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Bio 189 > Chapter 7 Membrane structure and funtions > Flashcards

Chapter 7 Membrane structure and funtions Flashcards

1
Q

Channel proteins

A
  • provide a hydrophilic tunnel through the membrane
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2
Q
A

Channel protein

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3
Q

Form a fluid bilayer
Unsaturated fatty tails maintains fluidity

A

phospholipid

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4
Q

between phospholipid
provides stiffness
keeps membrane fluid and lower temps

A

Cholesterol (steriod)

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5
Q
A

phospholipid

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6
Q
A

Cholesterol (steriod)

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7
Q
A

carrier protein

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8
Q
A

Cell Recognition protein

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9
Q
A

Receptor Protein

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10
Q
A

Enzymatic Protein

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11
Q
A

Junction Protein

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12
Q

Binds to specific substances and change their shape to move a molecule through

A

Carrier proteins

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13
Q

The phospholipid bilayer of the plasma membrane restricts the passage of

A

Ions (Na+, Ca+, K+, Cl-)
polar molecules such as sugars and amino acids

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14
Q

Cell identification

A

Cell recognition protein

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15
Q

Are glycoproteins with sugar chains attahced

A

Cell recognition protein

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16
Q

make organ transplant difficult to achieve

A

Cell recognition protein

16
Q

Helps cells recognize foreign invaders plays a role in the immune system

A

Cell recognition protein

17
Q
A

Cell recognition protein

18
Q

Cell communitcation

A

Receptor proteins

19
Q

Has a specific shape for binding to signal molecules such as a hormone or neurotransmitter

A

Cell recognition protein

20
Q

Faulty receptor proteins can result in disorder such as dwarfism, type II diabetes, and or intersex individuals

A

Cell recognition protein

21
Q
A

Cell recognition protein

22
Q

Catalyst

23
Q

speeds of specific chemical reactions

24
Q

many are embedded in membranes of cells which provide a work surface for metabolic reactions

25
Q
26
Q

Cell adhesions

A

Junction proteins

27
Q

joins cells together to form tissues so they can fulfill a funnction

A

Junction proteins

28
Q

Caridac muscle cells are tightly welded together by junction proteins

A

Junction proteins

29
Q

Membrane carbohydrates:
Branched sugar chains are attached to protein lipids

A
  • Glycoproteins or glycolipids
  • Vary from cell to cell and individual to individual.
30
Q

A lipid with one or more covalently attached carbohydrates.

A

Glycolipid

31
Q

A protein with one or more covalently attached carbohydrates

A

Glycoprotein

32
Q
  • Non-polar molecules: Fatty acid, vitamins (A,D,E,K), steroids
  • Oxygen, Carbon dioxide, water
A

Substances can move through

33
Q
A

Pharephral protein

34
Q
A

Carrier protein/integral protein

35
Q
A

Cholestrol

36
Q
A

Glycoprotein, Carbohydrate/Polysaccharide

37
Q

Ions: Na+, K+, Ca^2+, H+
Polar molecules: Polysaccharides, Amino acid, glucose, Nucleic acids

A

Substances cant move through

Bio 189 (4 decks)

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