Biology

All of the following are population characteristics EXCEPT

(A) number of individuals
(B) phenotype
(C) sex ratio
(D) age distribution
(E) death rate
Biology

A cell contains multiple nuclei with identical genetic information. This cell most likely formed by going through

(A) multiple rounds of mitosis, but no cytokinesis
(B) multiple rounds of the M phase, but no rounds of the S phase
(C) multiple rounds of cytokinesis, but no rounds of mitosis
(D) multiple rounds of the cell cycle, but no rounds of mitosis
(E) multiple rounds of the S phase, but no other phases of the cell cycle
Biology

Which answer choice matches the functions listed below to the correct RNA types?

(I.) Interprets a codon as an amino acid
(II.) Binds to a gene transcript
(III.) Contains information for assembling a protein

 

(A) I. mRNA; II. rRNA; III. tRNA
(B) I. mRNA; II. tRNA; III. rRNA
(C) I. rRNA; II. mRNA; III. tRNA
(D) I. tRNA; II. mRNA; III. rRNA
(E) I. tRNA; II. rRNA; III. mRNA
Biology

In a breeding experiment using gray and white mice of unknown
genotypes, the following results were obtained.

If the gray female from cross IV were mated with the gray male from cross II, then which of the following would most likely be true?

(A) All of the offspring would be gray.
(B) All of the offspring would be white.
(C) Half of the offspring would be gray.
(D) One-quarter of the offspring would be gray.
(E) One-quarter of the offspring would be white.
Biology

ATP is produced during which of the following processes?

(I) Photosynthesis
(II) Aerobic respiration
(III) Fermentation

 

(A) I only
(B) II only
(C) I and III only
(D) II and III only
(E) I, II, and III
Biology

Which of these cell structures contains one or more membranes?

(I.) Ribosome
(II.) Plasma membrane
(III.) Endoplasmic curriculum
(IV.) Golgi body

 

(A) II only
(B) IV only
(C) I and II
(D) I, II, and III
(E) II, III, and IV
Biology

In a breeding experiment using gray and white mice of unknown
genotypes, the following results were obtained.

If two gray progeny of cross IV mate with each other, what is the probability that any one individual offspring will be gray?

(A) 100%
(B) 75%
(C) 50%
(D) 25%
(E) 0
Biology

Cyanobacteria are photosynthetic prokaryotes. Which organelles do cyanobacteria cells contain?

(I.) Chloroplasts
(II.) Nucleus
(III.) Ribosomes

 

(A) I only
(B) II only
(C) III only
(D) I and II only
(E) I and III only
Biology

A cell normally contains 54 chromosomes. During which phases of mitosis does the cell contain 108 chromosomes?

(I.) Anaphase
(II.) Metaphase
(III.) Prophase
(IV.) Telophase

 

(A) I and IV
(B) II and III
(C) II and IV
(D) I, II, and III
(E) I, II, and IV