The methanogenic archaeans are ____.
A. aerobes
B. facultative anaerobes
C. strict aerobes
D. facultative anaerobes
E. strict anaerobes
Answer: E
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An octopus "tastes" with:
a. its mouth b. its nose c. receptors on its head d. its tentacles e. its skin
Which hormone establishes and maintains normal metabolism?
a. epinephrine b. aldosterone c. oxytocin d. PTH
e. thyroid hormoneRNA differs from DNA in many ways, including
DNA contains deoxyribose and RNA contains ribose. DNA contains thymine and RNA contains uracil instead of thymine. All are correct. DNA is double stranded and RNA is single stranded. RNA can catalyze some chemical reactions and DNA cannot
Which mechanism is NOT used by ncRNAs to bind to other molecules?
A. Complementary base-pairing between the ncRNA and RNA B. Complementary base-pairing between the ncRNA and DNA. C. A stem loop structure in the ncRNA binds to a specific protein structure. D. A stem loop structure in the ncRNA binds to a specific DNA sequence. E. Several stem loop structures form a shape that binds to a small molecule.