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8090 [49]
3 years ago
14

The plasma membrane allows some molecular species to enter and excludes others. It is therefore referred to as a(n) _____ membra

ne.
Biology
2 answers:
lara31 [8.8K]3 years ago
8 0
 ''The plasma membrane allows some molecular species to enter and excludes others. It is therefore referred to as a SEMIPERMEABLE MEMBRAINE.''
snow_lady [41]3 years ago
4 0

Answer: Semi-permeable

Explanation:

The cell membrane are the semi-permeable membranes which are made up of proteins and phospholipids. The semi-permeable membrane causes some molecules or ions to pass through the membrane and protects the other to enter inside. This process avoids harmful ions and molecules to pass enter inside the cell and cause damage to the cell.  This process helps in maintaining the cell metabolism.    

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After a hunt a wolf eats more than it needs at that time. the extra glucose combines to form which substance?​
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8 0
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Please help <br> thank you
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Explanation:

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3 years ago
Which of the following does NOT characterize proteins?
8090 [49]

Answer:

The answer is C) They appear to be the molecular carriers of coded hereditary information.

Explanation:

Why NOT C) They appear to be the molecular carriers of coded hereditary information?

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<h3 /><h3>True of proteins:</h3>

A) They may be denatured or coagulated by heat or acidity.

<u>Denaturation</u> is the <u>destruction of the protein's secondary and/or tertiary structures</u>. The <u>primary structure is not disrupted due to the tough peptide bonds</u> and can only be broken down by acid. For heat denaturation, hydrogen bonds are destroyed, as in cooking of egg whites and medical equipment sterilization.

B) They have both functional and structural roles in the body.

There are many kinds of proteins that have functional and structural roles like hormones <u>(FSH, LH)</u>, antibodies <u>(IgA, IgM),</u> enzymes <u>(lipase, amylase),</u> for storage/transport <u>(hemoglobin, ferritin)</u>, and locomotion <u>(actin, troponin).</u>

D) Their function depends on their three-dimensional shape.

Just like <u>hemoglobin</u>, it's <u>quaternary structure</u> can carry <u>4 molecules of iron</u> in one go. <u>Enzymes</u> are shaped accordingly to fit a<u> specific substrate</u> <em>(lock-and-key model)</em>

6 0
3 years ago
Please help with this
Fiesta28 [93]
I am not exactly sure but I would gn with protein because DNA does not look like that is how the cell is so maybe protein or starch
3 0
3 years ago
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