Chapter 5: Lesson 2

Question 1

Diffusion

Answer 1

The tendency of particles to spread out evenly in an available space

Question 2

In diffusion, through what concentration gradient do particles spread?

Answer 2

From an area of higher concentration of particles to an area of lower concentration of particles

Question 3

Dynamic equilibrium

Answer 3

No net change in concentration

Question 4

Examples of diffusion

Answer 4

Dropping a drop of food coloring into water, perfume being sprayed into an open space

Question 5

Passive transport

Answer 5

Diffusion across a membrane that does not require energy investment

Question 6

Examples of passive transport

Answer 6

The sole means by which oxygen enters your cells and carbon dioxide exits your cells

Question 7

Osmosis

Answer 7

The diffusion of water across a selectively semi-permeable membrane

Question 8

Tonicity

Answer 8

The ability of a surrounding solution to cause a cell to gain or lose a cell

Question 9

Isotonic solution

Answer 9

A solution where the concentration is the same on both sides of a membrane

Question 10

Hypotonic solution

Answer 10

A solution which has a low solute concentration (the solute concentration is lower on the outside of the cell)

Question 11

Hypertonic solution

Answer 11

A solution where there is a high solute concentration (the solute concentration is higher on the outside of the cell)

Question 12

What types of solutions do animals prefer?

Answer 12

Isotonic solutions

Question 13

Osmoregulation

Answer 13

The regulation of osmotic pressure in an organism’s fluids to have homeostasis

Question 14

Osmoconformer

Answer 14

A type of osmoregulation where the internal osmolarity is equal to that of the surrounding sea water

Question 15

Osmoregulator

Answer 15

A type of osmoregulation where they regulate the body’s osmolarity so that it is always consistent

Question 16

Osmonia

Answer 16

An example of osmoregulators which is done with aquatic animals

Question 17

Uricacid

Answer 17

An example of osmoregulators which is done in insects, reptiles, and birds

Question 18

Urea

Answer 18

An example of osmoregulators which is done in mammals

Question 19

Which type of solution do plant cells prefer?

Answer 19

A hypotonic solution, are ok with isotonic solutions, and die in hypertonic solutions

Question 20

Plasmolyzed

Answer 20

When a plant cell is hypertonic

Question 21

Flaccid

Answer 21

When a plant cell is isotonic

Question 22

Turgid

Answer 22

When a plant cell is hypotonic

Question 23

Turgor pressure

Answer 23

Force within the cell that pushes the plasma membrane against the cell wall