Which best explains the circulation system within mammals?

1 answer:

3 0

A. Mammals use a closed, double-loop circulatory system aided by a four-chambered hearts.

The four chambered heart of a mammal is divided into two atria and two ventricles. Double-loop circulatory system is used. One loop for oxygenated blood, the other loop for deoxygenated blood.

You might be interested in

Carbon dioxide is fixed into glucose during carbon ?

disa [49]

Answer:

Carbon fixation

Explanation:

In this reaction, carbon dioxide reacts with hydrogen ions formed during the light stage to form glucose.This is a complex process involving several enzyme-catalyzed reactions. The process requires energy which is provided by the ATP formed during the light reactions.

4 0

3 years ago

Read 2 more answers

Forest soils tend to be somewhat acidic. This acidity can be increased with acid rain. Which ion is typically present in soil wi

OlgaM077 [116]

I would go with C. Sulfate

7 0

3 years ago

Read 2 more answers

hershey and chase confirmed that dna, not protein, was the genetic material. how do the results of their two experiments support

Gwar [14]

Hi,

Harshey and Chase did a great experimentation which was basically a two step experiment to prove that DNA and not proteins are the actual carriers of genetic information from parents to offspring.

In the first part of their experiment, they used bacteriophages (virus that eat bacteria). They used radioactively labeled sulphur(35S) medium to grow bacteriophages and observed that all the bacteriophages had proteins with radioactive sulphur(35S).

In the next step they allowed these phages to infect bacteria and to their surprise, they found that the bacteria did not had radioactively labeled sulphur in them because the coat of bacteriophage stays outside the body of bacteria when it attacks it. This proved that DNA not proteins were the hereditary material.

To make their results more reliable, they did a second experimentation in which, they marked the DNA of the phage with radioactive phosphorus 32P. After labeling DNA, they repeated the same experiment and this time, they found radioactive phosphorus inside the bacteria.

This meant that the bacteria had DNA of phage entered inside them and this again proved that DNA not proteins are the hereditary material. You can see attached image for better understanding.

Hope it help!