What happens to pulse rate with increased exercise? Why?

1 answer:

8 0

The heart must beat faster during exercise because by increasing the heart rate, the body is able to increase cardiac output and deliver the necessary blood flow to the muscles. During exercise the body's muscles increase their activity level and consume more oxygen.

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Plants are capable of using nitrogen directly from the atmosphere. a. True b. False

Phoenix [80]

The answer is B.False

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4 years ago

What is the relationship between Earths orbit around the sun and the force of gravity.

monitta

Answer:

Explanation:

the relationship is that if the sun stopped spinning, the earth would fly off into space and so the earth needs the suns gravity to keep us alive ^^

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3 years ago

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Competition between members of the same species is called _____________, while competition between members of different species

irina1246 [14]

According to the research, the correct option is a. Competition between members of the same species is called intraspecific competition, while competition between members of different species is called interspecific competition.

<h3>What is Competition?</h3>

It refers to a specific type of relationship between living beings or the interaction between members of the same biological population or of more populations for the same environmental resource, that is, in which both compete for the benefit, instead of collaborating for the mutual good.

Intraspecific competition corresponds to the dispute between individuals of the same species for one or more resources of the environment and different species (interspecific).

Therefore, we can conclude that according to the research, the correct option is a. Competition between members of the same species is called intraspecific competition, while competition between members of different species is called interspecific competition.

Learn more about Competition here: brainly.com/question/9779923

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2 years ago

What’s the step labeled “B” in the cell cycle

scZoUnD [109]

Explanation:

Body

the answer may be body

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3 years ago

A gene that encodes a protein necessary for a cell to stop at checkpoints is an example of a(n) tumor-suppressor gene. growth fa

konstantin123 [22]

The right answer is a tumor-suppressor gene.

Tumor suppressor gene has a role in the cell cycle to stop it at checkpoints, in order to verify that everything is okay in the cell and there's no DNA damage, if there's a DNA lesion, the cell must repair it before resuming its cycle. If there's no problem with the genetic material, the cell will proceed its cycle.
If these tumor suppressor gene is unfunctionnal, mutations will happen during the cell cycle withou being repaired, so it lead to a formation of tumors, and that is why it is called so.

These checkpoints happen specifically in G1 and G2 phases.

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3 years ago