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kirill115 [55]
3 years ago
9

Which of the following is likely to be researched by a toxicologist?

Biology
2 answers:
n200080 [17]3 years ago
8 0

The answer is D.

Hope it help

Likurg_2 [28]3 years ago
5 0
Most likely D, because pesticides are poisonous to surrounding life.
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in its second messenger role, cAMP activates enzymes called ____________, whose jobs is to regulate other enzymes by adding phos
Anon25 [30]

In its second messenger role, cAMP activates enzymes called kinases, whose job is to regulate other enzymes by adding phosphate groups to them.

<h3>What is a kinase?</h3>

A kinase is an enzyme that catalyzes the addition of phosphate group and thus regulates cell signaling.

Moreover, phosphatases are enzyme that catalyze the removal of a phosphate group in a protein.

In conclusion, in its second messenger role, cAMP activates enzymes called kinases, whose job is to regulate other enzymes by adding phosphate groups to them.

Learn more about phosphatases here:

brainly.com/question/11655948

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2 years ago
Sam’s teacher is trying to model the day/night cycle on Earth. One student holds a large yellow ball to represent the Sun. Anoth
Orlov [11]
Hello!

So, day and night are caused because the earth makes a full rotation on its axis once every 24 hours.

That way, have of Earth is facing the sun (it is morning on that side) and the other half isn't (which is why it is nighttime over there).

For example, if it's nighttime in Canada and America, it's morning in Pakistan and India. This is because Pakistan and India are facing the sun whilst Canada and America are not.

A N S W E R:

The balls should be moved so that half the Earth is facing the sun and the other half is not. This would be 24 hours. As for the sun, it is a gas, not a solid, so it doesn't rotate like one. However, that does not mean that it is not rotating to some extent.
4 0
4 years ago
Read 2 more answers
Which is the most comprehensive ecological unit of the biosphere?
Leni [432]

Biomes

Explanation:

The most comprehensive ecological unit of the biosphere is the biomes.

Biomes are the largest ecological unit of life.

  • They are made up of different population, communities, ecosystems of living organisms and their environment.
  • A biome is an ecosystem made up of common characteristics in the environment they are found.
  • They have internal regularities in the nature and types of fauna and flora found in such areas.
  • Examples of biomes are tundra, rainforest, desert etc

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3 0
3 years ago
I need help in classification in biology
boyakko [2]
With what do you need help in, like the subject to indentify
5 0
3 years ago
Explain why an egg is considered to be unicelular.
Delicious77 [7]

Answer:

membrane and everything else inside is considered the cell, it can be said that it is a single cell. Then, the chicken egg deserves its reputation as the largest cell. If, however you consider the yolk and the albumen (the egg white), separate structures, then eggs are not a single cell.

Explanation:

Short answer: One ovum = one cell = single cell (Latin: unam cellulam), from which we get uni-cellular. ... The zygote resulting from a successful fertilization of a single egg cell (a living unicellular organism), by a single sperm cell (also a living unicellular organism), is also a living unicellular organism

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