Which of the following is found most often for protostomes?
a. spiral, indeterminate cleavage
b. radial, indeterminate cleavage
c. spiral, determinate cleavage
d. radial, determinate cleavage
e. radial cleavage in juveniles, determinant cleavage in adults
C
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What type of mutation leads to a frameshift in the reading of DNA?
A. All point mutations B. Deletions only C. Insertions only D. Both insertions and deletions
Genetic counselors are typically medical doctors who specialize in treating infertile couples
a. True b. False
Which statement best describes how people die of carbon monoxide poisoning?
A) As the carbon dioxide content of blood increases, a phenomenon known as the Haldane effect converts the excess carbon dioxide to carbon monoxide until it reaches toxic levels. B) Carbon monoxide is toxic because it binds more readily to hemoglobin than oxygen, thereby decreasing the oxygen carrying capacity of blood. C) Carbon monoxide causes the carbamino effect where carbon dioxide is stripped of an oxygen, producing carbon monoxide. D) Carbon monoxide causes decompression sickness which can lead to death. E) Carbon monoxide is toxic because it readily picks up oxygen to produce carbon dioxide, causing acidosis and eventual death.
All living organisms are part of the natural world because __________.