Which function do proteins and carbohydrates have in common?

• provide energy for cellular processes

• provide structure to the cell

• facilitate cellular processes

• determine which genes will be displayed by an organism

The monomer of a nucleic acid is made up of 3 parts called a -

• nucleotide

• monosaccharide

• amino acid

• glycerol

What is the function of an enzyme?

• to speed up the rate of chemical reactions like digestion

• to provide structure and stability to the cell membrane

• to absorb sunlight during photosynthesis

• to regulate systems of defense

Proteins and carbohydrates have many functions in the body of an organism. Specific proteins and carbohydrates perform specific tasks. Information about a protein and a carbohydrate is given above. How are ferritin and glycogen similar in their primary functions for an organism?

• Both store materials needed by the organism.

• Both store energy used by the organism.

• Both support the structure of the organism.

• Both store information for the organism.

What is the main biological function of carbohydrates?

• Store energy

• Contain genetic information

• Make up enzymes

• Make you fat

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An advertisement for a health supplement for dogs claims to build lean muscle and strengthen tendons and ligaments, as well as provide energy. Which two biomolecules must the supplement contain to provide these benefits?

• Carbohydrates and lipids

• Proteins and carbohydrates

• Nucleic acids and carbohydrates

• Lipids and nucleic acids

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Chemical reactions in the human body are catalyzed when enzymes interact with substrates shown in the diagram.

What happens to the enzyme after the chemical reaction occurs?

• The enzyme is used up during the reaction, so it no longer exists.

• The enzyme is changed during the reaction, so it no longer works.

• The enzyme becomes a part of the product of the reaction, so it no longer exists.

• The enzyme is unchanged, so it can be reused when more substrate is available.

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An enzyme speeds up a reaction by

• lowering the activation energy.
• raising the activation energy.
• releasing energy.
• absorbing energy.

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What kind of lipids acts as chemical messengers?

• hormones

• phospholipids

• waxes

• steriods

Lipids make up the main components of ___________________

• enzymes
• cell membranes
• genetic materials
• glucose