_____ 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

Biology & Microbiology

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Which of the following is NOT dependent on

the others as a food supply?

a. carnivores b. herbivores c. producers d. detritivores e. decomposers

Biology & Microbiology

The influence of environmental factors on DNA packaging is called

A) epigenetics B) supercoiling C) transcription D) horizontal gene transfer

Biology & Microbiology

Figure 23.7 ? 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

Biology & Microbiology

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

Biology & Microbiology