_____ is a component of proteins, and _____ is a component of DNA.
A) sulfur, phosphorus
B) phosphorus, sulfur
C) phosphorus, amino acids
D) amino acids, sulfur
Answer: A) sulfur, phosphorus
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Diploid somatic cells of elephants have 56 chromosomes. If nondisjunction of one of an elephant's chromosomes occurs in meiosis II, the resulting sperm are expected to have the chromosome complement:
A. 28, 28, 28, 28 B. 28, 28, 29, 27 C. 29, 29, 27, 27 D. 29, 29, 28, 28 E. 56, 56, 57, 55
Which of the following is NOT dependent on
the others as a food supply?
a. carnivores b. herbivores c. producers d. detritivores e. decomposers
The influence of environmental factors on DNA packaging is called
A) epigenetics B) supercoiling C) transcription D) horizontal gene transfer
Figure 23.7
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Refer to the accompanying figure for questions 11 and 12.
The structure labeled "4" in the figure is a(n) ____.
A. asexual spore B. haploid spore C. mature zygospore D. immature zygospore E. spore sac