Cell Transport Mechanisms and Processes

The video tutorial explains how substances are transported into and out of cells through diffusion, osmosis, and active transport. Diffusion involves movement from high to low concentration, osmosis is a special diffusion for water across a membrane, and active transport requires energy to move substances against a concentration gradient. These processes are essential for cells to obtain nutrients and expel waste.

Which of the following is NOT a method by which substances enter and leave a cell?

• Diffusion

• Osmosis

• Active Transport

• Photosynthesis

What is the primary driving force behind diffusion?

• Concentration gradient

• Osmotic pressure

• Active transport

• Cellular respiration

In diffusion, molecules move from an area of _____ concentration to an area of _____ concentration.

• low; high

• high; low

• equal; equal

• random; random

Osmosis specifically involves the movement of which substance?

• Oxygen

• Glucose

• Water

• Carbon dioxide

What is the term used to describe a solution with a high concentration of dissolved substances?

• Isotonic solution

• Dilute solution

• Hypotonic solution

• Concentrated solution

In the viscent tubing example, where is the high water potential located?

• Inside the tubing

• Outside the tubing

• In the air

• In the sugar solution

What is required for active transport to occur?

• Energy from respiration

• Osmotic pressure

• Concentration gradient

• Diffusion

Active transport is used in plant roots to move what type of substances?

• Glucose

• Oxygen

• Minerals

• Water

Which process allows cells to absorb nutrients in the small intestine?

• Osmosis

• Active transport

• Diffusion

• Filtration

Which of the following processes does NOT require energy?

• Exocytosis

• Endocytosis

• Active transport

• Diffusion