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- 1. Multiple Choice
The difference between active and passive transport is that
active transport requires energy to move molecules up a concentration gradient, and passive transport does not.
passive transport requires energy to move molecules up a concentration gradient, and active transport does not.
active transport moves molecules in animal cells, and passive transport moves molecules in plants.
passive transport can only move specific particles across a membrane, and active transport can move any particle.
- 2. Multiple Choice
Which of the following scenarios represent examples of osmosis?
Spraying perfume in the air.
Limp celery becomes crisp in water.
Blood vessels transport glucose to cells.
Wrinkled fingers from excessive exposure to water.
- 3. Multiple Choice
Both osmosis and diffusion --
happen only in living cells and tissues.
require energy to move substances.
only move substances from high to low concentration.
require a membrane for substances to move across.
- 4. Multiple Choice
The word homeostasis means --
a reaction that absorbs energy.
ability to maintain and regulate stable internal conditions of the cell.
process modifying the molecular structure of a protein.
a chemical that increases the rate of a chemical reaction without itself being changed by the reaction
- 5. Multiple Choice
One way materials enter and leave a cell is by --
Osmosis
Glycolysis
Cytokinesis
Diffusion
- 6. Multiple Choice
The rate at which molecules, such as water and oxygen, enter a cell is determined by the --
mass of the nucleus.
primary function of the cell.
permeability of the cell membrane.
size of the cell.
- 7. Multiple Choice
What happens to osmotic pressure in a cell if it is placed in a hypotonic solution?
Osmotic pressure decreases because solutes enter the cell by passive transport.
Osmotic pressure increases because solutes exit the cell by facilitated diffusion.
Osmotic pressure increases because solutes exit the cell by facilitated diffusion.
Osmotic pressure increases because water enters the cell by osmosis.
- 8. Multiple Choice
Cells have semipermeable membranes that-
release ATP during the process of cellular respiration.
capture light energy in order to perform photosynthesis.
regulate the movement of material into and out of the cell.
are the organelle responsible for cellular metabolism.
- 9. Multiple Choice
A wilting flower placed in water will be revived as water pressure in the plant cells increases. This change is brought about as a result of what process?
Vessels transporting glucose to cells
Cells pulling in water via osmosis
Carbon dioxide waste eliminated during respiration
Oxygen leaving the cell by transpiration
- 10. Multiple Choice
Sugar molecules can be transported across the cell’s plasma membrane with the help of which biomolecules?
Proteins
Lipids
Carbohydrates
Nucleic acids
- 11. Multiple Choice
The ultimate goal of diffusion is to–
create ATP energy for cellular functioning.
move water from high to low concentrations.
reach a state of solute/solution equilibrium.
break down large molecules for absorption.
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