A Controlled experment allows a researcher to isolate and test a single virable

A kilogram is approx. equal to 2.2 pounds

A meter is a little longer than a yard

An astronaunt would expect her weight to be different on the moon

A milliliter is equal to cc, ml, cubic centemeter

A meter Contains 100 cm.

The weight of an object is the measure of the pull of gravity

0-100 is freezing to boiling on the celcus scale

Living orginsims produce new orginsims of the same species by reproduction

All living orginsims must obtain and use energy

The ability to react to something in the enviroment is called irritability

The metric system is based ot scaled on the powers of 10

Recorded observations are called data

The ability to reproduce your results is an important part of science.

The first step to the scientific method is to observe the problem

Sexual reproduction is nessary because it provides for verity in the offspring

The amount of matter in a substance determines its mass

Scientists measure temp. in degrees Celsius

The basic unit of liquad volume in metric is the liter
The unit measure for length is the meter

The information that you can see, hear, or smell in an experment is called data

Biology is the study if all living things

In outer space you can expect that your mass will stay the same.

There are at least 3 types of microscopes

Never Test more that 1 varable

The general term for Catabolism and anabolism us Metabolism

The life span of each organism ends up with death

The 5 branches of biology are Botanists, Zoology, Miabiology, Palentology,Ethology

Photosynthesis- Process in which autotrophs make their own food usuing the energy in light, CO2 and H2O

3 parts of the cell theory:
1.all cells come from pre existing cells
2.all living prginsims are made up of cells
3. cells are the basic unit of structure and function of a living organism

What is the difference between a plant cell and an animal cell?
A plant cell has chloroplast and some other organelles that an animal cell doesn’t. A plant cell does a process called photocenthesis which animal cell doesn’t

A nucleus is found in Eukaryotes

Ribosomes- make proteins
Cromosomes- DNA
Mitochondira- Transform energy from food into more useful substances in the cell
Lysosmoes- Break down molecules within the cell

2 methods for materials to move through cells:
1. Osmosis
2. Diffusion

Active transport requires energy

Water will travel from an area of high concentration to low contration when seprated by a semi permible membrain.

If red cells are added to water they will explode

Another name for a cell eating a particle is Phagocyte.

When a cell drinks a liquid it is called pimocytosis

The core the atom neucleus

The building block of all matter in the universe is mostly empty space.


9c = 5f – 160 Centigrade to Fahrenheit
K = C + 273 Kelvin to Centigrade
675 – 5f – 160 F to C

The basic unit of all matter is the Atom

When elements combine to form substances consisting of to or more different atoms, Chemical Compounds are produced

2 kinds of chemical Bonds
H2O, NaCl

An acid is a compound that releases hydrogen ions

A base Is a compound that releases Hydroxide ions

The most important aspect of the water molecule is polar
The basic Groups of organic compounds found in living organisms.
1. Protons
2. Carbohydrates
3. Fats (liquids)
4.Nucleic Acid

Carbohydrates- Organic compound containing carbon, hydrogen, and oxygen, or sugars and the body’s main source of energy

Proteins- Amino acids

Fats are made of – A long chain of carbon atoms with a corbox of a ylic acid on the end
Fat Molecule:

C-C-C-C- = O

The 3 major roles of Lipids in living organisms:
1. Form membranes
2. Chemical messengers
3. Store energy

The primary cellular energy source for almost all living things is the sun

The 4 elements that make up most living organisms:
1. Carbon
2. Hydrogen
3. Oxygen
4. Nitrogen

Mixture- A substance composed of 2 or more elements or compounds that aren’t chemically combined

A chemical formula for a simple acid: H20

A chemical formula for a simple base: NaOh -* NA+) + Oh-

2 kinds of nucleic acids: RNA (ribonucleic acid) DNA deoxyribonucleic

Pure water has an equal number of acids and base molecules. 7ph

The range of a ph scale is 0-14

Catalyst- A substance that speeds up the role of a chemical reaction

Ex of Saturated Fat- Found in meat and dairy products.