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

Biology & Microbiology

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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?

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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.

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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

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Culturing of intracellular parasites generally requires (enrichment/cell culture/low oxygen) conditions.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology