Cell Transport

What is passive transport in cell biology?

• The movement of substances against the concentration gradient requiring energy

• The movement of substances along the concentration gradient without requiring energy

• The process by which cells engulf bacteria or large particles

• Energy production within cell organelles

List two examples of passive transport.

• Endocytosis and exocytosis

• Osmosis and diffusion

• Phagocytosis and pinocytosis

• Active transport and facilitated diffusion

What is active transport in cell biology?

• The movement of molecules from an area of lower concentration to an area of higher concentration using energy.

• The movement of molecules from an area of higher concentration to an area of lower concentration without using energy.

• The process by which cells digest large food particles without energy.

• The release of waste products from cells without the use of energy.

Tags

NGSS.HS-LS2-3

List two examples of active transport.

• Sodium-potassium pump and endocytosis

• Diffusion and osmosis

• Photosynthesis and respiration

• Exocytosis and facilitated diffusion

What type of cell transport is depicted in the diagram where molecules move through protein channels and carrier proteins in the cell membrane?

• Active transport

• Passive transport

• Osmosis

• Phagocytosis

Why is the cell transport shown in the diagram considered passive?

• It requires energy in the form of ATP.

• It involves the movement of molecules from an area of lower concentration to an area of higher concentration.

• It does not require energy and involves the movement of molecules from an area of higher concentration to an area of lower concentration.

• It is facilitated by enzymes.

Tags

NGSS.HS-PS1-5

What is the role of carrier proteins in the plasma membrane?

• To facilitate the diffusion of ions

• To provide structural support to the membrane

• To facilitate the transport of specific substances across the membrane

• To catalyze reactions on the membrane surface

Which of the following could be an example of a substance transported by carrier proteins in the plasma membrane?

• Oxygen

• Water

• Glucose

• Steroid hormones

What type of proteins found in the cell membrane bind to signal molecules and allow them to pass into the cell?

• Enzymatic proteins

• Receptor proteins

• Structural proteins

• Transport proteins

What is the primary function of carrier proteins in facilitated diffusion as shown in the diagram?

• To break down molecules into smaller parts

• To provide energy for transport

• To assist in the movement of molecules across the cell membrane

• To synthesize new molecules