Shared Flashcard Set

Details

HHB 1.2 2025
Glossary flashcards
27
Biology
Not Applicable
05/08/2025

Additional Biology Flashcards

 


 

Cards

Term
DNA
Definition
deoxyribonucleic acid; molecule that holds the genetic code in organisms
Term
double helix
Definition
three-dimensional shape of a DNA molecule
Term
nucleotides
Definition
subunit of DNA consisting of deoxyribose sugar, phosphate group and a base
Term
deoxyribose sugar
Definition
pentose sugar that is a component of DNA molecules
Term
phosphate
Definition
component of DNA molecule (makes the backbone along with sugar)
Term
base
Definition
nitrogenous substance that is a component of DNA
Term
Adenine (A)
Definition
base that pairs with thymine
Term
Thymine (T)
Definition
base that pairs with adenine
Term
Guanine (G)
Definition
base that pairs with cytosine
Term
Cytosine (C)
Definition
base that pairs with guanine
Term
sugar phosphate backbone
Definition
strongly bonded strand of DNA
Term
3’-5’
Definition
strand of nucleic acid running from a sugar to a phosphate
Term
hydrogen bonds
Definition
weak chemical link joining complementary base pairs
Term
antiparallel
Definition
parallel strands in DNA that run in opposite directions (3’ to 5’and 5’ to 3’)
Term
replication
Definition
formation of copies of DNA molecules
Term
template strands
Definition
DNA strand on which a complementary strand is made
Term
DNA polymerase
Definition
enzyme that adds free nucleotides during DNA replication
Term
primers
Definition
short complementary strand of nucleotides
Term
leading strand
Definition
DNA strand that is replicated continuously
Term
lagging strand
Definition
DNA strand that is replicated in fragments
Term
ligase
Definition
enzyme that joins DNA fragments on the lagging strand
Term
PCR
Definition
Polymerase chain reaction – used to amplify DNA samples
Term
heating to 92-98oC
Definition
separates the two DNA strands
Term
cooling to 50-65oC
Definition
allows primers to bind to two ends of target sequence
Term
heating to 70-80oC
Definition
allows DNA replication with heat tolerant DNA polymerase
Term
heat tolerant DNA polymerase
Definition
Enzyme used in PCR that has an optimum temperature between 70-80oC
Term
help solve crimes, settle paternity suits, diagnose genetic disorders
Definition
examples of applications of PCR
Supporting users have an ad free experience!