____________________ have two binding sites for tRNA to allow the formation of peptide bonds. Fill in the blank(s) with the appropriate word(s)


ANS: Ribosomes

Biology & Microbiology

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According to studies by Norman Terry and coworkers, some plants can perform a version of

bioremediation of selenium in wastewater by

a. converting selenium to a form that kills waterfowl. b. using selenium to make a necessary supplement for humans. c. converting selenium into a relatively nontoxic gas. d. storing selenium in the soil. e. increasing the selenium concentration in the water.

Biology & Microbiology

The DNA of an organism is made up of subunits called ________.

A. histones B. amino acids C. polymerases D. mRNA E. nucleotides

Biology & Microbiology

Rigor mortis occurs when ____

a. ATP levels fall b. calcium levels rise c. potassium levels fall d. acetylcholine stimulates contraction e. ADP is produced

Biology & Microbiology

The p21 and p15 proteins are examples of

a. Cdk inhibitors. b. cyclins. c. oncogenes. d. growth factors.

Biology & Microbiology