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shusha [124]
3 years ago
5

What is unusual about mitochondrial DNA?

Biology
1 answer:
VladimirAG [237]3 years ago
6 0
They take chemical energy from food and make it into ATP!

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1. Write a paragraph of 3-5 sentences to answer the following question. Your answer should demonstrate an understanding of the i
nignag [31]

Answer:

When you sit on a plane for 6 hours without moving, blood accumulates in your veins, and the moment you get up, gravitational forces affect venous return, cardiac output, blood pressure, and venous pressure. That way, when you're sitting on a plane, the gravitational force is the same at the upper and lower extremities, such as the chest, abdomen, and legs, causing venous blood pressure and volume to be evenly distributed throughout the body. However, when one gets up, one becomes dizzy because of abnormal regulation of blood pressure. This is because gravity causes blood to accumulate in the lower extremities (veins of the legs and trunk). This lowers the blood pressure and the blood that the heart pumps. By causing blood to accumulate in the lower extremities, and as venous compliance increases, the veins expand with blood that causes the volume of blood to shift in the veins. This increases the volume and venous pressure in the lower extremities when standing. And the volume of thoracic venous blood is less and less central venous pressure. This leads to a decline in stroke volume. Cardiac output and mean arterial pressure also decrease as left ventricular stroke volume decreases, reducing pulmonary venous return. Decreased standing blood pressure, referred to as orthostatic or postural hypotension. Thus, lowering blood pressure decreases cerebral blood flow, which means less range of blood in the brain causing dizziness.

Explanation:

6 0
3 years ago
True or false the consumption of irradiated food during pregnancy can cause birth defects
guajiro [1.7K]

Consumption of irradiated food during pregnancy can cause birth defects is false.

<h3>What are birth defects?</h3>

Birth defect in pregnancy are the structural or functional abnormalities occur during intrauterine stage. It can be detected either prenatally or in infancy state.

The primary causes are genetic, Socioeconomic, Environmental and other factors.

Chromosomal abnormalities and single gene defects are the major genetic abnormality based birth defects, such as Down syndrome and cystic fibrosis etc.

When parents are related by their blood group can also leads to high risk of rare  genetic birth defects.

Hence, the statement is false

Learn more about birth defect, here:

brainly.com/question/9483070

#SPJ4

8 0
1 year ago
Which of the following shows steps that happen to the chromosomes in Meiosis in the correct order?
lawyer [7]

Answer:

Since cell division occurs twice during meiosis, one starting cell can produce four gametes (eggs or sperm). In each round of division, cells go through four stages: prophase, metaphase, anaphase, and telophase.

7 0
2 years ago
students are measuring the rate of enzyme activity. the graph below shows the rate of enzyme action as they increase the tempera
kykrilka [37]

Answer:

The heat will cause the enzyme to denature(deform) and the subtrate will no longer fit into the enzyme.

8 0
3 years ago
Look at the topographic map of calton hill below which side of the hill is the steepest
Inga [223]

Answer:

Explanation:

Where is the picture?

8 0
2 years ago
Read 2 more answers
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