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

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 the graph above, the time when the number of living bacteria is increasing at the greatest rate occurs

(A) during the first 2 hours
(B) between the 2nd and the 4th hour
(C) between the 4th and the 6th hour
(D) between the 6th and the 10th hour
(E) between the 11th and the 13th hour
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

The partial sequence of a single DNA strand is shown. What will be the sequence of the complementary strand produced during DNA replication?

3′-ATGCTGAACT-5′

(A) 5′-ATGCTGAACT-3′
(B) 5′-CGTAGTCCAG-3′
(C) 5′-GACCTGATGC-3′
(D) 5′-GCATCAGGTC-3′
(E) 5′-TACGACTTGA-3′
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
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

Pollination involves a transfer of pollen from

(A) 4 to 1
(B) 4 to 2
(C) 4 to 5
(D) 5 to 4
(E) 5 to 9
Biology

How can a water molecule BEST be described?

(I.) It is nonpolar.
(II.) It has an equal electron distribution.
(III.) It is able to form hydrogen bonds.

 

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