked between heartbeats.
D. Blood volume would increase between heartbeats.

Answers

Answer 1
Answer:

Answer:

The correct answer is option A, Blood pressure would drop during a heartbeat

Explanation:

When the arteries get constrict, the walls of arteries reduces  the space/volume  with in the arteries which causes blockage for a very minute time period. When the flow is blocked the blood pressure increases, while when the walls are released the pressure reduces but the flow increase.  

This process is also refered to as Vasoconstriction and it is a normal process which stabilizes the blood pressure.  
Answer 2
Answer: The right answer for the question that is being asked and shown above is that: "C. Blood flow would be temporarily blocked between heartbeats."Arteries gradually constrict between each heartbeat. This would allow for blood flow would be temporarily blocked between heartbeats.

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If a plant's leaves increased in surface area, which of the following would not happen?Select one:a. The plant would be able to absorb more sunlight.b. The plant may lose water too quickly.c. The plant may increase the rate of photosynthesis.d. The plant will draw water up more slowly.

Which of the following is a true statement about tectonic plates?a.they located in the molten layer beneath the earth first.
b.all tectonic plates are located at the earth's core
c.they're located approximately 10 meters below the surface of the ocean.
d.all of the earths landmass rests on tectonic plates.

Answers

The true statement is - d. all of the earth's landmass rests on tectonic plates.

The Earth’s lithosphere is a rigid outer part of the earth comprise of crust and top or upper mantles. The lithosphere is made up of tectonic plates. It constitutes all floor plates including oceanic floor plates and continental plates.

  • The tectonic plates are present on the top of the hot molten layer of the mantle.
  • It starts at the seafloor of the ocean.
  • As it is the part of the lithosphere it all landmasses rest on tectonic plates
  • Tectonic plates contain sediments that contain information about the Earth’s history

Thus, the true statement is - d. all of the earth's landmass rests on tectonic plates.

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I would go with D as it is closest to correct. Every part of the surface of the Earth is a tectonic plate though. The plates vary in thickness, but all of the surface of the Earth is made up of tectonic plates, including the parts under the ocean. Technically, the Earth's landmass does not rest on the tectonic plates, it IS the tectonic plates, but it is the closest to correct here in my opinion.

How do the products and reactants of a chemical change compare?The mass of the products is greater than the mass of the reactants because energy is taken in by the reaction.

The mass of the products equals the mass of the reactants because the same matter is present.

The mass of the products equals the mass of the reactants because there is no energy involved in the reaction.

The mass of the products is less than the mass of the reactants because energy is given off by the reaction.

Answers

The correct answer for this question is "The mass of the products equals the mass of the reactants because the same matter is present."

All chemical reactions follow the Law of Conservation of Mass which states that mass cannot be created nor destroyed. This means that mass is constant before and after a process. If ever it seems like the mass is not the same, it is possible that the missing mass was converted to something else.

Which of the following if added to this sequenceA—G—A—T—G—C—G—A—G—T—T—A—C—G—G

might create an insertion mutation?

A.a fat molecule

B.a sugar molecule

C.a DNA molecule

D.an A, G, T, or C

Answers

D nucleotide insertions cause mutations

How many chambers does the heart contain?
A. 3
B. 4
C. 5
D. 6

Answers

The heart contains four chambers: upper left atria, upper right atria, lower left ventricle and the lower right ventricle. Oftentimes, the right atria and right ventricle are together referred to as the "right heart" and the left atria and left ventricle are referred to as the "left heart", however there are still four separate chambers.

Final answer:

The human heart has four chambers, which consist of two atria and two ventricles, working together to pump blood to the lungs and the rest of the body.

Explanation:

The human heart contains four chambers: two atria and two ventricles. The atria, located on the top, are the chambers that receive blood. The ventricles, located on the bottom, are the chambers that pump blood out of the heart. This structure allows the heart to pump blood to both the lungs and the rest of the body in a very efficient way.

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A comet is a A. meteoroid that travels through Earth’s atmosphere and hits the surface.
B. meteoroid that burns up in Earth’s atmosphere, producing a streak of light.
C. small, rocky object that orbits the Sun and is usually found in a belt between the orbits of Mars and Jupiter.
D. small object made of ice and dust that orbits the Sun and forms a coma as it approaches the Sun.

Answers

The answer would be A. meteoroid that travels through earths atmosphere and hits the surface.

What would most likely happen to the carbon cycle if there were no more plants on Earth?C D
оооо
O Animals would consume more carbon.
More carbon would be released from fossil fuels.
O Carbon would build up in the atmosphere.
Animals would perform more photosynthesis.

Answers

Answer:

Carbon is released into the atmosphere Carbon-based macromolecules are found in all life forms

Explanation:

Carbon would build up in the atmosphere. hope this helps you :)

Answer:

C (carbon would build up in the atmosphere)

Explanation:
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