What will happen to a long-day plant, such as spinach, if the light-dark pattern is interrupted by a flash of light for several days in a row during the spring?
A) The plants won't flower that season.
B) The plants are tricked into flowering earlier than usual.
C) Nothing will happen; growth and development will continue as normal.
D) The plants will be delayed in flowering.
B
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Certain medications can have the effect of decreasing potassium levels in the body. Which symptom would be consistent with a loss of potassium?
A. fatigue B. muscle weakness C. irregular heartbeat D. All of the answer options are correct.
The evolution of initiation of limb development in tetrapods is best explained by
A. a new gene mutation. B. the modification of an existing gene for a new function. C. homoplastic convergence. D. gene duplication and divergence. E. conserved genes.
Which property of water molecules is responsible for movement of water from roots to leaves in a plant?
a. hydrophobicity b. temperature stability
c. fusion d. solvent polarity e. cohesion
Culturing of intracellular parasites generally requires (enrichment/cell culture/low oxygen) conditions.
Fill in the blank(s) with the appropriate word(s).