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Cell Membrane Transport Mechanisms Quiz

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Questions and Answers

What type of transport mechanism is responsible for deriving salt and sugar (followed by water) into the enterocytes?

Passive transport

Facilitated diffusion

Active transport (correct)

Osmosis

Which of the following is a characteristic of the cell membrane?

Semi-permeable, allowing passage of lipid-soluble substances and preventing passage of water and water-soluble ones (correct)

Impermeable, preventing the passage of all substances

Fully permeable, allowing passage of all substances equally

Permeable to water and water-soluble substances only

In the context of cell membranes, what do proteins (integral or peripheral) act as?

Structural components only

Waste disposal units for the cell

Energy sources for the cell

Channels, carriers, pumps, enzymes, receptors (correct)

What causes a five-year-old child, known case of lactose intolerance, to develop diarrhea whenever he drinks milk?

Inability to digest lactose due to deficiency of the enzyme lactase (A) Signup and view all the answers

Which type of transport mechanism moves molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy?

Active transport (C) Signup and view all the answers

Which transport mechanism requires energy?

Facilitated diffusion (D) Signup and view all the answers

What is the primary difference between simple diffusion and facilitated diffusion?

Protein carriers are needed in facilitated diffusion but not in simple diffusion (C) Signup and view all the answers

In which type of transport does a substance move against its chemical or electrical gradient, with consumption of energy and usage of a carrier?

Primary active transport (A) Signup and view all the answers

What is the role of exocytosis in cell function?

For the secretion of proteins synthesized within the cell (B) Signup and view all the answers

What is the driving force for secondary active transport?

Another (driving) substance that is transported down its gradient (A) Signup and view all the answers

Cell Membrane Transport Mechanisms Quiz

Choose a study mode

Podcast

Questions and Answers

What type of transport mechanism is responsible for deriving salt and sugar (followed by water) into the enterocytes?

Which of the following is a characteristic of the cell membrane?

In the context of cell membranes, what do proteins (integral or peripheral) act as?

What causes a five-year-old child, known case of lactose intolerance, to develop diarrhea whenever he drinks milk?

Which type of transport mechanism moves molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy?

Which transport mechanism requires energy?

What is the primary difference between simple diffusion and facilitated diffusion?

In which type of transport does a substance move against its chemical or electrical gradient, with consumption of energy and usage of a carrier?

What is the role of exocytosis in cell function?

What is the driving force for secondary active transport?

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