More about Macromolecules

What molecule is this?

• DNA polymerase

• ATP

• Water

• Glucose

Which of the following are polymers of glucose?

• adenine, thymine, guanine, cytosine

• ATP, RNA, DNA

• cellulose, glycogen, starch

• proteins and lipids

Carbohydrates are made of:

• amino acids

• carbon and water

• fatty acids

• nucleotides

What best describes the role of carbohydrates in living things?

• Store and release energy; structure of cell walls

• Store and transmit genetic information

• Regulate cell processes and send chemical messages

• Form waterproof coating, like the waxy leaf cuticle

Which function can be carried out by both lipids and proteins?

• control the rate of reactions, act as catalysts

• transfer genetic information

• play a major role in the immune system, fighting disease

• function as chemical messengers in the body

Enzymes serve as catalysts because they speed up chemical reactions by:

• increasing activation energy

• decreasing activation energy

• stabilizing activation energy

• providing stored energy to power a reaction

Which of the following correctly matches a polymer and its monomer?

• Proteins are made of enzymes.

• Triglycerides are made of three monosaccharides

• DNA is made of amino acids

• Cellulose is made of glucose molecules.

What will happen if a person does not produce enough of the enzyme lactase?

• The body would not be able to synthesize more complex carbohydrates.

• Their body will not be able to build lactose sugar molecules.

• They will not be able to store energy in the form of glycogen.

• They will have trouble breaking down lactose sugar molecules into monosaccharides.

In addition to carbon, hydrogen and oxygen, DNA also contains these two elements:

• phosphorus and sodium

• nitrogen and sulfur

• phosphorus and nitrogen

• nitrogen and calcium

This monomer is used to build a polymer that can serve this function:

• Energy storage

• Waxy waterproof coating

• Antibody to fight infection

• Store and transfer genetic information