Of the mollusks, snails are in the class of
A. bivalves.
B. deuterostomes.
C. cephalopods.
D. gastropods.
Answer: D
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The current understanding of the membranes of the cell is based on the ________ model.
Fill in the blank(s) with the appropriate word(s).
As the total surface area of a cell increases, the surface area/volume ratio decreases
Indicate whether the statement is true or false.
Which of the following two terms relate most closely to split genes?
A) 5'-cap, 3'-poly-A tail B) introns, exons C) elongation, termination D) heteroduplex, homoduplex E) transcription, translation
One of the first steps in obtaining a kayrotype is treating cells wiht a drug that stalls cells in mitosis. Why must cells arrest in mitosis for karyotype analysis?
A.) only in mitosis are homologous chromosomes paired up B.) only mitotic chromosomes are highly condensed and visible with a light microscope C.) only mitotic cells contain homologous chromosomes, because mitosis happens after DNA D.) only mitotic chromosome DNA is separated into single strands, allowing for stained by dyes