Cell Membrane- unit 3 Flashcards

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1
Q

The cell membrane provides ____________ to the cell from its surroundings.

A

protection

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2
Q

The cell membrane helps maintain _______________.

A

homeostasis

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3
Q

The cell membrane is _____-_________ to allow materials in or out as needed.

A

semi-permeable

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4
Q

What 2 things is the cell membrane composed of?

A

phospholipids and proteins

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5
Q

The phospholipids are arranged in a bilayer with ____________ heads and ____________ tails.

A

hydrophilic, hydrophobic

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6
Q

What does hydrophilic mean?

A

water-loving

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7
Q

What does hydrophobic mean?

A

water-hating

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8
Q

Homeostasis is also referred to as _________ _____________.

A

selective permeability

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9
Q

What allows materials to move in and out of the cell?

A

Proteins

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10
Q

What do channel proteins form?

A

Form a tunnel

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11
Q

Carrier proteins _______ shape and are also called protein _______.

A

change, pumps

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