What ability is found in stem cells that are totipotent?
A) Totipotent cells can only develop into blood cells.
B) Totipotent cells can develop into any cell type.
C) Totipotent cells can transform skin into muscle cells.
D) Totipotent cells can change the genetic code of an organism.
B
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Which organism exhibits bipolar staining on the Gram stain, which resembles a "safety-pin" appearance?
a. B. mallei b. B. pseudomallei c. B. diminuta d. B. vesicularis
What portion of penicillins is responsible for differences in each compound's microbicidal activity?
A) The peptidoglycan B) The thiazolidine ring C) The beta-lactam ring D) The variable side chain
Angiosperms produce pollen in structures called ________
Fill in the blank(s) with correct word
Darwin's theory states, in part, that individuals with certain traits have an increased competitive edge. What is the source of these traits?
A. adaptation to stress B. development over a lifetime C. inheritance D. mutation after birth E. better living conditions