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Living Environment 9 > Unit 1: Introduction to Science and Biology > Flashcards

Unit 1: Introduction to Science and Biology Flashcards

1
Q

What Is Science

A

Science is an organized way of gathering and analyzing evidence about the natural world

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2
Q

What are the goals of science

A

To provide natural explanations for events in the natural world and to understand patterns in nature and to make useful predictions about natural events

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3
Q

Observation

A

Process of noticing and describing events

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4
Q

Inference

A

A logical interpretation based on prior knowledge and experience

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5
Q

Prediction

A

An educated guess about a future event

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6
Q

Steps of the experimental design

A

Observing and asking questions
Forming a hypothesis
Test the hypothesis
Collect and analyze data
Draw a conclusion
Communicate your results

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7
Q

Quantitative data

A

Obtained by counting or measuring

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8
Q

Qualitative data

A

Are descriptive and involve characteristics that cannot usually be counted

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9
Q

Control groups

A

Control groups are exposed to the exact same conditions except for one independent variable

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10
Q

Experimental groups

A

Are exposed to an independent variable

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11
Q

Independent variable

A

The one that is deliberately changed and graphed on the X axis

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12
Q

Dependent variable

A

The one that is observed and changes as a result of the independent variable. Graphed on the Y axis

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13
Q

Microscopy

A

The technical field of using microscopes to view samples and objects that cannot be seen with the unaided eye

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14
Q

Types of microscopes

A

Stereo or dissecting microscopes
Compound light microscopes
Electron microscopes

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15
Q

Compound Light microcope

A

The term light refers to the method by which light transmits the image to your eyes
The term compound deals with the microscopes having more than one lens

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16
Q

Rules of the microscope

A

Image under microscope is inverted, turned upside down, flipped over, and enlarged

The field of view under the low power (100x) is brighter than the field of view under the high power

The field of view under the high power (400x) is smaller and darker

Only use the fine adjustment knob under high power

If the slide is moved in one direction, the image on the slide moves in the opposite direction

Always start on low power

Always center specimen before moving to high power

Total magnification= Objective magnification X Ocular magnification

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17
Q

The Metric System

A

The international system of units (SI) is the system used by scientists

Many SI units are units of the metric system

18
Q

The basic unit of length is

A

meter

19
Q

The basic unit of mass is

A

gram

20
Q

The basic unit of time is

A

second

21
Q

The basic unit of volume is

A

liter

22
Q

The basic unit of temperature is

A

celsius

23
Q

Characteristics of living organisms

A

Metabolize
Grow/Develop
Reproduce
Death
Evolve

24
Q

Graphing rules

A

2 lined graphs for two dependent variables

Do not start at the origin

Circle the plotted points

Don’t put a zero in the origin

The scale must stay the same, but it can be different on the X and Y axis

25
Q

The Lab Safety rules

A

No horsing around

No eating or drinking

Do not smell unknown substances directly

Wear safety goggles when heating substances

Test tubes must be pointed away from faces when they are being heated

25
Q

Homeostasis

A

Self regulating process by which an organism tends to maintain stability while adjusting to conditions that are best for its survival

25
Q

Niche

A

An organism’s role within an ecosystem: its food, shelter, and its behavioral role

25
Q

Pathogen

A

An organism causing disease to its host

25
Q

Biology

A

The word biology is derived from the greek words bios, meaning life, and logos, meaning study, and is defined as the study of life and living organisms

26
Q

Metabolism

A

The chemical reactions in the body’s cells that change food into energy

27
Q

Locate the numbers 10 and 20 on a meter stick what is the SI unit of measurement between those numbers? How many of these units are there in the whole stick

A

Deca meters

Ten

28
Q

1 milligram= ____ grams

A

.001 grams

29
Q

1 micrometers= ____ grams

A

0.1

30
Q

0.000001 liter=

A

Microliter

31
Q

What is the total magnification when low power is used?

A

10x X 10x = 100x

32
Q

What is the total magnification when high power is used?

A

10x X 40x = 400x

33
Q

_________ contains the _________ lens

A

Eyepiece
Ocular

34
Q

Light source. projects Light ______ through the diaphragm

A

upwards

35
Q

50,000 micrometers = ______ meters

A

0.05

36
Q

Orientation of an image changes after being put under a microscope or after having the objective lens be changed?

A

Just being put under a microscope

37
Q

The technique of lowering the cover slip at an angle is used

A

reduce the formation of air bubbles

38
Q

READ THINGS CAREFULLY YOU

A

CLOWN

Living Environment 9 (1 decks)

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