In ribose, the 2'-C has an OH attached to it
Indicate whether the statement is true or false
TRUE
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To which labeled region in the figure is a covalent bond formed between a nucleotide and an amino acid?
A. (A) B. (B) C. (C) D. (D) E. (E)
In which process are existing protein regions or domains mixed in novel combinations to produce new proteins?
a. alternative splicing b. degeneracy c. exon shuffling d. the wobble hypothesis e. aminoacylation
Marbles is a calico cat with a Manx tail. She wants to have kittens with a male calico, but can't find one. Male calicos are rare; the only ones have the sex chromosome constitution XXY. Male calicos are therefore rare because
A) all male cats have a dominant gene on the Y chromosome that masks the calico gene on the X chromosome. B) most male cats only have one Y chromosome, so it cannot be shut off. C) most male cats have only one X chromosome, so it cannot be shut off. D) male calico cats lack sex chromosomes.
Which of the following drugs are likely to reduce blood pressure: (Select all that apply.)
a. An agonist of alpha and beta adrenergic receptors b. An antagonist of muscarinic receptors c. A drug that increases sodium excretion d. A drug that blocks calcium channels on myocardial cells