Which one of the following statements is true?
A) Koch developed a rabies vaccine.
B) Microorganisms are ubiquitous.
C) Most microorganisms are harmful to humans.
D) Pasteur conducted experiments that proved the theory of abiogenesis.
B) Microorganisms are ubiquitous.
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Answer the following statements true (T) or false (F)
1. Perception of salty tastes occurs at the level of the taste bud. 2. Death of hair cells resulting from repeated exposure to loud noises is thought to be caused by metabolic "exhaustion" of these cells from continuous activation. 3. The lateral line system of fishes functions to detect vibrations in the water around them. 4. The most common defect in color vision, termed red-green color blindness, results from a faulty opsin gene. 5. Compound eyes in invertebrate animals are composed of many smaller ommatidia.
what antiviral agent is used to treat respiratory syncytial virus?
What will be an ideal response?
Which factor(s) is (are) contributing to the increase in the spread and occurrence of many diseases?
a. International travel b. Overuse of antibiotics c. Misuse of antibiotics d. An increase in the population e. All of these
If you wished to study the SOS response in Escherichia coli, which of the following experimental procedures could be used?
A. Transfer log phase cells from complete medium to thymine minimal medium. B. Inactivate genes that encode DNA polymerases. C. Expose cells to nonionizing radiation for 20 minutes. D. Expose cells to ionizing radiation for 10 minutes. E. All of the choices are correct.