The membranes of psychrophilic bacteria have relatively high levels of ________ fatty acids, which allow them to remain semifluid at cold temperatures.
A. unsaturated
B. sterol
C. saturated
D. aromatic
Answer: A
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In an experiment, you have created a microbial strain in which you have deleted a single gene; to evaluate the transcriptome and the proteome, you
A. run two-dimensional gels. B. perform DNA sequencing. C. run microarray analysis. D. run microarray analysis and two-dimensional gels.
Which of the following collects urine and leads to the ureter on the outside of the kidney?
a. The renal artery b. The urethra c. The urinary bladder d. The renal pelvis
Which general genetic process is believed to account for the variety of cellular structures and functions in eukaryotic cells?
A) negative control exclusively B) variable gene activity C) intron processing D) RNA processing E) maternal environmental activities
What molecule would you not expect to find in a retrovirus?
a. Uracil b. Cytosine c. Guanine d. Thymine