How does RNA differ from DNA?
A) RNA is contained in the nucleus.
B) RNA doesn't contain a sugar.
C) RNA is single-stranded.
D) RNA takes part in transcription.
C
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Insects possess ____ , circulatory systems in which hemolymph completely "bathes" the organs and is not typically contained in distinct arteries or veins
Fill in the blank with the appropriate word.
What feature of a dinosaur determines whether it is a saurischian or an ornithischian dinosaur?
a. size b. habitat c. feeding preference d. pelvic bone structure e. number of feet it walks on
Which of the following is a member of the domain archaea?
a. proteobacteria b. gram positive bacteria c. methanogen d. spirochetes e. chlamydias
Aerobic respiration occurs in
A) anaerobic sludge digestion. B) primary sewage treatment. C) secondary sewage treatment. D) tertiary sewage treatment. E) water treatment.