Which of the following does not apply to Neisseria meningitidis?
A. It causes a serious meningitis.
B. Its reservoir is the nasopharynx of human carriers.
C. It can be easily transmitted in day care facilities, dorms, and military barracks.
D. Its virulence factors include a capsule, pili, endotoxin, and IgA protease.
E. It is a common cause of bacterial pneumonia.
Answer: E
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The type of reproductive isolation in which two populations are separated due to the sperm cells of one not being able to fertilize the egg cells of the other is
A. ecological isolation. B. hybrid infertility. C. gametic isolation. D. hybrid inviability. E. temporal isolation.
Transcription and translation occur simultaneously in prokaryotes. Why can't this process take place in eukaryotes?
What disadvantage results from such linking in prokaryotes? What will be an ideal response?
Which of the following is NOT an advantage of
asexual reproduction? a. Asexual reproduction is more efficient than sexual reproduction. b. Individual organisms do not have to seek mates. c. Asexual reproduction promotes variation. d. Asexual reproduction is less energetically costly than sexual reproduction. e. In stable environments the offspring are as well adapted as the parents.
Match all applicable letters with the most appropriate term.
A. collenchyma B. sclerenchyma C. periderm D. pith E. stomata F. epidermis G. phloem H. parenchyma I. vascular cambium J. endodermis K. procambium L. amyloplast M. mesophyll