Question

1. Which statement about enzymes is FALSE?

A) enzymes are proteins

B) enzymes speed up chemical reaction rates

C) enzymes are highly specific and usually can catalyze only one type of reaction

D) enzymes have a particular shape which may be altered by exposure to many chemicals

E) enzymes are destroyed during the reaction

2) What characteristic of DNA structure is most related to the concept of a genetic code?

A) complementary base pairing

B) sequence of nucleotides

C) structure of ribosomes

D) sugar-phosphate backbones

E) hydrogen bonding its helical nature

3) The physical appearance of an individual is known as its

A) F1 generation

B) genotype

C) dominance

D) heterozygosity

E) recessive trait

F) phenotype

4) The primary function of O₂ in cellular respiration is to

A) provide electrons

B) accept electrons from the electron transport system

Answer 1