Gonorrhea, a sexually transmitted disease, is an acute infection of the mucous membranes of the ________.
A. conjunctiva
B. rectum
C. genitourinary tract
D. All of the choices are correct.
Answer: D
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Stephanie is infected with a pathogen. How might it be determined if the pathogen is a virus
or a bacterium?
a. A virus does not have genetic material such as DNA or RNA. b. A bacterium has ribosomes, but a virus does not. c. A virus does not have an outer covering or capsule. d. Bacteria are eukaryotes, and viruses are prokaryotes.
To create a multicellular eukaryotic transgenic organism, a researcher
A) introduces foreign DNA into a fertilized ovum. B) injects a gene of interest into a somatic cell. C) injects a gene of interest into several somatic cells. D) introduces foreign DNA into somatic cells in culture and transplants them.
In order for a cancer to develop, cells must be capable of breaking away from neighboring cells, and they must ignore growth-inhibitory signals from other cells, resulting in uncontrolled growth and cell division
Indicate whether the statement is true or false
Which of the following is not true regarding ribosomes?
A. They contain an A site and a P site. B. They translate RNA into protein. C. They contain both RNA and protein. D. They function within the nucleus. E. They are composed of two subunits.