The size of a metabolizing cell is limited by its
A. surface area-to-volume ratio.
B. nuclear size.
C. function.
D. extracellular matrix.
E. genome size.
Answer: A
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Which specialized structure is not correctly paired with its actual function?
a. gullet ? ingestion b. cilia ? food gathering c. contractile vacuole ? digestion d. cilia ? locomotion e. micronucleus - sexual reproduction
The organs that eliminate waste from the body do not include ________
A) skin B) lungs C) heart D) kidneys
A patient has a heart attack and wakes up in the hospital. He gets a visit from his doctor, who says he had to shock the patient's heart because part of it had gone into fibrillation. The doctor jokes that it could have been worse if the other part of
the heart had been in fibrillation and that the patient was really lucky. Which chambers of the heart in the patient were in fibrillation, the atria or the ventricles? What will be an ideal response?
Haldane pointed out that if he received a certain allele, the chance that one of his brothers would receive that allele would be
A. Random B. 50% C. 0% D. 100% E. 10%