Where do T lymphocytes mature?
A. spleen
B. tonsil
C. thyroid
D. red bone marrow
E. thymus
Answer: E
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Which of the following is/are true of the sheath of Leptothrix?
A. May contain ferric and manganic oxides B. Helps protect against microbial predators C. Attaches bacteria to surfaces D. All of the choices are correct.
Stomatal pores function to allow which of the following?
A. loss of water vapor from leaves B. entry of CO2 into leaves C. prevention of water loss from leaves D. escape of O2 from leaves E. All of the choices are correct
Which of the following is most likely to be preserved as a fossil?
A. a complete large organism B. an organ like an eye or lung C. an organism that died on land D. a leaf or stem E. a bone or shell
What type of monomer does ATP represent?
A. fatty acid B. glycerol C. nucleotide D. amino acid E. monosaccharide