How do bony fish regulate buoyancy?
A. With a protective operculum
B. By constantly swimming at an upwards angle
C. Through the calcium in the bones, which makes the skeleton lighter than the water
D. With an air-filled swim bladder
Answer: D
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In vertebrates, external fertilization (select all correct choices):
A. is common among mammals. B. cannot occur in marine (salt water) conditions. C. is found in some fish and amphibians. D. involves releasing gametes directly into a wet environment. E. is a form of asexual reproduction.
All of the following are goals of conservation
biology EXCEPT a. to investigate the evolutionary and ecological origins of biodiversity. b. to survey the range of biodiversity. c. to determine if loss of any specific species would be detrimental to mankind. d. to identify ways to maintain and use biodiversity to help man. e. all of these are true.
Describe the sequence of events that lead to neurotransmitter release from a presynaptic neuron. What will be an ideal response?
Which part of an amino acid is always acidic and why?
What will be an ideal response?