Which of the following is the correct sequence of events in protein synthesis?
A. DNA-tRNA-mRNA-Protein
B. mRNA-tRNA-Ribosome-Protein
C. DNA-mRNA-tRNA-Ribosome-Protein
D. tRNA-mRNA-DNA-Protein
C. DNA-mRNA-tRNA-Ribosome-Protein
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Which of the following statements does NOT describe characteristics of heterospory?
A. Heterospory involves production of spores on two different parts of the same plant. B. Heterospory involves production of two different kinds of spores, one growing into male gametophytes and the other into female gametophytes. C. Heterospory increases the chance of cross-fertilization. D. Heterospory increases the potential for genetic variation and aids evolutionary flexibility. E. Heterospory only occurs in vascular plants.
The role of a tumor suppressor protein in a cell is to
a. promote cell division of healthy cells. b. halt cell division in healthy cells experiencing difficulties in DNA replication. c. promote cell division of abnormal cells. d. trigger DNA replication in preparation for cell division. e. activate cyclin-dependent protein kinases.
All of the following are characteristic of Pseudomonas aeruginosa EXCEPT
A) gram-positive cell wall. B) resistance to many types of disinfectants and antibiotics. C) growth in moist environments. D) production of pyocyanin. E) rod-shaped.
The antibody class which is involved in fighting parasites is
A) IgA. B) IgD. C) IgE. D) IgG. E) IgM.