chapter 1 - the science of biology

Question 1

science

Answer 1

the constantly changing body of knowledge

Question 2

biology

Answer 2

study of life

Question 3

observation

Answer 3

something observed in science

Question 4

data

Answer 4

info taken from experiments/real world scenarios or models

Question 5

inference

Answer 5

an educated guess based on prior info

Question 6

hypothesis

Answer 6

a prediction of a test/experiment

Question 7

spontaneous generation

Answer 7

the theory that life spawns in

Question 8

biogenesis

Answer 8

the synthesis of living substances by living organisms

Question 9

controlled experiment

Answer 9

experiment with controlled variables

Question 10

control group

Answer 10

group in an experiment which is the base line with no changed variables

Question 11

independent variable

Answer 11

the variable that is changed in a an experiment

Question 12

dependent variable

Answer 12

the variable that is the outcome of the experiment; i.e. in result of the ind. var

Question 13

theory

Answer 13

a scientific idea which has been proven over time and has evidence to back it

Question 14

DNA

Answer 14

deoxyriboneucleic acid; contains genetic info for cells

Question 15

stimulus

Answer 15

a signal from an organism’s environment

Question 16

sexual reproduction

Answer 16

reproduction with 2 organisms’ cells come together to make 1 organism

Question 17

asexual reproduction

Answer 17

reproduction with 1 organism making genetic code

Question 18

homeostasis

Answer 18

maintaining relatively stable internal conditions

Question 19

metabolism

Answer 19

the reactions which build/break materials

Question 20

biosphere

Answer 20

all of the living things on the earth

Question 21

light microscope

Answer 21

microscope with and ocular lens and is cheap and easy to use

Question 22

electron microscope

Answer 22

microscope which uses an electron beam and requires expensive equipment and a computer; also ~1000x the mag. of a light microscope

Question 23

how many independent variables can there be?

Answer 23

1

Question 24

what are the characteristics of life

Answer 24

have cells, reproduce, universal genetic code, grow and develop, obtain and use materials and energy, respond to the environment, maintain homeostasis, evolve as a group

Question 25

what are the two types of electron microscopes

Answer 25

transmission and scanning