Salt in mannitol salt agar inhibits the growth of Staphylococcus aureus
Indicate whether the statement is true or false.
Answer: FALSE
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Which of the following statements best describes the life cycles of charophyceans and mosses?
A. The diploid generation of charophyceans consists of only one cell whereas the diploid generation of mosses is multicellular. B. The haploid generation of charophyceans consists of only one cell whereas the haploid generation of mosses is multicellular. C. The haploid and diploid generations of charophyceans both consist of only one cell whereas both generations of mosses are multicellular. D. The haploid and diploid generations of both charophyceans and mosses are unicellular. E. All of the choices provided are incorrect.
Place the following in the most likely order for biosynthesis of a
(1) phage lysozyme; (2) mRNA; (3) DNA; (4) viral proteins; (5) DNA polymerase. a. 5, 4, 3, 2, 1 b. 1, 2, 3, 4, 5 c. 5, 3, 4, 2, 1 d. 3, 5, 2, 4, 1 e. 2, 5, 3, 4, 1
Which class of hormones produced in the roots of plants promotes cell division and growth and retards the aging of flowers and leaves?
A) gibberellins B) phytochromes C) cytokinins D) ethylene
Helper T-cells
A. suppress immune reactions. B. directly destroy target cells. C. activate B-cells and other T-cells. D. secrete antibodies. E. function in allergic reactions.