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Biology > Properties of Water > Flashcards

Properties of Water Flashcards

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AP® Biology flashcards Biology 101 flashcards
0
Q

Why is the water molecule polar?

A

There is an uneven distribution of electrons between the oxygen and hydrogen atoms.

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1
Q

Is the following sentence true? A water molecule is neutral.

A

True

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2
Q

Attraction between molecules of the same substance is called what?

A

Cohesion

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3
Q

Attractions between molecules of different substances is called what?

A

Adhesion

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4
Q

What is a mixture?

A

A material composed of two or more elements or compounds that are physically mixed together but not chemically combined.

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5
Q

A mixture of two or more substances in which the molecules in the substances are evenly mixed is called a(an)?

A

Solution

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6
Q

The greatest solvent in the world is?

A

Water

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7
Q

What is suspension?

A

A mixture of water and nondissolved material.

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8
Q

What is a substance that is dissolved?

A

Solute

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9
Q

What is a substance in which the solvent is solved?

A

Solvent

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10
Q

What happens during the process of facilitated diffusion?

A

An interval membrane protein assign a specific substances across the membrane.

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11
Q

What is the role of protein channels in the cell membrane?

A

The protein channels are the “tunnels” that allow proteins through the cell membrane.

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12
Q

Facilitated diffusion does not require the cell to use energy. T/F?

A

True

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13
Q

The energy requiring process that loves material across a cell membrane against a concentration difference is called….?

A

Active transportation

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14
Q

T/F: Active transport always requires transport proteins during the process.

A

True

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15
Q

Name the type: Process of taking material into the cell by means of unfolding a or pockets of the cell membrane.

A

Endocytosis

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16
Q

Name the type: “Cell eating” Extensions of cytoplasm surrounding a particle and package it within a food vacuole.

A

Phagocytosis

17
Q

Name the type: The membrane of the vacuole surrounding the material fuses with the cell membrane forcing the contents out of the cell.

A

Exocytosis

18
Q

How does the plasma membrane maintain homeostasis of a cell?

A

Maintains homeostasis by being selectively permeable.

19
Q

Define diffusion.

A

The movement of molecules from an are of high concentration to an area of low concentration.

20
Q

What are the 3 key factors that affect the rate of diffusion?

A

Concentration, temperature, pressure.

21
Q

Diffusion continues until there is no ______?

A

Concentration

22
Q

______ is the diffusion of water across a selectively permeable membrane.

A

Osmosis

23
Q

Hypertonic means: exit/into

A

Exit

24
Q

Hypotonic: exit/into

A

Into

25
Q

Requires energy. Active/Passive.

A

Active

26
Q

Facilitated diffusion. Active/passive.

A

Passive

27
Q

Endocytosis. Active/Passive.

A

Active

28
Q

Requires no energy. Active/Passive.

A

Passive

29
Q

Moves against the concentration gradient. Active/Passive.

A

Active

30
Q

What is the difference between endocytosis and exocytosis?

A

Endocytosis takes material in and exocytosis is when they are released.

31
Q

Diffusion is fast and efficient over long/short distances?

A

Short

32
Q

What is phagocytosis?

A

Cell eating

33
Q

What is pinocytosis?

A

Cell drinking

34
Q

What is isotonic?

A

The concentration of dilutes is the same inside and outside the cell.

35
Q

What is hypertonic?

A

Solution has a higher solute concentration than the cell.

36
Q

If a cell is hypertonic, does it shrink, swell, or stay the same?

A

Cell will shrink.

37
Q

What is hypotonic?

A

Solution has a lower solute concentration than the cell.

38
Q

If a cell is hypotonic, does it shrink swell or stay the same?

A

Cell will swell.

39
Q

Movement of water exits the cell. Hypertonic, Isotonic, or Hypotonic?

A

Hypertonic.

40
Q

Movement of water into the cell. Isotonic, Hypertonic, Hypotonic?

A

Hypotonic.

Biology (2 decks)

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