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Chapter Ten
notes
29
Biology
9th Grade
03/11/2014

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Cards

Term
What contains the genetic material for an organism?
Definition
chromosomes
Term
What are the coded instructions for traits?
Definition
genes
Term
What is made of one long strand of DNA and special types of proteins that are tightly held together?
Definition
one chromosome
Term
What is deoxyribonucleic acid?
Definition
DNA
Term
What is DNA composed of?
Definition
sugar, phosphate, nitrogen bases
Term
What are the nitrogen bases?
Definition
adenine, thymine, cytosine, and guanine
Term
What are the two types of nitrogen bases?
Definition
purines and pyrimidnes
Term
Who were the two scientist who discovered the shape of DNA in 1953?
Definition
Watson and Crick
Term
What is DNA shaped like?
Definition
double helix
Term
What are the sides of the ladder in DNA made of?
Definition
alternating phosphates and sugar
Term
The rungs of the ladder in DNA are made of what?
Definition
nitrogen bases
Term
How are the rungs of the DNA ladder held together?
Definition
with hydrogen bonds
Term
What are the three parts of a nucleotide?
Definition
phosphate group, sugar (deoxyribose), and nitrogen base
Term
What are the steps to forming a nucleotide?
Definition
Chromosomes--> DNA--> Nucleotide
Term
How does DNA replication work?
Definition
DNA unzips and makes a copy of itself
Term
When is DNA copied?
Definition
during interphase prior to mitosis and meiosis
Term
How does DNA unzip?
Definition
like a zipper
Term
What is a mutation?
Definition
a permanent change in the DNA sequence
Term
What involves a single nucleotide?
Definition
point mutation
Term
What is ribonucleic acid?
Definition
RNA
Term
What are the characteristics of RNA?
Definition
single stranded, it's sugar is ribose, bases are Adenine, uracil, guanine and cytosine
Term
What does the "You" in "You Are Single" for RNA stand for?
Definition
Uracil is a base
Term
What does the "Are" in "You Are Single" for RNA stand for?
Definition
Ribose is the sugar
Term
What does the "Single" in "You Are Single" for RNA stand for?
Definition
Single strand of nucleotides
Term
What are the three types of RNA?
Definition
messenger, ribosomal, and trnasfer
Term
What type of RNA carries information from DNA in the nucleus to the cytoplasm?
Definition
messenger
Term
What type of RNA binds to mRNA and uses its information to assemble amino acids?
Definition
ribosomal
Term
What type of RNA delivers amino acids to the ribosome to be assembled into proteins?
Definition
transfer
Term
What is the flow of genetic information?
Definition
DNA (transcription), RNA (translation), and protein
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