Select the correct statement.
A. DNA is double-stranded but RNA is single-stranded, although their nucleotides are identical.
B. DNA and RNA are double-stranded molecules composed of nucleotides.
C. DNA and RNA are single-stranded molecules with dissimilar nucleotides.
D. DNA contains the genetic code, and RNA carries the coded information to the sites of protein synthesis.
Answer: D
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Which statement about chymotrypsinogen is correct?
a. It is activated by enterokinase. b. Once activated, it is involved in protein digestion. c. It is secreted by the endocrine pancreas. d. All of the above e. None of these
A pH of 5.5 would be considered
A. basic. B. acidic. C. neutral.
The three tiny bones of the middle ear are collectively known as the ________.
A. pinnas B. cerumen C. ossicles D. cochleas
An electromyograph records electrical activity in muscles
Indicate whether the statement is true or false.