Which of the following is not true of glutaraldehyde?
A. It is classified as a carcinogen.
B. It inactivates endospores in 3 hours.
C. It inactivates viruses.
D. It does not damage plastics.
E. It cross-links proteins on cell surfaces.
Answer: A
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E. coli would appear what color on HE agar?
a. Green b. Green with a black center c. Yellow d. Yellow with a black center
If too little time has passed for crossing over to randomize haplotypes or if natural selection favors certain haplotypes, what would you expect to see?
What will be an ideal response?
Which one of the following steps occurs during the absolute refractory period?
A) The neuron cannot generate an action potential. B) Sodium channels open, releasing sodium ions into the neuron, which causes potassium channels to close. C) Sodium channels open, which causes potassium channels to open. D) A nerve impulse fails to reach threshold. E) Potassium channels open, releasing potassium ions from the neuron; sodium channels close.
All food chains begin with a photosynthetic producer.
Answer the following statement true (T) or false (F)