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91 Cards in this Set

  • Front
  • Back

8 characteristics of life

Cells, organization, reproduce, energy, respond, change throughout time, homeostasis, grow

Cell

Basic unit of life, smallest considered living

Multicellular

More than one cell

Unicellular

One cell

Prokaryotic

No nucleus (bacteria)

Eukaryotic

Do have a nucleus

Tissue

Group of cells w/ similar abilities, allow an organ to function

Organ

Structure made of a group of tissues that carry out a job w/in organ system

Organ system

A group of organs working together to carry out a function within an organism

Stimulus

An event that evokes a response in a living organism, physical or chemical change, internal or external environment

Response

The direct reaction caused by the stimulus

Homeostasis

Stable internal environment​ that the body strives to maintain

Metabolism

The breakdown of nutrients to create energy

Autotroph

Create own energy

Heterotroph

Gain energy through metabolism (consumer)

Photosynthesis

Sunlight converted into energy

Growth

Cell division and development (enlargement)

DNA

Heredity info, what is transferred during sexual reproduction

Gene

A trait, short segment of DNA containing genetic code for one trait

Sexual reproduction

Takes 2 organisms

Asexual reproduction

Only one cell or organism

Zygote

First cell of a multicellular organism

Evolution

Change over generations, whole species

Adaptation

Change in a living organism to adjust. Individual

Natural selection

Organisms w/ certain traits have higher chance to live and reproduce successfully

Where does all life's energy ultimately come from?

The sun

Biology

The study of life

Kingdom

6 divisions of all living things

Domain

3 major subdivisions of all living things

Organelles

W/in cells, structures that carry out certain functions so the cell can live

Biological molecule (molecule)

W/in organelles, chemical compounds providing structure for movement and energy

What are the 6 kingdoms

Animalia, plantae, fungi, protista, archaea, bacteria

What are the 3 domains

Bacteria, archaea, eukarya

2 examples of a heterotroph

Bacteria , human

What are the 11 steps of scientific method?

1- make observations


2-ask a question/state the problem


3-research and gather info


4-make a hypothesis


5-design an experiment (control etc.)


6-perform experiment


7-make observations again (lab data)


8-record data


9-organize data in graphs


10-make a conclusion


11-share

Qualitative data

Words

Quantitative

Numbers

Hypothesis

A prediction

Independent variable

Only one, what the experimenter changes

Dependent variable

What you measure, effected by independent variable

Control group

Normal condition, used to compare

Experimental group

Changed condition

Constants

Variables that stay the same

Inference

Making a conclusion based on previous knowledge not observation

Bias

Letting what you think influence data/experiment

Observation

Using your senses to collect data

How do you fix bias?

Do multiple trials, use more sources when researching

Metric in order

Tera, 3 giga, 3 mega, 3 kilo, hecto, deka, base, deci, centi, milli, 3 micro, 3 nano, 3 Pico

What are the 2 kinds of diaphram? What is the difference? What are they used for?

Disk diaphragm, iris diaphram. They look different. To control the about of light.

Biochemistry

Chemicals of life

Botany

Plants

Genetics

Heredity

Pathology

Diseases

Histology

Tissues

Taxonomy

Classification or scientific naming

Anatomy

Structure of organisms

Cytology

Study of cells

Paleontology

Fossils

Microbiology

Very small organisms that must be magnified in order to study them

Ecology

The relationship between living things and their environment

Zoology

The study of all animals

Exobiology

Possible extraterrestrial live

Anthropology

Mans cultural habits

Biology

All living organisms

Physiology

Function of living things

What is another name for the metric system? Abbreviation?

SI or international system

What are two reasons scientists use the metric or si system

Easy conversion rate of 10 and it's known internationally

What are the advantages to the light microscope? Disadvantages?

Adv: Better/higher resolution, can be used on living organism, control the amount of light dis: less magnification

What are advantages of an electron microscope? Disadvantages?

Adv: more magnification, can see inside 2d or outside 3d images disadvantages: less resolution, can not be living

What are the two EMs? (electron microscopes) what kind of image do they produce? How do they work? Highest Mag.?

SEM: Scanning, 3D of the outside, coat of metal-beam of electrons-project onto fluorescent screen,100,000x


TEM: Transmission, 2D of the inside, cut into thin slice-beam of electrons transmitted through the specimen-magnetic lenses enlarge onto a photographic plate or screen, 200,000x

Why are EMs (electron microscope) often seen in color?

Scientists add artificial colors with a computer

What are the two LMs (light microscopes)? Why?

SLM: single: one lense


CLM: compound: multiple lenses

Who discovered the SLM? CLM?

SLM: early romans


CLM: Jansens

How do you properly Carry a microscope?

Hold by arm, hand on base

How do you properly clean microscope lenses?

In a circular motion with lense paper

How do you find the total magnification of a microscope? What is the typical ocular magnification?

Ocular x objective = total. 10x

What are the two reproductions? What do they involve? Example?

Asexual: one organism. Genetic replica of parent. Bacteria


Sexual: two organisms sharing DNA. Combination of parents. Animals and plants

Why do all organisms need energy?

To carry out the characteristics of life

What is the piece on a microscope that rotates the objectives?

Nosepeice

What part of the microscope hold the eyepiece or ocular in place?

Body tube

What are 3 scientific terms to describe a human?

Multicellular heterotrophic eukaryote

What are 3 words to describe bacteria?

Unicellular heterotrophic prokaryote

How does growth in organisms occur?

Cell division and enlargement (development)

What is an example of homeostasis?

Body temperature, blood pressure, water levels, etc

Microscope

Instrument used to see small things

Mass

Amount of matter

Volume

Amount of space

Length

Distance between 2 points

Time

Interval between 2 events

Temperature

Average kinetic energy of molecules

Density

Mass/volume