Biology Chapter 12 DNA

Nitrogen base pairing

hydrogen bonds can form only between certain base pairs-adenine and thymine, and guanine and cytosine

Chromosomes

the coiled strands of nucleic acids that contain genetic information

What are the 2 classes of Nucleotides

Purines (AnGels) and Pyrimidines (Y)

Where are the chromosomes located

in the nucleus

nucleotides

What are fundamental structural units of nucleic acids and are composed of a phosphate, a sugar and a nitrogenous containing base

What are the 4 parts of Nitrogen Base

Adenine, Thymine, Guanine and Cyosine

4 classes or macromolecules

Carbohydrates, Lipids, Proteins and Nucleic Acides

What is the shape of DNA

Double stranded helix, twisted latter

The Double Helix/Watson and Crick's model

DNA was a double helix, which is two strands wound around each other

Is the following sentence true or false? According to the principle of base pairing, hydrogen bonds could form only between adenine and cytosine.

FALSE

What does DNA do

Stores and passes genetic information and is the code for proteins

What are the 3 parts of the Nucleotide Structure

Sugar, Phosphate and Nitrogen base

The nucleotides must be joined together in a specific order, true or false

TRUE

What is DNA?

Very long thin molecule made up of linked nucleotides that determines traits in every living organism

James Watson and Frances Crick

Which scientist used Rosalind Franklin's x-ray diffraction data to proposed the double helix structure of DNA

What is the chemical composition of DNA

adenine, thymine, guanine, and cytosine

genes

are coded DNA instructions that control the production of proteins within the cell.

replication

before the cell divides, it duplicates its DNA

What does RNA do

carries instructions for Protein Synthesis