4.1 DNA and RNA-The Nucleic Acids

1			The letters A,G,T, and C represent
			A)	phosphate groups.
			B)	sugar groups.
			C)	nitrogenous bases.
			D)	protein molecules.
2			The type of bond between the A-T and G-C pairs is
			A)	polar covalent.
			B)	non-polar covalent.
			C)	ionic.
			D)	hydrogen.
3			Proteins which serve as "spools" to help organize chromatin are called
			A)	clathrin.
			B)	histones.
			C)	cytokines.
			D)	chaperones.
			E)	polymerases.

4.2 Genes and Their Actions

4			Where would you find an anticodon?
			A)	on mRNA
			B)	on a ribosome
			C)	on tRNA
			D)	on DNA
			E)	on a protein
5			If one strand of a DNA molecule has the sequence CTTTAT what will the RNA codons be when transcribed?
			A)	GAAATA
			B)	GAAAUA
			C)	CAAAUA
			D)	CATAUU
6			Translation occurs in the ________________.
			A)	peroxisomes
			B)	nucleosomes
			C)	spliceosomes
			D)	ribosomes
			E)	nucleus

4.3 Replication and the Cell Cycle

7			The term semiconservative refers to _______________.
			A)	transcription
			B)	translation
			C)	DNA replication
			D)	protein synthesis
8			The cell cycle refers to
			A)	the life cycle in a normal cell.
			B)	cell division only in a normal cell.
			C)	the life cycle of a cancer cell.
			D)	cell division in a cancer cell.
9			Mitosis functions to
			A)	form sex cells.
			B)	increase cell number for growth.
			C)	create variability in the population.
			D)	All of the above.

4.4 Chromosomes and Heredity

10			When a red flower crossed with a white flower produces a pink flower, which of the following is demonstrated?
			A)	codominance
			B)	polygenic inheritance
			C)	pleiotrophy
			D)	incomplete dominance