ecology

Question 1

ecology

Answer 1

study of organisms

Question 2

abiotic

Answer 2

nonliving

Question 3

biotic

Answer 3

living

Question 4

organism

Answer 4

individual with a species

Question 5

population

Answer 5

all members of a species

Question 6

community

Answer 6

several populations

Question 7

ecosystems

Answer 7

community and abiotic parts of it

Question 8

biosphere

Answer 8

are in which a biome is located

Question 9

photosynthesis

Answer 9

process on which a plant makes its own food and oxygen is released

Question 10

cell resperation

Answer 10

creation of cells and using them to move oxygen around the body and produce carbon dioxide

Question 11

Density Independent Factor

Answer 11

natural and can’t be controlled

Question 12

Density Dependent Factor

Answer 12

happens because of a population change

Question 13

Population density

Answer 13

measure of thing per square mile

Question 14

Population distribution

Answer 14

Having a population grouped

Question 15

biomagnifacation

Answer 15

increase in concentration of toxic substances

Question 16

succession

Answer 16

ability of an ecosystem to start over after a catastrophic event

Question 17

logistic growth

Answer 17

population models

Question 18

exponential growth

Answer 18

growth at an exponential rate

Question 19

bias

Answer 19

preference towards one thing

Question 20

random selection

Answer 20

a way to gather data i the ecosystem that eliminates biases

Question 21

radiometric dating

Answer 21

decay of radioactive isotope the measure the age of a rock

Question 22

relative dateing

Answer 22

method used to determine the age of rocks

Question 23

half life

Answer 23

amount of time it takes for half an isotope to decay

Question 24

epoch

Answer 24

smallest unit of geological time

Question 25

era

Answer 25

a unit of geological time consisting of 2 or more periods

Question 26

period

Answer 26

divisions of geological time lasting tens of millions of years

Question 27

artificial selection

Answer 27

selective breeding

Question 28

natural selection

Answer 28

the strong will survive

Question 29

evolution

Answer 29

cumulative changes in groups of orgnisms

Question 30

spontaneous generartion

Answer 30

idea that live derives from non-living things

Question 31

homologous structure

Answer 31

anatomically similar structure inherited from common ancestor

Question 32

analogical structure

Answer 32

can be used for the same purpose and can be superficially similar

Question 33

fitness

Answer 33

measure of relative contibution an individual trait makes

Question 34

adaptation

Answer 34

lets the organism change its ways to become more adequate in its new habitat

Question 35

trait

Answer 35

mixture of DNA

Question 36

clad gram tree

Answer 36

branching diagram the represents the proposed phylogen

Question 37

semi conservative replication

Answer 37

shows how DNA is replicated

Question 38

DNA polymerase

Answer 38

enzymes that create DNA

Question 39

RNA

Answer 39

ribonucleic acid

Question 40

messenger RNA

Answer 40

carry genetic information from the DNA to the ribosomes

Question 41

ribosomal RNA

Answer 41

essential for protein synthesis

Question 42

transfer RNA

Answer 42

adapter molecule

Question 43

RNA polymerase

Answer 43

produces primary transcript

Question 44

transcription

Answer 44

first step in gene expression

Question 45

introns

Answer 45

noncoding sections of RNA

Question 46

exons

Answer 46

any part of a gene

Question 47

codon

Answer 47

a sequence of three DNA or RNA nucleotides that corresponds with a specific amino acid or stop signal during protein synthesis

Question 48

translation

Answer 48

In molecular biology and genetics, it is the process in which cellular ribosomes create protiens

Question 49

gene regulation

Answer 49

the process of turning genes on and off

Question 50

operon

Answer 50

unit made up by linked genes

Question 51

mutation

Answer 51

act or process of mutation or changing

Question 52

mutagen

Answer 52

an agent such as radiation or a chemical substance