How many different kinds of RNA codons encode amino acids?
A. 3
B. 72
C. 61
D. 64
E. 120
Answer: C
Biology & Microbiology
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Oxytocin is a hormone that is involved with increasing contractions during childbirth. The action is
binding to membrane receptors and the result is increasing sodium and calcium. Oxytocin is most likely a
a. peptide or protein. b. steroid. c. carbohydrate. d. prostaglandin. e. fatty acid derivative.
Biology & Microbiology
The loss of an electron by a molecule is called ____________________
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
If a cell includes a mixture of variable numbers of wild-type and mutant organelles, this condition is known as ________
Fill in the blank(s) with correct word
Biology & Microbiology
In the accompanying figure, the cell layer that contains xylem is labeled as:
a. 1 b. 2 c. 3 d. 4 e. 5
Biology & Microbiology