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What are the six characteristics of living things?
- life span
- reproduce, repairm and grow
- multi celled
- respond to their environment
- require energy
- produce waste
The _________ is the control centre.
The _________ holds the contents of the cell in place and acts as a gatekeeper.
Most of the cell is ___________, a water fluid that contains everything inside the cell membrane and outside the nucleus.
________ are food factories of the plant cell. They contain molecules of a green chemical.
Cells live with other cells in like groups called ________.
How big is the average cell?
Three-hundredths of a millimeter wide
Where are cells located in your body?
In the whole body
How many cells are there in your body?
Between 50 and 100 trillion
Which one of these actions is not performed by animal cells?
The microscopes in the science lab have a maximum magnification of _________.
The transmission electron microscope uses __________ to reflect off of a specimen allowing for a digital three-dimensional umage to be created.
Some of the best early microscopes were made by ___________________in the 1930s.
Anton van Leeuwenhoek
Light microscopes can magnify up to ______________ and allow us to see the different organelles inside the cell.
2 000 000x
The addition of the second lens in the compound light microscope allowed images to be viewed ______________ larger.
1 000 000x
____________ occurs when molecules move from an area of low concentration to an area of high concentration.
What helps the cell move?
Cilia (Tiny Hairs)
What helps the flagellum move?
What are two main ideas in the modern cell theory?
- 1.All cells arise from already existing cells.
- 2.All organisms are made of one or more cells.
List the microscopes that were made first to last.
- 1. Single-lens Microscope
- 2. Compound Light Microscope
- 3. Transmission Electron Microscope
- 4. Scanning Electron Microscope
Groups of organs that have related functions are?
Organisms that are only visible under a microsccope.
Unicellular organisms that are neither plants nor animals.
Made of the strand or protein and cell fragments that remain after invaders have been attacked by white blood cells.
Organisms that are among the most primitive and also most plentiful on earth.
Invading cells all have distinctive molecules call _________ on their cell membranes or protein coats, which antibodies can attach to.
_______ are found in both fresh and salt water.
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