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2 years ago

Which substance on the plasma membrane helps identify chemical signals from outside the cell?

Biology

1 answer:

vodomira [7]2 years ago

3 0

Answer:

The correct answer is carbohydrate chain.

Explanation:

Plasma membrane contain various proteins such as peripheral proteins,transmembrane proteins,GPI anchored proteins.Among them some protein contain carbohydrate chain basically oligosaccharide chain which is arranged in the extracellular portion of the plasma membrane.

The principle function of these oligosaccharide side chains is to detect various chemical and biochemical signals from outside the cell .

For example integrin is a glycoprotein that detect the signal for communicating with the adjacent cells.

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Why are the interactions and tissues in the menstural cycle considered to be feedback mechanisms

mamaluj [8]

it is considered feedback mechanisms because the menstrual cycle only happens when the hormone is released, it causes the target tissues to react, that reaction is the feedback.

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3 years ago

When trying to determine the rate of cellular respiration (an aerobic process), why is oxygen measured and not carbon dioxide

dusya [7]

Since both aerobic and anaerobic processes can result in the production of CO2, we couldn't be certain that cellular respiration was occurring.

Carbon dioxide:

Carbon dioxide is released during cellular respiration as a waste product. Cells that are capable of photosynthesis can utilize this carbon dioxide to create new carbohydrates. Additionally, oxygen gas is necessary to act as an electron acceptor during the process of cellular respiration.

There are two types of cellular respiration: aerobic (occurring when oxygen is present) and anaerobic (in absence of oxygen).

Now, carbon dioxide is emitted as a byproduct in both types of respiration.

Therefore, determining the rate of aerobic cellular respiration by measuring the amount of carbon dioxide emitted is impossible.

Therefore, to obtain the precise rate, we monitor oxygen rather than carbon dioxide.

Therefore, the correct response is that CO2 is created during both aerobic and anaerobic processes; we were unable to confirm if cellular respiration was occurring.

Learn more about carbon dioxide here brainly.com/question/20478740

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2 years ago

Plz help me I will give u like plus follow u

Zarrin [17]

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2 years ago

Read 2 more answers

PLEASE HELP! WILL GIVE BRAINLIEST AND POINTS!

natulia [17]

Answer:

A. Lancelet

B. All chordates

Explanation:

A. Dorsal nerve chord is the only unique feature among all members of phylum chordata (mainly found in subphylum Vertebrata). In the given list, only lacelet is the Chordate whereas snail belongs to phylum Mollusca, grasshopper belongs to Arthropda, and jellyfish belongs to Cnidaria. Dorsal nerve cord runs along the length of organism's body.

B. Gill slits are opening structures to gills through which water passes from pharynx/throat to exterior. Their main purpose is to help filter the food particles available in surrounding water. Although they are typical for amphibians and fishes, chordates also possess gill slits at embryonic stages.

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3 years ago

A crayfish’s swimmerets are used only for swimming. a. True b. False

marta [7]

Its false because lobsters have swimmerets as well and they dont use them only for swimming

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3 years ago