Unit 3a Energy Flow HONORS

What is the primary function of carbohydrates in the body?

• structural support

• genetic information storage

• catalyzing reactions

• energy storage

The macromolecules that make up the majority of the cell membrane’s structure are ________.

• lipids

• proteins

• enzymes

• carbohydrates

The macromolecules that would most likely be involved in contracting muscles would be __________ .

• lipids

• proteins

• enzymes

• carbohydrates

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There are several levels of protein structure, the most complex of which is quaternary. Why are there so many

different ways our bodies make proteins?

• We use them mainly for energy

• The cell is not allowed to make only one shape of protein.

• The form of the protein fits its function.

• Our body does not need to make protein

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If available, the body will always digest which macromolecule for energy first?

• lipids

• proteins

• enzymes

• carbohydrates

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Animals store most of their excess energy reserves as _______ because…

• glucose; it is easy to break down

• fat; they store twice as much energy per gram

• protein; it is a compact source of energy in their bodies

• carbohydrates; they store twice as much energy per gram of glucose

We obtain all of the macromolecules from the food that we eat except for ______.

• lipids

• proteins

• nucleic acids

• carbohydrates

Glucose is a type of this macromolecule.

• lipids

• proteins

• nucleic acids

• carbohydrates

Nucleotides are the monomer of this macromolecule.

• lipids

• proteins

• nucleic acids

• carbohydrates

Amino acids connected by peptide bonds create ___

• lipids

• proteins

• nucleic acids

• carbohydrates

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