View the animation below, then complete the quiz to test your knowledge of the concept.

1		Which of the following combinations are correctly matched?
			A)	70S – ribosome
			B)	anticodon – mRNA
			C)	codon – tRNA
			D)	A and B
			E)	A, B, and C
2		Which of the following occurs as the ribosome shifts down the mRNA by a distance of one codon?
			A)	the tRNA that was in the A site picks up another amino acid
			B)	the tRNA that was in the A site releases the growing polypeptide chain
			C)	the tRNA that was in the A site moves into the P site
			D)	the tRNA that was in the P site moves into the A site
			E)	the tRNA that was in the P site picks up another amino acid
3		A certain polypeptide is 100 amino acids in length. During translation of this polypeptide, how many amino acids entered through the A site of the ribosome?
			A)	1
			B)	9
			C)	50
			D)	99
			E)	100
4		The large ribosomal subunit joins the translation initiation complex after the small subunit has already joined.
			A)	True
			B)	False
5		Elongation of the polypeptide chain is terminated when a stop codon enters the P site of the ribosome.
			A)	True
			B)	False