How do cells regulate the activity of the enzymes?

1 answer:

3 0

<span>They use inhibitors which can either be competitive or non-competitive. This essentially turn the enzyme on and off.</span>

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A(n) __________ is the preserved or mineralized remains (teeth, bones, etc.) or imprint of an organism that lived long ago.

lutik1710 [3]

The correct answer for the question is B. Fossil.
Fossils are remnants, traces of animals or plants, from the past ages that have been preserved. Fossils may be classified as cast and mold fossil, insect preserved in amber, petrified wood, compression fossil of a fern and pyritized ammonite.

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Whats a vascule bundle?

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Select all the correct answers

natali 33 [55]

Examples
High respiration rates from mass global population
Deforestation

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Matings between individuals from the two populations of Rhagoletis produce hybrid flies that appear to be healthy and have norma

Mama L [17]

<h2>The correct answer is : C.</h2>

Explanation:

According to the question, mating between two populations of Rhagoletis produce hybrid flies.
This means that the two population is present in the same habitat or locality, hence they are capable of coming in contact with each other and mate. Hence, the answer cannot be Habitat Isolation.
Mating produces hybrid flies. This is possible when the gametes (egg and sperm) of the two different populations are capable of capable of coming close to each other and undergoing fusion (fertilization). Hence, there is no Mechanical Isolation.
The zygote formed by the above fertilization is capable of developing into healthy hybrid flies with normal life span. Hence, Pre-zygotic Isolation is absent.
But the hybrid flies formed are sterile and not fertile, that is, they are incapable of producing viable gametes which can undergo fertilization and produce a new offspring.Therefore, the eggs laid by the hybrid flies hatch less often. Hence, there is existence of Reduced hybrid fertility.

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A scientist asks a question and discovers that increased temperature decreases the number of offspring that an organism produces

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A scientific question is a question that is based on observations and that is testableThe scientist asks a new question about the impact of climate change on the species because the results of the investigation led to new scientific questions. Correct answer: C

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