Feathers in birds appear to have first evolved for insulation but later conveyed a new advantage in helping create light aerodynamic surfaces. This switch in function is an example of a(n) ________
A) paedomorphosis
B) an analogy
C) an adaptation
D) exaptation
D
Biology & Microbiology
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RNA polymerase can do which one of the following?
A. allow RNA-DNA hybrids to form B. release a finished RNA transcript from a DNA template C. separate DNA strands D. restore the original DNA strands E. RNA polymerase is capable of all of these activities.
Biology & Microbiology
The human urinary system consists of all of the
following structures EXCEPT
a. urinary bladder. b. urethra. c. two adrenal glands. d. two ureters. e. two kidneys.
Biology & Microbiology
The physical removal of microbes is called (antisepsis/degerming/disinfection)
What will be an ideal response?
Biology & Microbiology
The chief distinguishing characteristic of all mammals is the presence of
What will be an ideal response?
Biology & Microbiology