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Arturiano [62]
2 years ago
10

Which were the earliest oxygen-producing life-forms?

Biology
2 answers:
djverab [1.8K]2 years ago
4 0
A. cyanobacteria is the answer!
s2008m [1.1K]2 years ago
3 0
A is the answer Cyanobacteria I hope this helps
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What is Cross-pollination.​
aliya0001 [1]

Answer:

This is the pollination of a flower with pollen from another flower.

Explanation:

This is under the type of pollination.

Hope it helps.

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3 years ago
explain how a carrier protein can facilitate the diffusion of glucose or other substances into the cell.
Sveta_85 [38]

Specific chemicals are bound by carrier proteins and transferred on one side of the membrane. The conformational changes they go through next enable the molecule to cross the membrane and exit on the other side.

How carrier protein facilitate the diffusion?

When a molecule diffuses, it usually moves from a high concentration location to a low concentration area until the concentration is the same everywhere in the space.

Contrary to channel proteins, another form of membrane transport protein that is less selective in the molecules it transports, carriers are proteins that move a particular material through intracellular compartments, into the extracellular fluid, or across cells. Carrier proteins are found in lipid bilayer cell structures such cell membranes, mitochondria, and chloroplasts, just like other membrane transport proteins.

Therefore, carrier proteins can facilitate the diffusion of glucose or other substances into the cell.

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brainly.com/question/94094

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6 0
1 year ago
. What is the first step of thermonuclear fusion within the Sun to form helium-4?
torisob [31]

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5 0
2 years ago
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Explain using the following words describe how one phrase or word includes all of the rest of the words: trophic level, food cha
coldgirl [10]
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6 0
3 years ago
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