Biology

Which of these labels matches the structure of the partial RNA strand shown?

(A) I. phosphate; II. ribose; III. nitrogen base
(B) I. phosphate; II. nitrogen base; III. ribose
(C) I. nitrogen base; II. phosphate; III. ribose
(D) I. ribose; II. nitrogen base; III. phosphate
(E) I. ribose; II. phosphate; III. nitrogen base
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
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

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

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

A plant cell is placed in a hypotonic solution. As a result, the cell will

(A) lyse
(B) swell but remain intact
(C) shrivel
(D) remain unchanged
(E) take up solutes
Biology

Which of these BEST describes the part of the molecule shown?

(A) It is hydrophilic.
(B) It forms the outer layer of the plasma membrane.
(C) It is composed of phosphate atoms.
(D) It contains nonpolar covalent bonds.
(E) It is capable of hydrogen bonding.
Biology

An original cell replicates its DNA. The cell undergoes mitosis and cell division, and one of the daughter cells replicates its DNA. Which of these BEST describes the DNA of the second-generation daughter cells?

(A) One of the cells will contain DNA consisting of one strand from the original cell.
(B) One of the cells will contain DNA consisting of two strands from the original cell.
(C) Both of the cells will contain DNA consisting of one strand from the original cell.
(D) Both of the cells will contain DNA consisting of two strands from the original cell.
(E) Neither of the cells will contain DNA consisting of strands from the original cell.
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