Intrinsic factor is used to aid in the absorption of
a. vitamin E.
b. vitamin C.
c. vitamin D.
d. vitamin K.
e. vitamin B12.
E
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When does lactase production begin to decline in humans?
a. Age 55 b. Age 5 c. Age 25 d. Never e. Age 46
Heritable changes in gene expression not due to changes in DNA sequences are known as _____
a. epigenetics b. methylation c. translational mutation d. differentiation e. frameshift inheritance
Ichthyosaurs were extinct aquatic reptiles distantly related to living lizards. Fossils show us that they had dorsal fins and tails, as do fish, even though their closest relatives were terrestrial reptiles that had neither dorsal fins nor aquatic tails. The dorsal fins and tails of ichthyosaurs and fish are
A. homologous. B. adaptations to a common environment. C. examples of convergent evolution. D. Three of the responses above are correct. E. Two of the responses above are correct.
The removal and analysis of a piece of tissue that is suspected to be cancerous is called a(n) ________
Fill in the blank(s) with correct word