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stepan [7]
3 years ago
9

Purpose of the cell membrane.

Biology
2 answers:
Semmy [17]3 years ago
6 0

Answer:

The primary function of the plasma membrane is to protect the cell from its surroundings. Composed of a phospholipid bilayer with embedded proteins, the plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells.

Explanation: can u give me 5 stars?

zhuklara [117]3 years ago
5 0

Answer: The purpose is to protect the nucleus, and keep all other organelles inside

Explanation   Have a GREAT DAY

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Which of the following terms refers to how genetic traits are expressed?
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Área and perimiter of 9 cm and 11cm​
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A lion has sharp pointed teeth while a buffalo has flat, broad teeth. Why do you think the teeth in these animals differ?
Amanda [17]

Answer:

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4 years ago
Read 2 more answers
The primary source of the specificity of enzymes is ________. The primary source of the specificity of enzymes is ________. thei
Vinvika [58]

Answer:

their shape, which relates to the lock-and-key model

Explanation:

Enzymes are biological catalysts that are proteinous in nature. Their proteinous nature implies that they are made of amino acids, which forms a three-dimensional shape that accounts for their functionality and specificity. This means that enzymes are substrate-specific because of their 3D shape.

The three-dimensional shape of an enzyme determines the kind of substrate it will bind to. Enzymes, generally, catalyze reactions by binding to a substrate at their active site. This binding follows a lock and key pattern or model. In a nutshell, the primary source of specificity of enzymes is attributed to their SHAPE, which relates to the lock-and-key model.

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