In which animal does air flow through the lungs in one direction only?
A. hummingbird
B. lizard
C. elephant
D. fly
E. alligator
Answer: A
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Suppose a microbiologist wanted to assess the microbial community in a gram of forest soil. Which of the following technique(s) would help them to enumerate a specific genus or type of microbe?
A. Optical tweezers B. Fluorescent in-situ hybridization (FISH) C. Phylochip D. Catalyzed reported deposition-FISH (CARD-FISH)
What is the part of the kidney where urine is formed?
A. The blood vessels B. The liver C. The nephron D. The ureter
If cytosine makes up 15% of the bases in a sample of DNA from an organism, then adenine makes up what percentage of the bases?
What will be an ideal response?
Terrestrial vertebrates and some fish evolved a form of fertilization in which the male gametes are introduced into the female reproductive tract. What is this called?
A. internal fertilization B. synchronous fertilization C. external fertilization D. asexual fertilization