Module 4 Review

Based on the concept of passive transport, what happens after a candle is lit in a room?

• Molecules from the candle create scent throughout the room by spreading from the candle to areas of lower concentration.

• The energy from the candle pushes molecules from the candle to areas of higher concentration in the room.

• The candle burns air molecules in the room, replacing those molecules with molecules from the candle.

1. An organism works to maintain a state of optimum (best) conditions at all times. This balance is known as _____.

• Osmosis

• Homeostasis

• Diffusion

Osmosis is the diffusion of what substance?

• Oxygen

• Water

• Salt

Which of the following is not true of passive transport?

• Molecules move from high to low concentrations.

• Osmosis is a type of passive transport.

• Passive transport requires energy in the form of ATP.

1. A freshwater plant is placed in a container of saltwater. What will most likely happen to the cells of the plant?

• They will swell because the water will move into them.

• They will swell because the salt will move into them.

• They will shrink because the water will move out of them.

1. The part of the cell that controls what enters and leaves the cell is the ___.

• Nucleus

• Ribosomes

• Plasma Membrane

1. What would be the best evidence that a cell is using active transport to move a substance across a cell membrane?

• 😆Substances are moving rapidly across the membrane.

• 😋ATP is being rapidly consumed near the membrane.

• 😉Substances are moving from high to low concentrations

1. If energy is needed to move materials into or out of a cell, what is most likely occurring?

• Active transport

• Passive transport

• Osmosis

1. A person with swollen gums rinses her mouth with warm salt water, and the swelling decreases. Which of the following has occurred?

• The swollen gums have absorbed the saltwater solution.

• The saltwater solution lowers the temperature in the gums.

• The water in the cells of the gums has moved out due to a lower concentration of water in the saltwater solution

Shivering to warm up and sweating to cool

down are examples of which of the following?

• Cellular respiration

• Transport

• Homeostasis