Biology: Semester Vocab Flashcards
TO PASS MY BIOLOGY SEMESTER!!!!!!
Carry out the process of replication
protein
Bond nucleotides together to form a double helix and find and correct errors
DNA polymerase
Converts a gene into a single-stranded RNA molecule
transcription
Carries DNA’s instructions and is a link between DNA and protein
RNA
Converts an mRNA message into a polypeptide, or protein
Translation
A sequence of three nucleotides that codes for a amino acid
codon
A DNA segment that allows a gene to be transcribed
promotor
A part of DNA that turns a gene “on” or “off”
operator
First examples of gene regulation to be discovered and has three genes that code for enzymes that break down lactose
lac operon
Mutation that substitutes one nucleotide for another
point mutation
Mutation that inserts or deletes a nucleotide in the DNA sequence
frame shift mutation
The science of naming and classifying orgnaisms
taxonomy
A two part scientific naming system
binomial nomenclature
American microbiologist who was the first to establish that archaea diverged from common ancestor they share with bacteria almost 4 billion years ago
Carl Woese
(—–) are not always the result of close relationships
Physical similarities
(—–) more accurately show evolutionary relationships
Genetic similarities
Classification based on common ancestry
cladistics
The evolutionary history for a group o species
phylogeny
A common method to make evolutionary trees
cladistics
An evolutionary tree that shares a common ancestor
cladogram
A group of species that shares a common ancestor
clade
Traits shared in different degrees by clade members
derived charactistics
May confirm classification based on physical similarities
molecular data
Use mutations to estimate evolutionary time
molecular clocks
Scientists estimate mutation rates by linking (—–) and (—–)
molecular data and real time
One of the largest groups on earth and is classified by shape, need for oxygen and diseases caused
domain bacteria
Have cell walls chemically different from bacteria and are known for living in extreme conditions
domain archaea
Any disease causing agent
pathogen
Made of DNA or RNA and a protein coat
virus
Made only of single stranded RNA, causes diseases in plants, and passes through seeds or pollen
viroid
Made only of proteins, causes misfolding of other proteins, and results in diseases of the brain
prion
Infection that causes the host cell to burst
lytic infection
Infection that does no immediate harm
lysogenic infection
Made from weakened pathogens, stimulates the body’s own response, prepare the immune system for a future attack and are the only way to control the spread of viral disease
vaccine
Are poisoned by oxygen
obligate anarobes
Need oxygen
obligate aerobes
Can live with or without oxygen
facilitative aerobes
The amount of (—–) can differ between bacteria
peptidoglycon
Prokaryotes exchange genes during (—–)
conjugation
Bacteria may survive by forming (—–)
endospores
Allow plants to retain moisture
cuticle
Tiny holes in the cuticle
stomata
Allows plants to grow upright
lignin
Protects embryos from drying, wind and sun light
seed coat
An interaction in which two species benefit
mutualism
Two adaptations that prevent animals from eating plants
spines and thorns
defense chemicals
Grow close to the ground to absorb water and nutrients
nonvascular plants
Most common seedless nonvascular plants from the phylum Bryophyta
mosses
Not true mosses and belong to the phylum Lycophyta
club mosses
Occurs when pollen meets the female plant parts
pollination