At the tip of each branch, the ____________ cover(s) the shoot apical meristem
A. bundle sheath
B. leaf primordia
C. flower bud
D. node
E. internode
B
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The tree above is based on which type of traits and what is the genus name for the most recent horse?
A. Genetic (DNA): Orohippus.
B. Morphological: Equus.
C. Molecular: Equus.
D. Genetic homology: Pliohippus.
E. Morphological: Hyracotherium.
The term that best describes all of the chemical reactions of a cell, including acquisition and use of molecules and
energy, is ____.
a. metabolism b. anabolism c. catabolism d. energy budget e. thermodynamics
The osmoregulatory/excretory system of an earthworm is based on the operation of _____
A) protonephridia B) metanephridia C) Malpighian tubules D) nephrons
Which of the following is TRUE concerning the structure and function of enzymes?
A. All enzymes bind cofactors necessary for their function. B. An apoenzyme is a combination of a cofactor bound to a holoenzyme. C. Enzymes can function at a wide range of pH. D. Competitive inhibition of an enzyme occurs when an inhibitor binds to an allosteric site on the enzyme. E. After an enzyme has catalyzed a reaction, it resumes its original shape and can interact with a new substrate molecule.