Practice Questions

TLS Online TPP Program

#Question id: 454

Which statement is false about most metabolic pathways?

#Applied Microbiology

Most pathways are reversible under physiological conditions.
Pathways serve to increase the efficiency of energy transfers.
The rates of pathway reactions vary to respond to changing conditions.
The enzymes that catalyze reactions in metabolic pathways generally catalyze only a single step.

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TLS Online TPP Program

#Question id: 2066

#Biochemistry

Which of the following statements describes a characteristic feature of a carrier protein in a plasma membrane?

TLS Online TPP Program

#Question id: 2067

#Biochemistry

Which of the following would likely diffuse through the lipid bilayer of a plasma membrane most rapidly?

TLS Online TPP Program

#Question id: 2068

#Biochemistry

Which of the following molecules dramatically increases the rate of diffusion of water across cell membranes?

TLS Online TPP Program

#Question id: 2069

#Biochemistry

Which of the following processes includes all of the others?

TLS Online TPP Program

#Question id: 2070

#Biochemistry

The sodium-potassium pump is called an electrogenic pump because it:

TLS Online TPP Program

#Question id: 2071

#Biochemistry

Diffusion of ions across membranes through specific ion channels is driven by: