The epidermis is waterproof and tough due to the activity of ________.
Fill in the blank(s) with the appropriate word(s).
Answer: keratinocytes
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NAD+ contains the B vitamin ________ as part of its structure, whereas FAD contains another B vitamin, ________, as part of its structure.
Fill in the blank(s) with the appropriate word(s).
A person who is homozygous for a mutation of the phenylalanine hydroxylase gene
A. can lead a normal life if the environment is controlled. B. cannot give blood. C. will always develop mental retardation in early infancy. D. will require phenylalanine supplements throughout life. E. Two statements are correct. They can lead a normal life if the environment is controlled by taking phenylalanine supplements.
Which of the following is TRUE of the
immediate impact of Mendel’s publication in 1866 of the basic laws of inheritance?
a. it gave Darwin the insight he needed into the mechanism of variation b. it started a genetic revolution c. it made Mendel one of the most famous scientists of his day d. it did more than of these things (a - c) e. it had no immediate impact
A lipid __________ is the most common
conformation of the membrane of living systems. Fill in the blank(s) with the appropriate word(s).