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Mademuasel [1]
3 years ago
7

Matthew is assigned a project to learn about cellular respiration. He discovers that the Krebs Cycle is a ____ process which occ

urs in the ___?
Biology
1 answer:
deff fn [24]3 years ago
8 0
The Krebs cycle is an aerobic process which occurs in the cell's mitochondria.
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Natural selection changes allele frequencies in populations because some ____ survive and reproduce more successfully than other
Mazyrski [523]
The correct answer is individuals 
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3 years ago
What happened to the Galapagos Finches?
IceJOKER [234]

Answer:

Unavailability of food decrease their population.

Explanation:

The population of Galapagos Finches decreases because of unavailability of food. Galapagos Finches feeds on a specific insects whose population decreases on that Island that leads to the death of the Galapagos Finches and they decrease in number. Positive population  growth occurs only if more food is available to the Finches or they adapt another food item for themselves which fulfill their need of food.

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Answer: A

Explanation:

i took biology and all that fun stuff with trophic levels

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
Closing mines has no economic impact on communities.
VladimirAG [237]

Answer:

False. Closing mines has economic impact on communities.

Explanation:

  • Economy is impacted by any hindrance in activities of production,distribution and consumption of any good or services.
  • So, closing mines too has great impact in economic sector of that certain area.
  • In many countries, mining has been the major source of economy and job opportunities for the community people.
  • Closing these mines results in downfall of economy and increased unemployment in that particular community.
5 0
3 years ago
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