Beta-lactam antibiotics such as penicillins, have an effect on which of the following types of cells?
A. animal cells
B. bacterial cells
C. fungal cells
D. virus-infected cells
E. both animal and fungal cells
Answer: B
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Which of the following is a small Gram-negative rod requiring X-factor for growth?
A. Escherichia coli. B. Treponema pallidum. C. Neisseria gonorrheae. D. Haemophilus ducreyi
Caffeine from the coffee plant is stored in
a. central vacuoles. b. chloroplasts. c. chromoplasts. d. leucoplasts.
An internal checkpoint can be found where?
a. between the S phase and the G2 phase b. at the end of cytokinesis c. near the end of the G1 phase d. after prophase
When comparing fermentation and anaerobic respiration, which statement would be true?
A. Fermentation and anaerobic respiration are the same. B. Both anaerobic respiration and fermentation use phosphorylation to make ATP. C. Anaerobic respiration and fermentation both employ the electron transport system. D. Fermentation produces carbon dioxide, whereas anaerobic respiration does not.