All of the following are true about endotoxins EXCEPT:
A. The lipid A moiety in the LPS is responsible for the toxicity of the endotoxins
B. The main pathologic effects of endotoxins are fever, shock, hypotension, and thrombosis a.k.a septic shock
C. They are released into the host's circulation following bacterial cell analysis
D. They are heat-stable lipopolysaccharide (LPS) component of the outer membranes of gram-positive bacteria
Answer: D. They are heat-stable lipopolysaccharide (LPS) component of the outer membranes of gram-positive bacteria
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Which of the following contributes to the apparent contradiction that the size of an organism's genome is not directly related to the complexity of the organism? (Choose all that apply)
A. having more than two copies of each chromosome B. a change in the amount of highly repetitive DNA sequences C. a change in the amount of moderately repetitive DNA sequences D. varying susceptibility to viral infection
The sheets of red algae used to wrap sushi are actually what stage of the Porphyra life cycle?
a. sporophyte b. zygote c. gametes d. gametophyte
An adult male produces sperm continuously by meiotic division of cells lining what structure?
A. Malpighian tubules B. Fallopian tubules C. seminiferous tubules D. epididymis tubules E. vas deferens tubules
Crossing-over is more likely to separate genes on a chromatid if they are
A. recessive genes. B. close together. C. dominant genes. D. far apart. E. mutated genes.