Regulating transport of substances in and out of the cell is the

1 answer:

4 0

Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ). Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.

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carbon is released to the armosphear as carbon dioxide when you breath during the process of blank or through the blank of dead

Komok [63]

Carbon is released to the atmosphere as carbon dioxide when you breath during the process of CELLULAR RESPIRATION or through the DECOMPOSITION of dead organisms

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4 years ago

Mason drew the cladogram shown. Which statements best describes the cladogram? Select three options. (HURRY I WILL MARK BRAINLIE

Yuki888 [10]

Answer: Correct options B, D and E.

Explanation:

In the cladogram, we can see that in the first branch we have a division, one branch goes to fish and the other goes to a division (a division means a common ancestor)

Then the fish are the most primitive (being directly related to the first ancestor)., E is true.

We also can see that between fish and birds we have 3 separations (the ancestor in common is 3 "generations" behind), and between frog and birds we have two separations (the common ancestor is 2 "generations" behind), so frogs are more closely related to birds than fish.

So D is also true.

We also can see that the only pair that has only one ancestor in common are birds and reptiles, so the ones that are most closely related are birds and reptiles. B is also true,

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3 years ago

35 year old man comes to the physician because of severe midline back pain during the past 4 weeks. He has gained 8Kg(18lb) duri

Anit [1.1K]

Answer: the correct answer is A. ACTH

Explanation:

ACTH stands for Adrenocorticotropic hormone Adrenocorticotropic hormone (ACTH, also adrenocorticotropin, corticotropin) is an important component of the hypothalamic-pituitary-adrenal axis and is often produced in response to biological stress (along with its precursor corticotropin-releasing hormone from the hypothalamus). Its principal effects are increased production and release of cortisol by the cortex of the adrenal gland. ACTH is also related to the circadian rhythm in many organisms.

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3 years ago

PLEASE HELPPP What organelles do prokaryotes not have? I'm doing an assignment for science and I'm stuck on it.

Svetlanka [38]

Prokaryotes lack a defined nucleus (which is where DNA and RNA are stored ineukaryotic cells), mitochondria, ER, golgi apparatus, and so on. In addition to the lack of organelles, prokaryotic cells also lack a cytoskeleton. Does this help?

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3 years ago

The failure, till now, to produce an effective AIDS vaccine may be due to the fact that the causative agent mutates continuously

Furkat [3]

Answer: A. True.

Explanation:

The AIDS virus may constantly change it's form in the host body by mutating. The body immune system becomes unable to produce antibodies which can fight against these mutated cells.

Also, the vaccination used for the purpose of immunization will not be able to combat will the causative agent in the body of the host. As the vaccine contains the microbe which can fight against the virus present in the body. But as the virus is changing it's form the microbe may not be able to compete with the virus. Hence, the use of vaccine will become useless.

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3 years ago