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
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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
Explain five major limitations to using a light microscope to directly count microorganisms. What will be an ideal response?
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.
Sulfonamides are analogs of PABA and, as a result, they inhibit ________ synthesis.
A. folic acid B. DNA C. RNA D. protein E. phospholipid
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.