What plant group has the largest number of living species?

A. Seedless, nonvascular plants
B. Cone-bearing plants
C. Flowering plants
D. Seedless vascular plants


Answer: C

Biology & Microbiology

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Knowing the concentration of microorganisms in a sample is often an important consideration for environmental, industrial, and medical microbiologists, yet a microscope is sometimes not used to accomplish this task

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In humans, XO individuals are females with Turner syndrome and XXY individuals are males with Klinefelter syndrome. Which of the following events cannot give rise to a Klinefelter male?

A) nondisjunction at meiosis I in the mother B) nondisjunction at meiosis II in the mother C) nondisjunction at meiosis I in the father D) nondisjunction at meiosis II in the father E) All of the choices could give rise to a Klinefelter male.

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Sulfonamides are analogs of PABA and, as a result, they inhibit ________ synthesis.

A. folic acid B. DNA C. RNA D. protein E. phospholipid

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The addition of a strong acid like HCl to an aqueous solution would result in

A. both the release of H+ and a decrease in pH. B. both the release of H+ and an increase in pH. C. the release of H+ into the solution. D. an increase in pH.  E. a decrease in pH.

Biology & Microbiology