The sex organ in plants that produces the male gamete is called the
A. pistil.
B. autosome.
C. anther.
D. testes.
C. anther.
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The goal of environmental genomics is to detect as many genes as possible and then, if possible, to determine to the phylogeny of the organisms to which the genes belong
Indicate whether the statement is true or false.
Control of a physiological state by a negative feedback loop differs from control by a positive feedback loop in that only in the case of negative feedback
a. does the physiological state tend to remain close to constant. b. does an effector respond to change by increasing output. c. is the effector controlled by some form of sensory input. d. is the response likely to be helpful to an organism's fitness. e. c and d.
Which of these drugs has the most narrow-spectrum activity?
A. Cephalosporins B. Isoniazid C. Erythromycin D. Tetracycline E. Aminoglycosides
Carbon Cycle picture
What will be an ideal response?