chapter 1 - the science of biology Flashcards

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1
Q

science

A

the constantly changing body of knowledge

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2
Q

biology

A

study of life

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3
Q

observation

A

something observed in science

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4
Q

data

A

info taken from experiments/real world scenarios or models

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5
Q

inference

A

an educated guess based on prior info

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6
Q

hypothesis

A

a prediction of a test/experiment

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7
Q

spontaneous generation

A

the theory that life spawns in

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8
Q

biogenesis

A

the synthesis of living substances by living organisms

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9
Q

controlled experiment

A

experiment with controlled variables

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10
Q

control group

A

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

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11
Q

independent variable

A

the variable that is changed in a an experiment

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12
Q

dependent variable

A

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

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13
Q

theory

A

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

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14
Q

DNA

A

deoxyriboneucleic acid; contains genetic info for cells

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15
Q

stimulus

A

a signal from an organism’s environment

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16
Q

sexual reproduction

A

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

17
Q

asexual reproduction

A

reproduction with 1 organism making genetic code

18
Q

homeostasis

A

maintaining relatively stable internal conditions

19
Q

metabolism

A

the reactions which build/break materials

20
Q

biosphere

A

all of the living things on the earth

21
Q

light microscope

A

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

22
Q

electron microscope

A

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

23
Q

how many independent variables can there be?

A

1

24
Q

what are the characteristics of life

A

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

25
Q

what are the two types of electron microscopes

A

transmission and scanning