Scientific Method & Chemisty Of Life Flashcards

1
Q

Observation

A

Asking questions based on the use of one or more of the 5 senses to perceive the natural world

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2
Q

Hypothesis

A

A testable explanation of your observations

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3
Q

Experiment

A

Testing the hypothesis under controlled conditions

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4
Q

Inference

A

Logical explanation based on prior knowledge

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5
Q

Controlled experiment

A

Experiment in which all variable are kept unchanged except one

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6
Q

Manipulated variable

A

The variable that is changed between the control group and the experimental group

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7
Q

Independent variable

A

Manipulated variable

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8
Q

Responding variable

A

The factor that is observed and responds to the manipulated variable (what we count or measure)

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9
Q

Dependent variable

A

Responding variable

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10
Q

Control group

A

The group that is being tested under normal conditions

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11
Q

Experimental group

A

The group that is being tested under new or experimental conditions

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12
Q

Analyze data

A

Analyzing data to see it supports or refutes the hypothesis

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13
Q

Quantitative data

A

Counting or measuring. Expressed as numbers

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14
Q

Qualitative data

A

Descriptive, characteristics that cannot be counted or measured

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15
Q

Conclusion

A

Determining the validity of a hypothesis based on the data in the results that you collected during the experiment

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16
Q

Scientific theory

A

A well tested explanation that unifies a broad range of observations

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17
Q

Scientific law

A

What scientists expect to happen every time under certain conditions but does not explain why

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18
Q

Curiosity

A

Scientists ask questions about what they observe, results of studies lead to new questions

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19
Q

Skepticism

A

Scientists question existing ideas and hypothesis, they do not believe ideas without evidence

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20
Q

Open mindedness

A

Scientists must be able to accept new ideas that they may not agree with

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21
Q

Creativity

A

Scientists need to think creatively to design experiments that provide good data

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22
Q

Peer review

A

Scientists publish their findings to be reviewed by other scientists who look for mistakes or other problems

23
Q

Bias

A

A certain preference or point of view that is personal rather than scientific

24
Q

Biology

A

The study of life

25
Q

Cell

A

Basic unit of life

26
Q

Unicellular

A

Organisms that are made up of one cell

27
Q

Multicellular

A

Organisms that are made up of many cells

28
Q

Sexual reproduction

A

Cells from two different parents combine to form the first cell of the new organism

29
Q

Asexual reproduction

A

A new organism has a single parent

30
Q

Cell division

A

Single celled organism divides in half

31
Q

Budding

A

A portion of the parent organism splits off the form new organism

32
Q

Deoxyribonucleic acid

A

The directions for inheritance are copied and carried by DNA

33
Q

Differentiation

A

Different cells of multicellular organisms perform different functions

34
Q

Metabolism

A

The chemical reactions involved in building up or breaking down materials to carry out life processes

35
Q

Photosynthesis

A

NRG(light) + H2O + CO2 = O2 + CHO

36
Q

Cellular respiration

A

CHO + O2 = CO2 + H2O + NRG(atp)

37
Q

Stimulus

A

A signal to which living things react

38
Q

Homeostasis

A

When conditions inside an organism are kept within certain limits

39
Q

Evolution

A

The ability of a species to change over time to better adapt to their environment

40
Q

Organic chemistry

A

The study of all compounds that contain bonds between carbon atoms

41
Q

Monomer

A

Small repeating units that fit together to form a polymer

42
Q

Polymer

A

Large molecules that are formed by joining together many monomers

43
Q

Carbohydrates

A

Made up of carbon (C), Hydrogen (H), and oxygen (O) atoms

44
Q

Monosaccharides

A

Single sugar molecule (glucose, galactose, fructose)

45
Q

Polysaccharides

A

Monosaccharides combine to form polysaccharides (starch, glycogen, cellulose)

46
Q

Lipids

A

Made mostly from C and H. Not soluble in water. Fats, oils, waxes, steroids

47
Q

Nucleic acid

A

Store and transmit genetic info. Made up of H O C N P

48
Q

Nucleotide

A

Monomer of a nucleic acid made up of sugar group, Phosphate group, and nitrogen base

49
Q

Deoxyribonucleic acid

A

(DNA) double strand of nucleotides sugar group-deoxyribose

50
Q

Ribonucleic acid

A

(RNA) single strand of nucleotides sugar group-ribose

51
Q

Proteins

A

Regulate cell processes, control the rate of reaction, form bones and muscles, transport substances into or out of cells, help fight disease and more. Made of H O N C

52
Q

Amino acid

A

Monomer of a protein (building blocks of proteins)

53
Q

Science

A

How we learn about the natural world and the body of knowledge we have collected about the natural world

54
Q

Characteristics of living things

A

Made of cells, reproduce, based on a genetic code, grow and develop, use materials and NRG (energy), respond to their environment, maintain stable internal environment, change over time as a group