Two amino acids are bonded together to form a dipeptide by which type of reaction?
a. condensation
b. oxidation reduction
c. hydrolysis
d. decomposition
e. acid-base
ANSWER: a
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Hillary is 8 years old and has neuronal ceroid lipofuscinosis, also known as Batten disease. It is autosomal recessive. She was fine until age five, when she began to lose her vision and stumble. She had learning difficulties in school and was diagnosed at age six. Hillary may only live into her twenties, experiencing dementia and seizures. Her younger brother Jaden, age six, is healthy, as are her parents. The probability that Jaden is a heterozygote is
A) 1/8. B) 1/4. C) 1/3. D) 2/3.
There are how many different kinds of amino acids in proteins?
a. 3 b. 6 c. 12 d. 20 e. 28
____ is denser than ____
a. Heartwood; sapwood b. Heartwood; softwood c. Sapwood; hardwood d. Sapwood; heartwood e. Softwood; hardwood
Ferns are not limited to wet areas due to the presence of
A. flowers. B. leaves. C. roots. D. vascular tissue.