In the first few seconds of skeletal muscle contraction, what is the main mechanism by which ATP is replenished?
A. Oxidative phosphorylation rapidly generates ATP from glucose.
B. Myoglobin catalysis produces ATP.
C. Glycolysis produces ATP from glycogen.
D. Energy and phosphate are transferred from creatine phosphate to ADP.
E. Oxidation of fatty acids into ATP occurs in the mitochondria.
Answer: D
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The gray commissure of the spinal cord surrounds the central canal.
Answer the following statement true (T) or false (F)
The mesoderm forms
A) muscle. B) epidermis. C) the brain. D) the lining of the digestive tract. E) respiratory epithelium.
Select the incorrect association
a. chemoreceptor/oxygen concentration. b. mechanoreceptor/skeletal muscle stretch. c. nociceptor/solute concentration. d. photoreceptor/light. e. thermoreceptor/heat and cold.
The smell and taste of foods are influenced by all of the following except
A. a person's mood. B. the temperature of the food. C. the texture of the food. D. the appearance of the food. E. all of these influence the smell and taste of foods.