All the following are plant adaptations to low temperatures, except
A) shedding leaves at the onset of cold weather.
B) production of antifreeze molecules.
C) a shifting of Topt.
D) increased photosynthetic rate to heat leaves.
D
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The spaces that separate adjacent Schwann cells are called
a. neuroglia. b. myelin sheaths. c. nodes. d. dendrites. e. synapses.
Which of the following would not be considered part of the peripheral nervous system?
a. the eyes b. the spinal cord c. afferent neurons d. the ears e. efferent neurons
Why does extended hypoglycemia (low blood sugar) lead to confusion and difficulty thinking?
A. Glucose provides energy for brain cells. B. Unregulated pH of body fluids causes these symptoms. C. Glucose is major source of energy for non-nervous system cells. D. Glucose is required for chemical reactions in the body.
Which febrile disease with a rash has a pathogen that can cross the placenta and cause serious fetal damage?
A. Croup B. Mumps C. Rubella D. Measles (rubeola) E. Influenza