Which of the following occurs as an enzyme produced by a cell is secreted from the cell?
A) Exocytosis
B) Pinocytosis
C) Phagocytosis
D) Endocytosis
E) Receptor-mediated endocytosis
A
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Once a peptide has been formed between the amino acid attached to the tRNA in the P site and the amino acid associated with the tRNA in the A site, what occurs next?
A) translocation B) reading of the next codon of mRNA C) initiation D) The codon-anticodon hydrogen bonds holding the tRNA in the A site are broken.
A composite organism consisting of a fungus
with either a cyanobacterium or green alga as a partner is called a
a. mycorrhiza. b. rust. c. lichen. d. mycelium. e. chytrid.
A factor associated with SIDS is ____
a. sleep apnea b. lung cancer c. high altitude sickness d. low red blood cell count e. TB
All of the following are found in DNA EXCEPT
A) a phospholipid group. B) deoxyribose. C) a phosphate group. D) guanine. E) thymine.