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Super Quiz Science Task 1
Science
23
Science
8th Grade
12/07/2011

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Cards

Term
1.)What is a cell? When were they discovered?
Definition
Smallest structional and functional unit of living things. Discovered in the mid-1600s
Term
10.)What three statements make up cell theory? Who added the third statement?
Definition
-Three statements:
-All organisms are made up of one or more cells.
-The cell is the basic unit of all living things.
-All cells come from existing cells.
Third statement added by Rudolf Virchow
Term
11.)What happens AS a cell gets larger?
Definition
-The cell’s volume increases.
Term
12.)What happens IF a cell gets TOO large?
Definition
-The cell’s surface area will not be large enough to take in enough nutrients or pump ot enough water.
Term
13.)What is a cell membrane? What does it separate? What does it control?
Definition
The cell membrane is a protective layer that covers the cell’s surface and acts as a barrier. It serperates the cell’s contents from its environment. It controls materials going into and out of the cell.
Term
14.)What is the cytoplasm?
Definition
The fluid inside the cell and almost all of its contents.
Term
15.)What are organelles?
Definition
Structures that have specific jobs inside the cell.
Term
16.)What does DNA stand for? What does it carry?
Definition
-Deoxyribonucleic acid. It carries information needed to make new cells and new organisms.
Term
17.)What is a repository? What is the repository for DNA?
Definition
-Repository is the storage area. For DNA it’s the nucleus.
Term
18.)Why do most cells always need to have DNA?
Definition
DNA gives these cells instructions on how to make proteins.
Term
19.)What is the difference between prokaryotic and eukaryotic cells?
Definition
Prokaryotic cells don’t have a nucleus and eukaryotic cells do.
Term
2.) Who was the first person to describe cells?
Definition
Robert Hooke
Term
20.)What two categories are prokaryotic cells classified into?
Definition
Bacteria and archea.
Term
21.)How does DNA appear as in prokaryotic cells?
Definition
-As a circular molecule
Term
22.)What are ribosomes?
Definition
-Tiny round organelles made of protein and other material.
Term
23.)How much bigger are eukaryotic cells compared to prokaryotic cells?
Definition
-10 times bigger.
Term
3.)Why did he use the name cells for his discovery?
Definition
Because cells mean “little rooms” an they looked as if they were made of boxes.
Term
4.)What types of organisms have cell walls? What type doesn't?
Definition
Plant and fungi cells. Animal cells don’t have cell walls.
Term
5.)Why did Hooke believe that animals weren't made of cells?
Definition
The lack of cell walls in animal cells make them harder to see, thus, Hooke couldn’t see their cells so he thought that animals weren’t made of cells.
Term
6.)Who is Anton van Leeuwenhoek? What did he examine through microscopes?
Definition
A dutch merchant. He examined pond scum.
Term
7.)What are protists?
Definition
animalcules or single-celled organisms.
Term
8.)What shape are blood cells in fish, birds, and frogs? in humans and dogs?
Definition
Fish, birds, and frogs: oval
Humans and dogs: round and flat
Term
9.)What did Matthias Schleiden conclude? Theodor Schwann?
Definition
Matthias Schleiden concluded that all plant parts were made of cells. Theodor Schwann concluded that all animal tissues were made of cells.
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