Which one of the following is not a major plant hormone?
A. auxins
B. brassino-steroids
C. ethylene
D. cytokinins
E. ethanol
E. ethanol
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Root hairs on a root develop _____
A) on the entire root surface B) before the cells elongate C) after the cells elongate D) on the root cap
Which of the following characteristics of protein degradation in eukaryotic cells is not true of protein degradation in bacterial cells?
A. Proteins with an Arg residue at their N-termini have short half-lives. B. Proteins are degraded by a large, barrel-shaped protease. C. Proteolysis is ATP dependent in regulated protein degradation. D. Protein degradation is directed by the covalent attachment of ubiquitin.
The best way to prevent desertification is to avoid farming in areas subject to ____
a. flooding b. deforestation c. acid rain d. high winds and periodic drought e. topsoil buildup
The ant Myrmecia pilosula is found in Australia and is named bulldog because of its aggressive behavior. It is particularly interesting because it carries all its genetic information in a single pair of chromosomes. In other words, 2n = 2
(Males are haploid and have just one chromosome.) Which of the following figures would most likely represent a correct configuration of chromosomes in a metaphase I cell of a female? A) A B) B C) C D) D E) E