During redox reactions,
A) the loss of electrons from one molecule is called reduction.
B) electrons are lost from one substance and added to another substance.
C) protons from one molecule replace the electrons lost from another molecule.
Answer: B
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Aminoacyl-tRNA synthetases catalyze covalent addition of ________ to tRNAs.
Fill in the blank(s) with the appropriate word(s).
All behavior
(a) has a genetic component. (b) involves learning. (c) requires a conscious decision. (d) both a and c.
When would Koch's postulates be utilized?
A. to determine the cause of a new disease in a microbiology research lab B. to determine the cause of a patient's illness in a hospital microbiology lab C. to develop a new antibiotic in a pharmaceutical lab D. to formulate a vaccine against a new pathogen in a genetic engineering lab E. whenever the scientific method cannot be used to investigate a microbiological problem
The length of introns varies, but the first intron is almost always ________ and the second is usually ________
a. short; longer b. long; shorter c. spliced; retained d. retained; spliced e. Both a and d