When an enzyme reaches its saturation point,
A) the amount of substrate for the enzyme to act upon is very low.
B) the amount of substrate for the enzyme to act upon is very low and the amount of product produced by the enzyme decreases.
C) the amount of substrate for the enzyme to act upon is very high.
D) the amount of product produced by the enzyme decreases.
E) the amount of product produced continues to increase.
C) the amount of substrate for the enzyme to act upon is very high.
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A typical synaptic delay lasts for approximately ____
a. 0.5 to 1 millisecond b. 5 milliseconds c. 10 milliseconds d. 25 milliseconds e. 0.5 to 1 second
Which of the following factors keeps the alveoli expanded?
A. Negative intra-alveolar pressure B. Alveolar pressure being equal to atmospheric pressure C. A reduction in surfactant D. A pneumothorax E. Negative pleural pressure
Every cell is surrounded by cytoplasm.?
Indicate whether the statement is true or false
By what transport mechanism does glucose enter most cells?
A. Secondary active transport B. Primary active transport C. Diffusion through a protein channel D. Diffusion through the lipid bilayer E. Facilitated diffusion