water molecule Chapter 8 quiz questions

1. When put into distilled water, a red blood cell will:

Inflate until it pops

Stay the same

Shrink (Crenate)

Double in size and then stay that way

Distilled water is hypotonic, and therefore has a higher concentration of water than red blood cells. Therefore, water will diffuse into the red blood cells, causing them to expand. Because the concentration of water in distilled water is 100%, water will never cease to diffuse in, because the concentration will never be equal. Thus, water will continue diffusing in until the cell pops

Explanation

Distilled water is hypotonic, and therefore has a higher concentration of water than red blood cells. Therefore, water will diffuse into the red blood cells, causing them to expand. Because the concentration of water in distilled water is 100%, water will never cease to diffuse in, because the concentration will never be equal. Thus, water will continue diffusing in until the cell pops

2. Match the select parts of a cell during mitosis:

Letter A

Letter G

Submit

3. Passive transport uses __________ to allow particles to move ___________ the concentration gradient (energy/no energy) (against/with)

Passive transport is a type of cellular transport that does not require the input of energy. It relies on the natural movement of particles from an area of higher concentration to an area of lower concentration, which is known as moving "with" the concentration gradient. Therefore, the correct answer is "no energy, with."

Explanation

Passive transport is a type of cellular transport that does not require the input of energy. It relies on the natural movement of particles from an area of higher concentration to an area of lower concentration, which is known as moving "with" the concentration gradient. Therefore, the correct answer is "no energy, with."

Submit

4. Active transport uses __________ to make particles to move ___________ the concentration gradient (energy/no energy) (against/with)

Active transport uses energy to make particles move against the concentration gradient.

Explanation

Active transport uses energy to make particles move against the concentration gradient.

Submit

6. Osmosis: In which direction would water molecules move in the above illustration?

Side A --> Side B

Side B --> Side A

No movement of water molecules

Movement in both directions to maintain the current equilibrium

Water will diffuse from an area of higher concentration of FREE water molecules (Side A = 19) to an area of lesser concentration of FREE water molecules (Side B = 7).

Explanation

Water will diffuse from an area of higher concentration of FREE water molecules (Side A = 19) to an area of lesser concentration of FREE water molecules (Side B = 7).

Submit

8. Movement of particles from an area of high concentration to an area of low concentration through a membrane is also known as:

Active transport

Cell membrane pump

Reverse osmosis

Simple diffusion

Simple diffusion involves the movement of particles from an area of high concentration to an area of low concentration through a membrane.

Explanation

Simple diffusion involves the movement of particles from an area of high concentration to an area of low concentration through a membrane.

9. In diffusion, particles move from an area of ______________ concentration to an area of ________________ concentration.

In diffusion, particles naturally move from an area of higher concentration to an area of lower concentration. This is because particles tend to spread out and become evenly distributed. Therefore, the correct answer is "higher lower".

Explanation

In diffusion, particles naturally move from an area of higher concentration to an area of lower concentration. This is because particles tend to spread out and become evenly distributed. Therefore, the correct answer is "higher lower".

Submit

10. What type of membrane protein allows ions to move passively through the cell membrane?

Cell membrane pump

Ion channel

Carrier protein

Vesicle transport

Ion channels allow and control the movement of ions with the concentration gradient(passively), since ions do not easily pass through the phospholipid bilayer of the cell membrane.

Explanation

Ion channels allow and control the movement of ions with the concentration gradient(passively), since ions do not easily pass through the phospholipid bilayer of the cell membrane.

11. When a plant is placed into a salt water (hypertonic) solution, what happens to its cells?

Water enters the cell and the cell membrane pushes against the cell wall creating turgor pressure

Water leaves the plant cell and the cell membranes pulls away from the cell walls

Water enters and leaves cell at the same rate

The plant cells turn purple

the greater dissolved salt content of a hypertonic environment pulls water out of the cell causing the membrane to shrivel, and the plant to subsequently shrivel.

Explanation

the greater dissolved salt content of a hypertonic environment pulls water out of the cell causing the membrane to shrivel, and the plant to subsequently shrivel.

12. Match the pictures to their phase in mitosis or cytokinesis: Image A: