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Bio 385 exam1 > Structure and Functions of Membranes and Membrance Protiens. Exam1 > Flashcards

Structure and Functions of Membranes and Membrance Protiens. Exam1 Flashcards

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Biology 101 flashcards
0
Q

What does the lipid bilayer include?

A

Cholesterol and Cardiac Glycosides

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1
Q

What molecules make up most of the Lipid Bilayer?

A

Phospholipid Molecules

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2
Q

What is amphipathic?

A

both water and lipid soluble

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3
Q

What is the model of individual proteins floating about the lipid bilayer called?

A

Singer-Nicholson fluid mosaic model

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4
Q

What is the first major function of cell membrane protiens?

A

Transport

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5
Q

What happens in the first function of a cell membrane protein?

A

A. Protein pores and gated channels
B. Carrier proteins
C. Na+/K+ ATPase enzyme proteins

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6
Q

What is the second major function of cell membrane proteins?

A

Recognition

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7
Q

What happens in the second function of cell membrane proteins?

A

A. Surface glycoproteins as markers

B. Antigen-recognition receptors on immune cells

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8
Q

What is the third major function of a cell membrane protein?

A

Signal Reception

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9
Q

What happens during the third function of cell membrane proteins?

A

Surface protein receptors for hormones, never transmitter and other factors.

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10
Q

What is the fourth function of cell membrane proteins?

A

Attachment

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11
Q

What happens during the fourth function of cell membrane proteins?

A

A. Protein Junctions attach to cell

B. Antigen proteins stick cell to surface crawling, anchoring, association of cells into tissue

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12
Q

What is the fifth function of cell membrane proteins?

A

Generation of Electrical Potential

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13
Q

What happens during the fifth function of cell membrane proteins?

A

Separation of charges/ions causes voltage to develop. Important in explaining actions of nerve, muscle and hair cell membranes.

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14
Q

What is the sixth function of cell membrane proteins?

A

Membrane attached enzymes

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15
Q

What happens during the sixth function of cell membrane proteins?

A

Ex. Nerves attract to muscle so muscle contracts.

16
Q

What happens during the seventh function of a cell membrane protein?

A

Cell shape/Structure

17
Q

What happens during the seventh stage of cell membrane proteins?

A

proteins develop into shapes of rods, tubes and fibers can form.

18
Q

What is the cytoskeleton?

A

framework inside of a cell

19
Q

How many amino acids is a protein made up of?

A

100 amino acids

20
Q

100 amino acids are connected by what?

A

peptide bonds

21
Q

what is a chain of up to 99amino acids called?

A

polypeptides

22
Q

How many different amino acids are there in the human body?

A

21

23
Q

What is a multimeric protein?

A

when several proteins bind together to form a single large assembly

Bio 385 exam1 (10 decks)

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