Which of the following would have the most surface area assuming the same volume?
A) a golf ball
B) a perfect sphere
C) a cube
D) a tube
D
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Answer the question using the accompanying figure. In the diagram of a root tip, the structure labeled "2" is the ____
a. quiescent center b. zone of cell division c. zone of elongation d. root cap e. zone of maturation
Which base pairing is incorrect?
A) G-C B) U-A C) A-G D) A-T
Biodiversity is described in terms of genetic, community, and landscape diversity.
Answer the following statement true (T) or false (F)
Most eukaryotic cells only express 20–30% of the genes they possess. The formation of heterochromatin maintains the other genes in a transcriptionally silent (unexpressed) state
Which histone modification directs the formation of the most common type of heterochromatin? (a) H3 lysine 4 methylation (b) H3 lysine 9 methylation (c) H3 lysine 14 methylation (d) H3 lysine 27 methylation