An organism that cannot grow without oxygen is a(n) ________.
A. obligate aerobe
B. microaerophile
C. obligate anaerobe
D. aerobe
E. facultative anaerobe
Answer: A
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The semiliquid substance within the nucleus is called ____
a. nucleoplasm b. nuclear gel c. cytoplasm d. chromatin e. protoplasm
14. The "spent" electrons from electron transport in aerobic cellular respiration are transferred to
A. hydrogen, to neutralize its charge before passing through ATP synthase. B. sulfur, oxidizing it to form more hydrogens in the concentration gradient. C. carbon dioxide, in order to allow it to enter the Krebs cycle. D. oxygen, thereby reducing it to form water. E. nitrogen, reducing it to form NADH.
A microbiologist inoculates Staphylococcus epidermidis and Escherichia coli into a culture medium. Following incubation, only the E. coli grows in the culture. What is the most likely explanation?
A. The culture medium must be differential. B. The microbiologist used too much inoculum. C. The culture is contaminated. D. The culture medium must be selective. E. The incubation temperature was incorrect.
All of the following are causative agents of conjunctivitis EXCEPT
A) Chlamydia trachomatis. B) herpes simplex. C) adenovirus. D) Neisseria gonorrhoeae. E) Haemophilus influenzae.