Of the storage forms of glucose, which can we not digest?

cellulose

starch

glycogen

monosaccharides

Answer and Explanation

The Correct Answer is A

A. cellulose: Humans lack the enzyme cellulase, so we cannot break down cellulose, a plant polysaccharide, for energy.
B. starch: Starch is digestible; humans have amylase to break it down into glucose.
C. glycogen: Glycogen is stored in human liver and muscle and is easily digested.
D. monosaccharides: These are already single sugar units, like glucose, and require no digestion.

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Correct Answer is C

Explanation

A. hydrochloric acid (HCl): This is an inorganic acid, lacks carbon-hydrogen bonds.
B. salt (NaCl): Inorganic ionic compound, no carbon present.
C. sucrose (C₁₂H₂₂O₁₁): Sucrose is a carbohydrate (disaccharide), which contains carbon, hydrogen, and oxygen-hallmarks of organic compounds.
D. water (H₂O): Water is essential but inorganic-it contains no carbon.

A. osmosis B. facilitated diffusion C. active transport D. through channels

Correct Answer is C

Explanation

A. osmosis: Osmosis is passive (requires no energy), so it will still occur even if mitochondria are poisoned.
B. facilitated diffusion: Facilitated diffusion uses transport proteins but does not require ATP-still functional without mitochondria.
C. active transport: Active transport requires ATP, which is produced by the mitochondria. Blocking mitochondria interrupts ATP production, halting active transport.
D. through channels: Movement through ion channels is usually passive (e.g., diffusion), and does not require ATP.

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Of the storage forms of glucose, which can we not digest?

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Naxlex Comprehensive Predictor Exams

Which of the following is an organic compound?

Correct Answer is C

Explanation

A selective poison that blocked the function of the mitochondria was used on a group of cells. Which of the following mechanisms for crossing the membrane would most likely be interrupted by the presence of this poison?

Correct Answer is C

Explanation

Of the storage forms of glucose, which can we not digest?

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