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never [62]
3 years ago
5

Explain how natural springs, hot springs, and geysers differ. (Best answer gets brainliest)

Biology
1 answer:
IRISSAK [1]3 years ago
4 0
In hot springs the rising superheated water is cooled below the boiling point by groundwater before reaching the surface. In geysers the superheated water collects in underground pockets.
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How do fish maintain depth in water
GREYUIT [131]

For a fish to be buoyant, or float, it must displace less water or the same amount of water as its own body mass. ... Many fish use swim bladders to help them with quick depth changes. These bladders fill with air to help fish rise or release air so fish can sink, often in conjunction with forward movement.

6 0
3 years ago
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What is the role of glucose in catabolite repression? What is the role of glucose in catabolite repression?
Ierofanga [76]

Answer:

It decreases the levels of cAMP in the cell, repressing transcription from the lac operon.

Explanation:

When glucose is absent, cAMP serves as coactivator binds to CRP, the catabolite gene activator protein. The CRP-cAMP complex binds to the site near the lac promoter and stimulates the expression of the operon by RNA polymerase many folds.

Catabolite repression refers to inhibition of the synthesis of enzymes of lactose catabolism when glucose is present as an energy source. In the presence of glucose, synthesis of cAMP is inhibited resulting in its lower cellular concentration. The lower cAMP levels do not allow the binding of cAMP and CRP. The result is reduced expressed of lac operon.

4 0
3 years ago
What happens when a photon of light hits photosynthesis
Aliun [14]
A photon of light hits chlorophyll, causing an electron to be energized.
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5 0
3 years ago
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List five factors or behaviors that affect cholesterol levels in the body, how these factors affect cholesterol levels, and whet
anyanavicka [17]
Hey there,
Q1 & Q2) 
1) Heredity- Genes carry genetic information for cholesterol. So, it can be passed down from your parents.
2) Diet- Cholesterol depends on the food you eat. If you eat food with too much saturated fat, you get a high level of cholesterol. 
3) Weight- If you are obese, you are more prone to get cholesterol. Thus, you need to lose weight
4) Exercise- Exercise regularly to maintain a perfect cholesterol level
5) Stress- If you are a student, take breaks in between study timings to keep you less stress or if you are an adult, go for walks and do something that you like the most to calm your brain down.

Q3) Cholesterol causes plague to grow in your hearts. This thick, hard plague will block the arteries and will cause heart attacks and strokes. 

Q4) Pros- <span>Helps maintain healthy cholesterol levels, lowers risks of heart attacks and strokes
       Cons- C</span><span>ould create too many HDL leaving not enough cholesterol for the body to be healthy.

Hope this helps :))

~Top
</span>
7 0
3 years ago
Researchers hypothesized that cocaine is pharmacologically active in primate fetal brain when pregnant primates are administered
pav-90 [236]

Answer:

Option A, Glucose metabolism in the fetal brain increased

Explanation:

Usage of cocaine during pregnancy is prohibited. However, in case if cocaine is taken it disrupts the metabolism as it increases brain glucose metabolism to the level of an adult human being. Since glucose metabolism in brain is a sensitive process, any disruption in it can lead to unaccounted effects such as dysfunctional circulation, and pharmacological effect. Cocaine increases the dopamine by blocking the dopamine transporters thereby increasing the Vmax. Since the brain of a child has all kind of neurochemical components, cocaine intakes by a pregnant woman produces reinforcing effects in brain of fetus and also make it pharmacologically active

Hence, option A  is correct

6 0
3 years ago
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