The development of resistance of MRSA bacteria to antibiotics is an example of
A. reproduction.
B. evolution.
C. organization.
D. metabolism.
E. homeostasis.
Answer: B
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Which of the following is NOT a way that many terrestrial ectotherms regulate their temperature?
a. moving into or out of the shade b. panting c. changing the angle of the body relative to the sun d. changing blood flow to the skin e. thermoregulation
Herring gulls feed their chicks by regurgitating food for the chick in the nest. When a chick pecks at the red spot on the gull's beak, the parent regurgitates the food. Interestingly, the chicks will peck at any red spot, whether it is attached to a gull or not. Which features of this behavior are correctly labeled? (Check three.)
_____ Fixed action pattern -- finding a healthy variety of food for the chick _____ Fixed action pattern -- pecking at the spot _____ Innate releasing mechanism -- neural circuit that induces pecking in response to a red spot _____ Innate releasing mechanism -- the red spot _____ Key stimulus -- the shape of the parent's beak _____ Key stimulus -- the regurgitated food _____ Key stimulus -- the red spot Clarify question: What is the key concept addressed by the question? What type of thinking is required? Gather Content: What do you already know about feeding behaviors? What other information is related to the question? Choose Answer: Given what you now know, what information is most likely to produce the correct answer? Reflection on Process: Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Gap junctions are most plentiful in
a. striated muscle. b. the stomach. c. smooth and cardiac muscle. d. the brain. e. the spinal cord.
If the DNA triplets were ATG?CGT, the mRNA codons would be
a. AUG?CGU. b. ATG?CGT. c. UAC?GCA. d. UAG?CGU. e. CGT-ATG.