In a frog in which the diploid number of chromosomes per cell is 24, what is the total number of chromatids present
per cell in prophase II after the first division and cytokinesis?
a. 0
b. 6
c. 12
d. 24
e. 48
ANSWER: d
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How do protists assist termites in digesting wood?
a. They protect the termites’ gut from damage from the cellulose fibers. b. Enzymes produced by the protists break down carbon. c. Protists absorb nutrients from the wood in the termites’ guts. d. Enzymes produced by protists in the termites’ guts break down cellulose.
All animals gain or lose heat by a combination of four general mechanisms
Indicate whether the statement is true or false.
For bacteriophages and animal viruses ________ is the step in the viral life cycle that determines host cell or tissue specificity
A) attachment B) penetration C) synthesis D) assembly
Smooth muscle has all of the following characteristics except:a
being attached to bones via tendons. b. having sustained contractions. c. requiring less ATP to maintain a high level of force. d. contracting slowly. e. having muscle fibers capable of greater shortening than striated muscle.