Primary succession may be seen:a
on new lava or on sand dunes.
b. after a fire.
c. when farmland is abandoned.
d. only in tropical rain forests.
e. in any community that has periodic disturbances.
A
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Most of the carbon in amino acid biosynthesis comes from
A) citric acid cycle intermediates. B) citric acid cycle intermediates and glycolysis products. C) glycolysis products. D) glycolysis intermediates and products.
Enzyme specificity refers to the
(a) specific name of each kind of enzyme. (b) fact that enzymes catalyze one particular substrate or a small number of structurally similar substrates. (c) effect of temperature on enzyme activity. (d) effect of pH on enzyme activity.
Gene regulation during sporulation in Bacillus subtilis involves both temporal and spatial control.
Answer the following statement true (T) or false (F)
Which type of plant hormone generally acts as a growth inhibitor?
A) auxins B) gibberellins C) cytokinins D) abscisic acid (ABA)