BIOLOGY HIGH SCHOOL

Which best explains the circulation system within mammals?A. Mammals use a closed, double-loop circulatory system aided by a four-chambered heart.
B. Mammals use a closed, single-loop circulatory system aided by a four-chambered heart.
C. Mammals use an open, double-loop circulatory system aided by a four-chambered heart.
D. Mammals use a closed, single-loop circulatory system aided by a three-chambered heart.

Answers

Answer 1
Answer: 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.

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The cellular process of creating two new DNA molecules from one original copy is called replication. Which statement is the BEST description of this process?A: DNA opens up and RNA copies it. B: DNA opens up and completely unwinds to make two new molecules. C: DNA opens up and each strand is used as a template for a new strand. D: is crossed of
True or False? "Wendell Stanley discovered that the tobacco mosaic virus was not an organism, but was chemical in nature."
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One of the first renaissance scientists to use firsthand observations to write about plants

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Answer:

Valerius Cordus

What kind of mollusk includes snails and slugs?

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The answer would be the Gastropoda

The aorta carries blood _____.to the lungs
to the body
to the heart
from the body

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to the body it is an artery

Answer:

Aorta carries blood to the body

Explanation:

Aorta is an artery!

When joints are not regularly moved through their entire range of motion, muscles and ligaments eventually _____. a. shorten b. lengthen c. degenerate d. bend

Answers

Answer:

a. shorten

Explanation:

Inability or failure for joints to move through their entire range of motion is caused by constrictions. These constrictions often results when the excess adipose tissues that surrounds the muscles and ligaments are not in required adequate proportion. These constrictions can be caused by ageing, fatigue, muscular diseases etc. As a result of these constriction in the joints, let say for example, the knee joint, the muscle and ligaments tends to shorten in length.

The ability to resist interference from irrelevant information to stay focused on the task at hand is called:

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I believe the ability to resist interference from irrelevant information to stay focused on the task at hand is called Inhibition
The ability to resist interference from irrelevant information to stay focused on the task at hand is called:Inhibition

How many unique zygotes can a couple make?

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Each person carries 23 pairs of  chromosomes in every cell that makes up their body, with the exception of gametes, which contain 23 SINGLE chromosomes. So when a sperm and egg meet, they then have 23 pairs. In the process of meiosis 'crossing-over' occurs, which means that the chromosomes get "shuffled". This means that the child can receive random traits not only from the parents, but also the grandparents. so there is about  2⁴⁶ possible pairings, excluding the risk for things such as Down-Syndrome

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