High glucose levels decrease activity of the galactoside permease transporter. When lactose and glucose levels are high outside the cell, what will be the effect on lactose transport?
A. Lactose transport will increase.
B. Lactose transport will not change
C. Lactose transport will decrease
Ans: C. Lactose transport will decrease
Explanation: It does not make sense to transport lactose into the cell if glucose is abundant.
You might also like to view...
The oxygen released during photosynthesis directly comes from:
a. carbon dioxide b. glucose c. ribulose bisphosphate d. water e. atmospheric oxygen
The presence of a loop of Henle in nephrons is an evolutionary adaptation that enables mammals and birds to reabsorb water efficiently and produce a ____________ urine.
A. hypertonic B. osmolar C. isotonic D. hypotonic
After DNA unwinds and becomes single-stranded in a PCR reaction, the temperature is lowered to allow the ____ to
hybridize with the DNA template.
a. vectors b. primers c. tracers d. restriction enzymes e. DNA ligase
If a shoot’s tip breaks off, ____ moves into lateral buds and stimulates cell divisions
a. auxin b. gibberellin c. cytokinin d. abscisic acid e. ethylene