| A | B |
|---|
| DNA | DEOXYRIBO NUCLEIC ACID |
| DNA HELICASE | essential during DNA replication because separates double-stranded DNA into single strands |
| DNA POLYMERASE | usually work in pairs to create two identical DNA strands from a single original DNA molecule, by "reading" the existing DNA strands to create two new strands that match the existing ones |
| DNA LIGASE | joins new strand of DNA to old strand by forming new chemical bond |
| DNA REPLICATION | the process of making identical copies of DNA before cell division |
| SEMICONSERVATIVE REPLICATION | Each half of an original DNA molecule serves as a templete for a new strand, and the two new DNA molecules each have one old and one new strand. |
| DNA HELICASE | unwinds the double helix of DNA and separates the DNA strands in preparation for DNA replication. |
| DNA POLYMERASE | Enzyme involved in DNA replication that joins individual nucleotides to produce a DNA molecule |
| LEADING STRAND | the strand of DNA that is continuously synthesized into the replication fork. |
| LAGGING STRAND | The strand that is synthesized away from the replication fork , in fragments using sections called Okazaki fragments. |
| OKAZAKI FRAGMENTS | Small fragments of DNA produced on the lagging strand during DNA replication, joined later by DNA ligase to form a complete strand. |
| NUCLEIC ACIDS | Macromolecules that includes DNA and RNA |
| NUCLEOTIDE | A subunit of nucleic acids formed from a simple sugar, a phosphate group, and a nitrogenous base. |
| ADENINE | Nitrogen base that pairs with thymine in DNA |
| GUANINE | A nitrogen base found in DNA; pairs only with cytosine. |
| THYMINE | A nucleotide that pairs with adenine. Found only in DNA. |
| CYTOSINE | A nitrogenous base found in DNA; pairs with guanine |
| HYDROGEN BOND | A weak chemical bond used to hold complementary base pairs together |
| BASE PAIRS | Any of the pairs formed between complementary bases in the two nucleotide chains of DNA |
| REPLICATION FORK | A Y-shaped region on a replicating DNA molecule where new strands are growing. |
| DNA | Long Double Helix, made of Nucleotides |
| DEOXYRIBOSE | sugar in DNA |
| PURINE | composed of a double ring of six-member nitrogen-containing ring and a five-member nitrogen-containing ring joined together...includes adenine and guanine |
| PYRIMIDINE | have a six-member nitrogen-containing ring...includes cytosine and thymine |
| DNA | Long Double Helix, made of Nucleotides |
| DEOXYRIBOSE | sugar in DNA |
| PURINE | composed of a double ring of six-member nitrogen-containing ring and a five-member nitrogen-containing ring joined together...includes adenine and guanine |
| PYRIMIDINE | have a six-member nitrogen-containing ring...includes cytosine and thymine |
| DNA | controls production of proteins |
| nucleus | controls activities of cell through chromosomes |
| DNA | deoxyribonucleic acid |
| sugar (deoxyribo) & phosphate | makes up sides of of DNA double helix ladder |
| nitrogen bases | makes up rungs of DNA double helix |
| adenine | a compound which is one of the four constituent bases of nucleic acids. A purine derivative, it is paired with thymine in double-stranded DNA. |
| guanine | one of the four constituent bases of nucleic acids. A purine derivative, it is paired with cytosine in double-stranded DNA. |
| thymine | a compound which is one of the four constituent bases of nucleic acids. A pyrimidine derivative, it is paired with adenine in double-stranded DNA. |
| cytosine | a compound found in living tissue as a constituent base of nucleic acids. It is paired with guanine in double-stranded DNA. |
| hydrogen | bond between the bases that compose the rungs of DNA |
| shape of DNA | double helix |
| enzyme | a substance produced by a living organism which acts as a catalyst to bring about a specific biochemical reaction. |
| adenine, thymine, guanine, & cytosine | Four Nitrogen Bases |
| guanine | Cytosine forms a hydrogen bond with? |
| replication | The production of a new copy of an organism's genetic information which is passed on to a new cell |
| nucleotides | building units composed of DNA. Consists of the four base groups, a deoxyribose sugar and a phosphate group |
| phosphate group | A group composed of one phosphorus atom surrounded by four oxygen atoms |
| purines | A class of nucleotides that includes adenine and guanine; nitrogenous bases that have two rings of carbon and nitrogen atoms |
| pyrimidines | A class of nucleotides that includes Thymine, Cytosine, (and Uracil for RNA); nitrogenous bases that have a single ring of carbon and nitrogen atoms |
| thymine | Adenine forms a hydrogen bond with? |
| covalent bonds | What type of bond holds together the phosphates and sugars in the ladder sides of DNA? |
| hydrogen bonds | What type of bond holds together the nitrogen bases (rungs) of DNA? |
| Chargaff's rule | [A]=[T] and [G]=[C], they pair up across from one another forming two strands also called base pairing. equal amounts of adenine bonds with thymine and equal amount of guanine bonds with cytosine. |
| semi conservative | In DNA replication, each copy contains one original strand and one newly-synthesized strand |
