Prentice Hall Life Science 2005 Chapter 2 Living Things

Front 1

What is a cell?

Back 1

The cell is the basic building block of all organisms.

Hint 1

All organisms are made up of 1 or more of them.

Front 2

What is a microscope?

Back 2

A microscope is a tool you use to look at very small things.

Hint 2

Why do you use a microscope?

Front 3

What is a unicellular organism?

Back 3

A unicellular organism is an organism made up of one cell.

Hint 3

How many cells does this Paramecium have?

Front 4

What is a multicellular organism?

Back 4

A multicellular organism is and organism made of many cells

Front 5

What is the most abundant chemical in cells?

Back 5

Water is a chemical. There is more water inside of cells than any other chemical.

Hint 5

Everything inside a cell floats in it.

Front 6

What do cells have to use in order to grow and repair themselves?

Back 6

Cells repair themselves by using

ENERGY.

Hint 6

Gasoline in a car gives it the ____________to run.

Front 7

What is a stimulus?

Back 7

A stimulus is a change in the environment that you react to, like pulling your hand away if you get burned or closing your eyes to bright light.

Hint 7

Every action to you makes you react. When you are sad you ____________.

Front 8

What is reproduction?

Back 8

Reproduction is the ability organisms to make more of themselves. It is a characteristic of all living things

Hint 8

Front 9

What is Spontaneous Generation?

Back 9

Spontaneous Generation is the false theory that life can occur spontaneously from nothing.

Hint 9

Its not true. You can't get anything from nothing.

Front 10

What did Francesco Redi do?

Back 10

Francesco Redi showed that maggots don't spontaneously generate from rotting meat. They come from eggs laid by the flies on the meat that hatch as maggots .

Hint 10

Flies were able to get into the uncovered jar.

Front 11

What did Louis Pasteur do?

Back 11

He disproved spontaneous regeneration. He showed that bacteria couldn't spontaneously appear in sterilized (cleaned) broth. It had to come from other bacteria.

Hint 11

The bacteria grew in the non sterile (unboiled) broth.

Front 12

What is an Organism?

Back 12

Any living thing.

Front 13

What are six characteristics of living things?

Back 13

1. They are made of cells.
   
2. They obtain and use energy.
   
3. They grow and develop.
   
4. They reproduce.
   
5. They respond to environment.
   
6. Adapt to environment
   

Front 14

Development

Back 14

Development is the process of change that occurs during an organism's life to produce a more complex organism.

Hint 14

You can do a lot more now than when you were a baby

Front 15

What is a eukaryotic cell?

Back 15

Eukaryotic cells are cells that have a nucleus.

Front 16

What are prokaryotic cells?

Back 16

Prokaryotic cells are cells that don't have a nucleus.

Front 17

What is Homeostasis?

Back 17

Homeostasis is the maintenance of stable internal conditions by an organism

Front 18

What is a heterotroph?

Back 18

Heterotrophs are organisms that can't make their own food.

Hint 18

They have to find it or get it (like getting strawberry milk from the refrigerator)

Front 19

What is an autotroph?

Back 19

An autotroph is an organism that can make its own food.

Hint 19

Most plants don't have to hunt.

Front 20

Spontaneous Generation

Back 20

Spontaneous Generation is the mistaken idea that living things can arise from nonliving sources