Chp 4 Big Practice Quiz

What is the overall function of cellular respiration?

• To produce glucose molecules that can be used for cellular fuel.

• To use carbon dioxide to produce oxygen molecules.

• To produce enzymes and other proteins needed for metabolic processes.

• To release energy from nutrient molecules to be used as cellular energy.

The addition of water molecules to break bonds occurs in__________, whereas water molecules are released as bonds are formed in__________.

• hydrolysis; dehydration synthesis

• dehydration synthesis; hydrolysis

What region of a tRNA molecule binds to mRNA?

• Codon

• Intron

• Promotor

• Anticodon

Any molecule within a cell that has a uracil group will also contain__________.

• ribose
• glycerol

• deoxyribose

DNA and RNA differ in number of strands, type of sugar, and types of nitrogenous bases.

• True

• False

Which of the following describes RNA?

• It is single stranded and includes the bases A, U, C, and G.

• It is double stranded and includes the bases A, T, C, and G.

• It is single stranded and includes the bases A, T, C, and G.

• It is double stranded and includes the bases A, U, C, and G.

What are molecules that function to increase the rate of chemical reactions called?

• Hormones

• Mutagens

• Enzymes

• Substrates

A metabolic pathway is a particular sequence of enzyme-controlled reactions.

• True

• False

What is the complementary base pairing to the DNA nitrogenous base thymine?

• Uracil

• Cytosine

• Thymine

• Adenine

What is anabolism?

• Biochemical reactions that release energy from nutrients.

• Biochemical reactions that break down compounds.

• Biochemical reactions that synthesize compounds.

• All chemical reactions occurring in the body.