Which is NOT one of the six major classes of nutrients?
A. carbohydrates
B. nucleic acids
C. vitamins
D. water
B. nucleic acids
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Most of the Archaea are phenotypically quite similar
Indicate whether the statement is true or false.
Which of the following statements regarding infections involving biofilms is FALSE?
a. There is no way to prevent biofilms from developing on surfaces. b. The majority of hospital-acquired infections (nosocomial infections) are related to biofilms. c. Microbes in biofilms are more resistant to antimicrobials than are independent organisms. d. It is estimated that nearly 70% of all infections are caused by biofilms.
Which of the following statements about nucleic acids is FALSE?
a. DNA is double-stranded; RNA is single-stranded. b. "DNA contains carbohydrates; RNA contains amino acids." c. DNA contains deoxyribose; RNA contains ribose. d. DNA functions as the genetic material; RNA functions in protein synthesis.
Is haplodiploidy a necessary condition for the evolution of eusociality?
a. Yes, true eusociality is found only in the hymenoptera. b. Yes, eusociality can only evolve when indirect fitness is as high as between haplodiploid sis-ters. c. No, true eusociality is also found in diploid organisms. d. No, coefficients of relatedness between sisters are never 0.75 because there are always multiple fathers.