Which type of plant hormone promotes fruit ripening?
a. ethylene
b. jasmonates
c. gibberellins
d. brassinosteroids
e. abscisic acid
A
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Members of the ____ phylum have bilaterally symmetrical larvae, but exhibit secondary radial symmetry as adults,
usually organized around five rays, or "arms."
a. Hemichordata b. Echinodermata c. Cnidaria d. Arthropoda e. Chordata
Spliceosome components are recruited to 3? and 5? splice sites by SR proteins bound to what DNA sequences?
What will be an ideal response?
Which of the following represents an exchange reaction?
A. AB ? A + B B. A + B ? AB C. AB + XY ? AX + BY D. X + Y ? XYD
Which of the following statements correctly describe(s) the role or roles of heat in biological reactions?
a. heat from the environment is necessary for substrates to get over the activation energy barrier b. the kinetic energy of the substrates is increased as the amount of heat in the system is increased c. increasing the amount of heat in a system will always increase the rate of enzyme-catalyzed reactions d. the 1st and 2nd choices are correct e. the 2nd and 3rd choices are correct