All non-African humans today show evidence of a limited amount of past interbreeding with ________
A) Denisovans
B) Paranthropus boisei
C) Homo ergaster
D) Neandertals
E) Australopithecus sediba
D
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The function of condensin is to
A. cause the chromosomes to uncompact following mitosis. B. coat the chromosomes and condense them into heterochromatin through the compaction of radial loops C. hold the DNA to the histone proteins in the nucleosome core particle. D. trigger DNA to be compacted in a nucleosome core particle. E. none of these
Which of the following is the correct order for the synthesis of the plant cell wall, from the outermost layer to the innermost layer?
A) middle lamella; primary cell wall; secondary cell wall; plasma membrane B) primary cell wall; middle lamella; secondary cell wall; plasma membrane C) plasma membrane; secondary cell wall; primary cell wall; middle lamella D) middle lamella; secondary cell wall; primary cell wall; middle lamella E) primary cell wall; secondary cell wall; plasma membrane; middle lamella
A cell encounters a change in its environment (electrical or heat) that could be fatal. However, it is able to respond in a protective manner because this information is sent indirectly through the cell membrane to the nucleus where it stimulates the appropriate response. This is more likely a process known as
A. active transport. B. chemomodulation. C. phagocytosis. D. signal transduction.
________ is directional growth responses of plants to a unidirectional source of light.
A. Phototropism B. Thermotropism C. Dormancy D. Thigmotropism E. Gravitropism