Cell Membrane

Based on your knowledge of osmosis, which statement BEST describes osmosis correctly?

• Osmosis moves only water across the cell membrane without using cellular energy.

• Osmosis moves water and sugars across the cell membrane without using cellular energy.

• Osmosis moves only water across the cell membrane while using cellular energy.

• Osmosis moves only solutes across the cell membrane while using cellular energy.

The difference between active and passive transport is that....

• passive transport requires energy to move molecules up a concentration gradient, active does not.

• passive transport can only move specific particles across a membrane, active can move any particle.

• active transport requires energy to move molecules up a concentration gradient, passive does not.

• active transport moves molecules in animal cells, passive transport moves molecules in plants

Bill's grandmother is making pickles. She puts slices of fresh cucumber into a solution of sugar, salt, and vinegar. The cucumber slices get smaller. What type of solution is the sugar, salt, and vinegar?

• isotonic

• hypotonic

• diatonic

• hypertonic

A cell has a 5% starch content. It is then placed into a hypotonic solution. Which of the following could be the starch concentration of the hypotonic solution?

• 1%

• 10%

• 5%

• 50%

Which of the following statements about endocytosis is correct?

• Endocytosis does not require energy

• Endocytosis can take in a particle of food by surrounding it with the cell membrane

• Endocytosis can remove undigested food enclosed in a vesicle that fuses with the cell membrane

• Endocytosis uses transport proteins to bring in molecules through the cell membrane

When does diffusion occur across a cell membrane?

• When the concentration of particles is different on each side of the membrane

• When the concentration of particles is different on each side of the membrane

• When there are no particles on either side of the membrane

• when water moves across the membrane

Which of the following TWO processes require energy?

• osmosis

• exocytosis

• diffusion

• facilitated diffusion

• Sodium Potassium Pump

Why would an animal cell burst if it is surrounded by fresh water?

• because solutes will move out of the cell

• because water will move out of the cell

• because solutes will move into the cell

• because water will move into the cell

What type of solution is this?

• Hypotonic

• Hypertonic

• Isotonic

• Endocytosis

Which two substances would animal intestinal cells most likely take in via simple diffusion?

• Glucose

• Calcium Ions

• Oxygen

• Carbon Dioxide