An -OH group is a(n) ____ group
a. carboxyl
b. hydroxyl
c. amino
d. methyl
e. carbonyl
ANSWER: b
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Use the following study to answer the following question(s): A current trend among professional baseball players is to wear braided titanium necklaces. The titanium reportedly regulates the flow of energy through the body. The player wearing the necklace then shows improved strength, tires less, and recovers more quickly.If you were to evaluate these claims using the scientific method, what would be the first step?
A. Gather testimonials. B. Evaluate the results. C. Develop a hypothesis. D. Conduct an experiment.
What organelle modifies new polypeptides and sorts proteins and lipids?
a. nucleus b. mitochondria c. peroxisomes d. lysosomes e. Golgi body
Which type of chemical bond exists within a water molecule?
A. weak B. covalent C. hydrogen D. ionic E. It depends on the temperature of the water.
The absence of a regulatory protein may inhibit the expression of both alleles of a gene. This sort of mutation is viewed as __________
a. dominant b. recessive c. cis-acting d. trans-acting