Which of the following is an unusual event that occurs as trichomes differentiate?

a. DNA replication
b. endoduplication
c. cell expansion
d. mitosis
e. regulation of the cell cycle


ANSWER: b

Biology & Microbiology

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The researchers continued to characterize the new phosphatase. When the total concentration of phosphatase [Et] is at 2 nM, and the concentration of substrate, phosphotyrosine, is at 30 µM, then V0 = 600 nM s-1

What is the Km for this phosphatase? A. 1 µm B. 10 µm C. 100 µm D. 1 µm s-1 E. 1 µm s-1

Biology & Microbiology

A hydrogen bond between the side groups (R groups) of two different monomer subunits in a single

strand of a protein would be considered part of the ____ structure of the protein.

a. primary b. secondary c. tertiary d. quaternary e. linear

Biology & Microbiology

The amount of energy that flows through a detrital food web is _________that which flows through a grazing web

a. the same as b. greater than c. less than d. the sum of e. the difference of

Biology & Microbiology

Movement of soluble organic material through sieve

tube members occurs through a. translocation. b. active transport. c. cohesion-tension. d. transpiration. e. facilitated transport.

Biology & Microbiology