What building blocks form a DNA molecule?
A) amino acids
B) nucleotides
C) fatty acid chains
D) polysaccharides
B
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What factor is NOT involved in the movement of
water through a plant? a. transpiration pull b. the cohesion of water molecules c. hydrogen bonds d. the replacement of lost water molecules e. active transport
Which of the following statements about CRP is false?
a. It is a dimer. b. It is activated by a single molecule of cAMP. c. It is activated when cellular glucose levels are low. d. It binds to the lac O1 operator. e. It activates RNA polymerase.
The outer membrane of Gram-negative bacteria enables many antimicrobial drugs to enter the cell more easily.
Answer the following statement true (T) or false (F)
Mitochondria transfer ________ energy from ________ to ATP; chloroplasts transform ________ energy into the chemical energy of ATP.
A) chemical . . . food . . . light B) nuclear . . . light . . . food C) food . . . light . . . chemical D) food . . . light . . . nuclear E) light . . . food . . . kinetic