Guaranteed Success! Graded A+ (A Must Pass!) (80 Questions with
Answers)
structure of DNA - composed of nucleotide
sub units - has sugar - phosphate backbone (deoxyribose and phosphate)
DNA - deoxyribosenucleic acid
nitrogen - containing bases - adenine, guanine, thymine, cytosine
adenine, guanine, thymine, cytosine - held together by hydrogen bonds
adenine = thymine
guanine = cytosine - always pair together (DNA)
DNA replication - - 1 parent has 2 strands of separates
-each strand used to make new strand
- 2 daughter molecules is composed of 1 "old"/ "new" strand
origin - 2 parent strands separate at ________ of replication
RNA - single stand nucleic acid
uracil, ribose - RNA contains ________ instead of thymine and ________ instead of deoxydie
mRNA, tRNA, rRna - 3 types of RNA
mRNA (messenger) - carries genetic info copied from DNA
tRNA (transfers) - deciphering code words
, rRNA (ribosomes) - translation of cells use to make protein
gene codes/ specific proteins - transcription, translation
synthesis of mRNA - transcription takes place in nucleus --> under DNA
DNA --> RNA - transcription
RNA -->protein - translation
mutation - change in genetic material (based on 1 pair), change genes protein, change in DNA causes
altered mRNA (different amino acids added to polypeptide chain)
frameshift mutations - does not fix the addition or deletion
pathologic - germs that cause diseases
polymerase chain reaction - PCR
plasmid - DNA molecule that naturally exists/ antibiotic resistance
genetically modified organism - genetically altered (by techniques)
transgenic organism - genes transplanted form species to another
restriction enzyme - cut a DNA molecule
PCR - copy segments of DNA
stem cell - develop into many cell types