CH 1 and CH 2

Question 1

biology

Answer 1

the study of life

Question 2

characteristics of living things

Answer 2

organized on successive levels 
acquire nutrients for energy
maintain homeostasis
sense and respond to stimuli
reproduce and grow
have an evolutionary history

Question 3

atom

Answer 3

smallest unit of an element

Question 4

molecule

Answer 4

2 or more atoms of the same or different elements joined together by chemical bonds

Question 5

cells

Answer 5

the smallest unit of life: smallest unit of an organism

Question 6

tissue

Answer 6

similar cells organized into a particular pattern for a particular function

Question 7

organ

Answer 7

2 or more tissues organized in a particular pattern to carry out specialized functions

Question 8

organ systems

Answer 8

2 or more organs that perform a common task to keep the body working properly/ to maintain homeostasis

Question 9

organism

Answer 9

individual consisting of one or more cells; higher order organisms are comprised of many organ systems that function together to sustain life

Question 10

population

Answer 10

group of individuals of the same species living in a given area

Question 11

community

Answer 11

all populations of all species in a given area

Question 12

ecosystem

Answer 12

the community interacting with the physical environments

Question 13

biosphere

Answer 13

all ecosystems on earth

Question 14

classification of living organisms

Answer 14

species are grouped based on shared characteristics into successively higher taxa

Question 15

levels of classification

Answer 15

domain
kingdom
phylum
class
order
family
genus
species

Question 16

prokaryotes

Answer 16

lack a nucleus

Question 17

binomial nomenclature

Answer 17

gives organisms 2 names which become its scientific name

genus species

Question 18

scientific method

Answer 18

observation
formulation of a hypothesis
experimentation
conclusion

Question 19

variables

Answer 19

conditions that vary across the experimental subjects

Question 20

groups

Answer 20

test group

control group

Question 21

matter

Answer 21

anything that has mass and takes up space

Question 22

elements

Answer 22

the basic building blocks of matter that cannot be broken down by chemical means

Question 23

protons

Answer 23

positive charge

Question 24

neutrons

Answer 24

neutral charge

Question 25

electrons

Answer 25

negative charge