week 1

Question 1

objective observations

Answer 1

observations that involve counting or measuring, repeated and consistently interpreted by different observers

Question 2

subjective observations

Answer 2

observations that are specific to the observer, may not be interpreted in the same way by different people

Question 3

hypothesis

Answer 3

tentative explanation of cause and effect based on observed phenomena

Question 4

independent variable

Answer 4

“cause” of observed phenomena, variable that is being changed in an experiment

Question 5

dependent variable

Answer 5

the “effect” of observed phenomena, variable that is being measured in an experiment

Question 6

control

Answer 6

the variable that stays the same

Question 7

prokaryote/prokaryotic cells

Answer 7

found in bacteria and archaea
unicellular and lacks a nucleus and membrane-bound organelles
contains ribosomes

Question 8

eukaryote/eukaryotic cells

Answer 8

unicellular in protists, and multicellular in plants, animals, and fungi
has nucleus, nuclear membrane, and membrane-bound organelles

Question 9

bacteria

Answer 9

important for nitrogen fixation (converts nitrogen in atmosphere)
decomposers - break down dead organisms to turn into organic materials
used in the production of cheese and animals

Question 10

what are the two types of bacteria?

Answer 10

photosynthetic bacteria and chemosynthetic bacteria

Question 11

photosynthetic bacteria

Answer 11

get their energy from light
lacks chloroplasts

Question 12

chemosynthetic bacteria

Answer 12

get their energy from oxidation of inorganic substances
contain chloroplasts

Question 13

bacilli

Answer 13

rod shaped bacteria

Question 14

cocci

Answer 14

small sphere shaped bacteria

Question 15

spirilla

Answer 15

corkscrew-shaped bacteria

Question 16

chlorophyll a

Answer 16

blue-green algae