Biology HELP!!!!!!!!!!!?

The primary function of DNA in cells is to


a. serve as a storage form for unused nucleotides.


b. occupy space in the nucleus to keep the nucleus from collapsing.


c. store information that tells the cells which proteins to make.


d. serve as a template for making long, spiral carbohydrates.





2. The two strands of a DNA molecule are held together by


a. ionic bonds. b. covalent bonds. c. peptide bonds. d. hydrogen bonds.





3. According to the base-pairing rules, guanine binds with


a. cytosine. b. adenine. c. thymine. d. guanine.





4. During DNA replication, the enzyme DNA polymerase


a. separates the two nucleotide chains in a DNA molecule.


b. constructs new nucleotide chains that are complementary to the chains in the original


DNA molecule.


c. breaks down the original DNA molecule into individual nucleotides.


d. joins two DNA molecules into a single molecule.

Biology HELP!!!!!!!!!!!?
1. c





DNA contains genes. When these genes are transcribed, mRNA is created. The mRNA is then translated into proteins by ribosomes. Therefore, DNA stores information that tells cells which proteins to make.





2. d





Hydrogen bonding occurs between the bases of the two strands.





3. a





Guanine binds with cytosine and adenine binds with thymine (uracil in RNA).





4. b





DNA pol creates a complimentary strand of DNA during DNA replication. DNA helicase is responsible for separating the two strands of DNA.
Reply:1. c


2.d


3.a


4.a
Reply:1. C. store information that tells the cells which proteins to make.


2. d. hydrogen bonds.


3. a. cytosine


4. b. constructs new nucleotide chains that are complementary to the chains in the original


DNA molecule.


(sort of -- it's a little more complicated than that on the "lagging strand" in eukaryotes)
Reply:1.- c


2.- d


3.- a


4.- b
Reply:Man, you can't answer these questions? Read the chapter.


1. c


2. d


3. c


4. b