Describe how the length of a long night allows for flowering in short-day plants.
What will be an ideal response?
Pfr suppresses flowering in short-day plants. At the end of day, Pr has been transformed to Pfr. During the long night, Pfr degrades to Pr, allowing flowering to occur.
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Arthropods' have nervous systems composed of a nerve net
Indicate whether the statement is true or false.
All EXCEPT which of the following is true of the
spinal cord? a. houses connections between sensory and motor neurons b. serves as a reflex center c. its gray matter serves as passageway for nerve tracts to brain d. is covered with meninges e. is enclosed by vertebrae
Why is allosteric regulation important to a cell?
A) It allows the cell to control how much of a metabolic product is produced. B) It allows the cell to control how much activation energy is required for enzymatic reactions. C) It reduces the cell's need for coenzymes. D) It allows the cell to switch to other sources of energy besides ATP.
Which of the following organisms is a prokaryote?
A. algae B. archaea C. fungus D. protozoa E. both archaea and protozoa