When oxygen is unavailable during heavy exercise what process do muscle cells use for energy generation?
A. Glycolysis coupled with lactate fermentation
B. Anaerobic respiration
C. Glycolysis coupled with alcohol fermentation
D. Aerobic respiration
Answer: A
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How do endotherms and ectotherms derive most of their body heat?
A. Both ectotherms and endotherms derive most of their body heat through metabolic processes. B. Ectotherms derive most of their body heat through metabolic processes, while endotherms derive most of their body heat through their environment C. Ectotherms derive most of their body heat through their environment, while endotherms derive most of their body heat through metabolic processes. D. Both ectotherms and endotherms derive most of their body heat through their environment. E. Ectotherms derive most of their body heat through their fur, while endotherms derive most of their body heat through insulating scales.
Tibetan people have ____ in their blood despite living at high altitude
a. less oxygen b. more erythropoietin c. less erythropoietin d. more hemoglobin e. less hemoglobin
Which of the following is properly matched?
a. compact bone tissue; light weight b. spongy bone; matrix of dense concentric rings c. red marrow; mostly fat d. yellow marrow; major site of blood cell formation e. none of these
All poxviruses that infect humans are zoonoses.
Answer the following statement true (T) or false (F)