Post-translational modifications of proteins may include the _____
A) removal of introns
B) addition of a 5' cap
C) addition of a poly-A tail
D) addition of carbohydrates to form a glycoprotein
D
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In what way do birds differ from mammals?
a. They lack clavicles and pectoral muscles. b. They have 12 pairs of cranial nerves. c. They have unidirectional airflow through the lungs. d. They have a closed circulatory system.
The bond in table salt (NaCl) is ____
a. polar b. ionic c. covalent d. double e. nonpolar
Dr. Ling, the famous brain surgeon, removes a portion of the skull during surgery. Which of the meninges does she see first?
A) ventricle B) pia mater C) dura mater D) arachnoid
Ribosomes are very small non-membranous organelles that can either exist freely in the cytoplasm or be embedded in the endoplasmic reticulum of a cell; they are associated with the synthesis of
a. lipids. b. proteins. c. nucleic acids. d. carbohydrates.