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Artyom0805 [142]
2 years ago
11

Why is the presence of an integral protein necessary for a charged particle, such as an ion, to cross a cell membrane?

Biology
1 answer:
Art [367]2 years ago
3 0

Answer:

Explanation:

Integral membrane proteins are permanently embedded within the plasma membrane. They have a range of important functions. Such functions include channeling or transporting molecules across the membrane. Other integral proteins act as cell receptors

Integral membrane proteins reside within the bilayer membranes that surround cells and organelles, playing critical roles in movement of molecules across them and the transduction of energy and signal

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Scilla [17]

Answer:

The answer to your question is:

Explanation:

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Molecules are tightly packed togheter             saturated

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Most plant fats                                                    unsaturated

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3 0
3 years ago
How many kcal does a food item containing 20 grams of carbohydrate provide?
NISA [10]

Answer:

b. 80

Explanation:

There are about 4 calories per gram of carbohydrates. As such, if 20 grams of carbohydrate are provided, simply multiply 4 calories per gram with the total amount of grams of carbohydrates.

<em>20 grams of carbohydrates</em> x <em>4 calories per gram of carbohydrates</em> = 80 calories total.

Learn more, here:

brainly.com/question/13584986

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Shalnov [3]
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8 0
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yKpoI14uk [10]

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Explanation:

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