A stroke volume of 70 mL/cycle in a heart with a pulse of 72 cycles per minute results in a cardiac output of about _____
A) 5 liters per minute
B) 50 milliliters per minute
C) 0.5 liters per minute
D) 50 liters per minute
E) 500 liters per minute
Answer: A
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Digesting chromatin with a high concentration of DNAse I would yield fragments of what approximate size?
A. 200 B. 400 C. 600 D. 1100
Antibody molecules are very rigid in structure
Indicate whether this statement is true or false.
Cancer can originate in any area of the body. However, death rates are often highest for those cancers involving organs within the digestive, cardiovascular, and respiratory systems. This is most likely because
A. these organs play vital roles in maintaining homeostasis. B. there are no treatment options for these types of cancer. C. these organs are larger and therefore harder to treat. D. these organs are all involved in processing food, which is vital to our survival.
Based on their effects, which pair below would NOT be expected to be active at the same time and place?
A) prostaglandin and nitric oxide B) endocrine and exocrine glands C) hormones and target cells D) neurosecretory cells and neurotransmitters