Terrestrial organisms lose water through evaporation. In what ecosystem might an entomologist find a good study organism to examine the prevention of water loss?

A) wet rain forest
B) desert
C) prairie
D) chaparral


B

Biology & Microbiology

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One commercially important species that is a resident of kelp forests is the

a. abalone. b. mussel. c. cowrie. d. lobster. e. sea anemone.

Biology & Microbiology

Self-recognition is based on T cell receptors recognizing:

a. MHC markers b. perforins c. complement d. naive B cells e. antibodies

Biology & Microbiology

What type of speciation is most common in animals?

a. hybridization b. allopatric c. allopolyploidy d. sympatric e. paedomorphosis

Biology & Microbiology

Consider a human somatic cell in the G2 phase of the cell cycle. Which statement is true about the DNA molecules at this stage ?

A: Each chromosome consists of two identical DNA molecules joined at a centromere. B: The DNA molecules are not yet associated with histones (nucleosomes). C: The DNA molecules are part of highly condensed rod-like chromosomes. D: A and B. E: A and C.

Biology & Microbiology