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.
Answer: A
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Select a group within Bacteria that has a rare structural morphology observable with a microscope. Describe the appearance, the group that it corresponds to, and another group that would certainly be ruled out when observing such a morphology
What will be an ideal response?
The sliding-filament model of muscle contraction is described by the action of ____ pulling ____ inward
a. muscle fibers; actin filaments b. myofilaments; sarcomeres c. sarcomeres; Z lines d. actin filaments; myosin filaments e. myosin filaments; actin filaments
The human axial skeleton includes all of the following EXCEPT the
a. skull. b. ribs. c. pectoral girdle. d. sternum. e. vertebral column.
A histone code is:
A. the nucleotide sequence of an individual histone protein's gene. B. the pattern of chemical modification of the DNA wrapped around an individual histone. C. the pattern of chemical modification of an individual histone's tail. D. the number of lysines in an individual histone that are methylated. E. None of the answer choices are correct.