Test 1- Lecture 2 Flashcards

1
Q

Functions of cells (8)

A
Covering
Lining
Storage
Movement
Connection
Defense
Communication
Reproduction
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2
Q

Example of the function “covering”

A

Epidermal cells in skin

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3
Q

Example of function of “lining”

A

Epithelial cells in small intestine

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4
Q

Example of the function “storage”

A

Fat/liver cells

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5
Q

Example of the function “connection”

A

Collagen fibers in fibroblasts

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6
Q

Example of the function defense

A

Lymphocytes

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7
Q

Example of the function “movement”

A

Muscles cells of heart

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8
Q

Example of the function “communication”

A

Nerve cells

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9
Q

Example of the function “reproduction”

A

Sperm and ooctye cells

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10
Q

Does the prototypical human cell exist?

A

NO!!! It is generalized

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11
Q

3 parts that are in every cell

A

Plasma membrane
Cytoplasm
Nucleus

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12
Q

Is the plasma membrane selectively permeable or completely permeable?

A

Selectively permeable. Only certain things can pass.

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13
Q

Structure of plasma membrane

A

Fluid/flexible bilayer

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14
Q

What is the plasma membrane made of (3)?

A

Lipids
Proteins
Glycocalyx

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15
Q

3 lipids the plasma membrane has

A

Phospholipids (majority)
Glycolipids
Cholesterol

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16
Q

What are phospholipids composed of?

A

Glycerol
Phosphate
2 fatty acids

17
Q

Is the phosphate (head) hydrophilic or hydrophobic?

A

It is hydrophilic

18
Q

Are the fatty acid tails hydrophilic or hydrophobic?

A

They are hydrophobic

19
Q

What are glycolipids composed of?

A

Carbohydrates and lipids

20
Q

Function of glycolipids

A

Adhesion to other cells

Cell recognition

21
Q

Function of cholesterol

A

Stabilizes membrane fluidity with temperature changes

22
Q

What do proteins determine in cells?

A

The function of the cell

23
Q

Where can one find integral proteins?

A

Embedded in the membrane

Remember “integrated”

24
Q

What does transmembrane mean?

A

Can cross the membrane completely

25
Q

Where are peripheral proteins found?

A

On inner or outer surface of membrane

26
Q

Functions of proteins (6)

A
Transport
Intercellular connection
Anchoring skeleton
Cell recognition
Enzyme activity
Signal transduction (outside molecule triggers change inside in inside molecule)