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Basile [38]
3 years ago
6

In fetal circulation, the __________ bypasses the liver and the __________ bypasses the lungs. ligamentum venosum; ligamentum ar

teriosum foramen ovale; ductus venosus ductus arteriosus; ductus venosus ductus venosus; ductus arteriosus ligamentum arteriosum; foramen ovale
Biology
1 answer:
pochemuha3 years ago
3 0
In fetal circulation, the ductus venosus bypasses the liver and the ductus arteriousus bypasses the lungs. Ductus arteriosus also called ductus botalli is a blood vessel connecting the main pulmonary artery to the  proximal ascending aorta. It does allow most of the blood from right ventricle to bypass the fetus's fluid-filled non-functioning lungs. Ductus venosus on the hand allows oxygenated blood from the placenta to bypass the liver. 
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chromosome 7 may lose an end piece resulting in williams syndrome. this is an example of a chromosomal
serious [3.7K]

Chromosome 7 may lose an end piece resulting in Williams syndrome, which is an example of a chromosomal deletion.

<h3>What is a chromosomal deletion?</h3>

A chromosomal deletion can be defined as a chromosome rearregement due to the loss of a fragment of the sequence of one chromosome, which leads to the loss of genetic material.

In conclusion, Chromosome 7 may lose an end piece resulting in Williams syndrome, which is an example of a chromosomal deletion.

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6 0
1 year ago
Which of the following statements about secondary production is false!
hoa [83]

The statement about secondary production that is false is option c. Generally, an individual's production efficiency will decline as the C:N ratio of its food increases.

<h3>When is productivity and efficiency present?</h3>

Productive efficiency states that it is not possible to generate more of one good without producing less of another good given the inputs and technology at hand.

Note that Production efficiency is a word used in economics to describe the point at which an economy or other entity can no longer produce more of one good without reducing the level of production of a different one.

Hence, It's more important to focus on the caliber of your job than just the pace. Therefore, you have achieved improved production efficiency if your company increased its output from 1,000 bags to 1,500 bags of coffee while generating less waste, spending less money, and utilizing fewer resources.

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3 0
1 year ago
Which of the following statements about DNA is FALSE?
Gwar [14]

Answer:

A) The two strands of a DNA molecule are parallel and complementary.

Explanation:

DNA is a polymer of nucleotide and this nucleotide are made up of a deoxyribose sugar molecule, a nitrogenous base, and a phosphate group. In DNA genetic information of the cell is stored in the form of nitrogenous bases.

DNA is double-stranded and both the strands run anti-parallel with each other.  This anti-parallel orientation provides the nitrogenous base of one strand to form hydrogen bonds with the nitrogenous base present on the opposite strand.

In DNA adenine base pairs with thymine with two hydrogen bonds and guanine base pairs with cytosine with three hydrogen bonds. So the false statement is A.

3 0
3 years ago
When your Math teacher was handing out the test, you noticed that your respiration rate and heartbeat increased, your palms got
Papessa [141]

Answer:

My pretest behaviors were triggered by the sympathetic nervous system, while my body returned to its normal state by the way of the parasympathetic nervous system, after the test.

Explanation:

The sympathetic nervous system and the parasympathetic nervous system are part of the autonomic nervous system. The main function of the autonomic nervous system is to regulate the heart, kidneys, and liver which are not under voluntary control. The regulation of the body’s unconscious actions is executed through the sympathetic and the parasympathetic nervous system.

Upon exposure to stressors or threats, the sympathetic nervous system is triggered. Epinephrine and norepinephrine are then released, causing acceleration of the heart, constriction of blood vessels, increase in blood pressure, profuse sweating and other related responses against stress. The sympathetic nervous system controls all these involuntary responses that could be termed “fight-flight-or-freeze” response.

On the other hand, the parasympathetic nervous system initiates what is termed “rest and digest” response, which occurs immediately after the “fight-flight-or-freeze” phase response to stress is over. The body is returned to its normal state by the parasympathetic nervous system. The parasympathetic nervous system releases acetylcholine, which regulates the function of the body during a period of rest or recuperation.  

5 0
3 years ago
I need to know what a mutation is and how it can affect living things.
anyanavicka [17]

Answer:

A Mutation is when a DNA gene is damaged or changed in  a way that changes the genetic message carried by that gene.

Explanation:Mutations are sometimes good and sometimes bad it can also cause genetic variation which increases the survival of a species

3 0
3 years ago
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