Refer to Figure 26-2. The process occurring in the cells labeled 6 is:
a. fertilization.
b. fusion.
c. the first meiotic division.
d. the second meiotic division.
e. mitosis.
B
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What is the difference between a dideoxynucleotide (ddNTP) used in sequencing and regular deoxynucleotides?
a. ddNTPs are tagged with radiolabels. b. ddNTPs have 3 extra phosphate groups. c. ddNTPs lack the free 3’ OH group on the five-carbon sugar. d. ddNTPs are bound by hydrogen bonds instead of phosphodiester bonds.
Often, the second part of a scientific name is
a. a Latinized description of a particular trait b. the same as for other members of the same genus c. capitalized if it derives from a proper name d. different in different locations
Why is the dialysate continually replaced in hemodialysis?
A. because it is lost by urination B. because it biodegrades rapidly C. because it is easily infected D. because it enters the body and is absorbed E. to maintain a favorable concentration gradient with the blood
The primordial soup is not organic-rich
a. True b. False Indicate whether the statement is true or false