Experiments in which electricity was discharged into a vessel containing hydrogen gas, water vapor, methane, and ammonia were conducted by ___________.

A. Pasteur
B. Watson and Crick
C. Miller and Urey
D. Meselson and Stahl


C. Miller and Urey

Biology & Microbiology

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What nucleic acid is subject to alternative splicing?

A. DNA B. rRNA C. pre-mRNA D. mRNA E. tRNA

Biology & Microbiology

The two strands of each polynucleotide chain in DNA are identical. Indicate whether the statement is true or false

Biology & Microbiology

The photoreceptors that allow for an individual's black-and-white vision are known as ________

Fill in the blank(s) with correct word

Biology & Microbiology

Infants require many nutrients early in life, including lipids such as fats. A low-fat diet for infants is not recommended because, among other things, it can affect the development of the nervous system

Why does the developing nervous system need lipids? A) Glial cells need lipids to produce the myelin sheath. B) Fats are needed for energy because infants are often on a low-carbohydrate diet. C) Lipids are needed to produce the polypeptide neurotransmitters used by neurons. D) Fats are required to generate action potentials on nerve cells.

Biology & Microbiology