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DNA and RNA
Deoxyribonucleic acid***Chromosomes and DNA Replication***RNA and Protein Synthesis***Mutations***Gene Regulations***Cancer
32
Biology
9th Grade
02/14/2013

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Term
What type of macromolecule is DNA?
Definition
nucleic acid
Term
What are the building blocks of DNA called?
Definition
nucleotides
Term
what is a nucleotide made of? (3 things)
Definition
Deoxyribose
Phosphate
Nitrogenous base
Term
Who discovered DNA? (4 people)
Definition
Frankln
Wilkins
Watson
Crick
Term
Chargaff's Rule
Definition
A=T
C=G
Term
how are the bases in DNA held together?
Definition
hydrogen bonds
Term
backbone of DNA
Definition
phosphate
sugar
nitrogenous base
Term
What kind of bond holds backbone molecules together?
Definition
Covalent
Term
Where is DNA found in prokaryotic cells?
Definition
cytoplasm
Term
DNA wraps around proteins called _______
Definition
histones
Term
at beginning of cell division, DNA and proteins pack together to form
Definition
nucleosomes
Term
In which phase does DNA replication occur?
Definition
S phase
Term
semi- __________ replication
Definition
conservative
Term
a gene is ____
Definition
segment of DNA expressed as proteins
Term
Difference between RNA and DNA
Definition

RNA:                  DNA:

  • ribose                               deoxyribose  
  • a,u,g,c                              a,t,g,c
  • single stranded                 double
Term
function of mRNA
Definition
makes complementary strand of DNA
Term
function of tRNA
Definition
attaches to ribosome and connects to codons to create proteins
Term
function of rRNA
Definition
translates mRNA to protein language
Term
What is transcription?
Definition
copying a part of a sequence of DNA to a complementary strand
Term
where does transcription take place?
Definition
nucleus
Term
what is translation?
Definition
Cells use info from mRNA to produce proteins
Term
what are the three stop codons?
Definition
UAA
UAG
UGA
Term
the monomer of a protein is _____
Definition
amino acids
Term
amino acids are held together with _______ bonds
Definition
peptide
Term
where does translation take place in the cell?
Definition
cytoplasm
Term
what kind of macromolecule is DNA polymerase?
Definition
protein
Term
______-->_________-->__________-->_________
Definition
DNA-->gene-->protein-->traits
Term
whats are POINT mutations?
Definition
mutations that affect a SINGLE nucleotide
Term
What is a TATA box?
Definition
region of DNA that helps initiate translation
Term
5 main causes of cancer
Definition
1.smoke
2.diet
3.mold
4.viruses
5.sunlight
Term
most common cancer for men
Definition
prostate
Term
most common cancer for women
Definition
breast
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