Are volcanoes alive? Give two reasons why or why not.
No. Because they don't reproduce and they don't need energy.
100
What are two things you can find on an animal cell but not on a plant cell? What do these parts do?
Cilia and Flagella help a cell move.
100
What are mitochondria?
They provide cells with energy by using cellular respiration.
100
What is a selectively permeable membrane?
It's a membrane which chooses which materials can go in and out of the cell.
100
What's Mr. Krahn's favourite number?
33
200
What can living things also be called?
Organisms
200
What are two things you can find on a plan cell but not on an animal cell? What do they do?
Chloroplasts make food and a cell wall helps protect and support the cell.
200
What are ribosomes?
They produce proteins which the cell needs to grow, repair itself, and reproduce.
200
What is diffusion?
It's the movement of molecules from an area of high concentration to an area of low concentration.
200
What is the best sports team in the universe?
The Montreal Canadiens
300
Is yeast alive? (Give at least two reasons to support your answer)
Yes, it responds to its environment, reproduces, makes waste...
300
What is most of the cell made of?
Cytoplasm
300
What is the endoplasmic reticulum?
It carries materials through the cytoplasm.
300
What is osmosis?
It is the diffusion of water through a selectively permeable membrane.
300
What is the difference between rough ER and smooth ER?
Rough ER has ribosomes attached to it.
400
What are the two parts of cell theory?
1. All living things are made of one or more cells.
2. All new cells come from cells that already exist.
400
What does the nucleus do?
It controls all the activities happening inside the cell.
400
What is the Golgi apparatus?
It stores proteins and puts them into packages so they can be sent to other parts of the cell.
400
Why do stores spray their vegetables with water?
It's so that the water can enter the plant because of osmosis. This ensures that the cells have the right amount of Turgor pressure to keep the plant healthy.
400
What's Mr. Krahn's favourite colour?
Purple
500
What are the six characteristics of living things?
1. Made of cells
2. Reproduce, grow, repair themselves
3. Require energy
4. Respond to the environment
5. Have a life span
6. Produce waste
500
A scientist finds a cell with two nuclei. Why does it have two nuclei?
It is about to reproduce and form two cells.
500
What do lysosomes do?
They patrol and clean the cytoplasm by breaking down old parts and bacteria.
500
What would happen to a cell if it received too much water? (think of a balloon)
There would be too much Turgor pressure and the cell membrane would get too weak. The cell would burst and die.
500
An electric train is going 40 km/h north. The wind is blowing 60 km/h south. Which way is the train's smoke blowing?