Which of these groups is NOT monophyletic?
a. Animalia
b. Protista
c. Plantae
d. Fungi
Answer: b. Protista
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Which event could result in an inversion?
A) A 360° rotation of a chromosomal region following two double-strand breaks in a chromosome's DNA. B) A crossover between two DNA sequences in different places on the same chromosome and that are inverted repeats of each other. C) A crossover between two repeated DNA sequences that are in different places on the same chromosome and are oriented in the same direction. D) A crossover between two repetitive sequences on different chromosomes.
The most recent level of evolution in primates is considered to be in
a. brain expansion. b. behavior and culture. c. dentition. d. hand grip. e. daytime vision.
What is the trade-off in nutrient availability concerning clay soils?
A) high in anion concentration, but clay soils do not hold water well so anions leach away B) Cations are less likely to leach out of soil but are difficult for plants to extract. C) high in both anions and cations, but low pH makes root uptake of ions difficult D) Anions are less likely to leach out of the soil but difficult for plants to extract.
What kind of bonds link amino acids to form the basic sequence of a protein?
A. Disulfide B. Hydrogen C. Ionic D. Peptide E. Noncovalent