Cell Structure
Macromolecules
Water Properties
Transport and Homeostasis
Hard Questions
100

This organelle controls the activities of the cell and contains DNA.

What is the nucleus?

100

This macromoleclue stores genetic information in cells.

What are nucleic acids?

100

This process is the movement of water across a selectively permeable membrane.

What is osmosis?

100

This process moves molecules from an area of high concentration to a low concentration.

What is diffusion?

100

This ratio limits how large a cell can become.

What is the surface area-to-volume ratio?

200

This organelle produces most of a cell's ATP energy.

What is the mitochondria?

200

This macromolecule is mainly used for long term energy storage. 

What are lipids?

200

This property of water allows insects to walk on its surface.

What is surface tension?

200

This type of transport requires energy from ATP.

What is active transport?

200

This happens to an enzyme when extreme heat changes its shape.

What is a denaturation? 

300

This organelle contains chlorophyll and carries out photosynthesis.

What is the chloroplast?

300

This is the main function of carbohydrates in living things. 

What is providing quick energy?

300

This property allows water to resist temperature changes.

What is high specific heat?

300

This term describes maintaining stable internal conditions in an organism.

What is homeostasis?

300

These are the reactants needed for photosynthesis.

What are carbon dioxide and water?

400

This cell structure controls what enters and leaves the cell.

What is the cell membrane?

400

These are proteins that speed up chemical reactions.

What are enzymes?

400

This is the reason water is considered a polar molecule.

What is unequal sharing of elections?

400

This type of solution causes a cell to shrink because water leaves the cell.

What is a hypertonic solution?

400

This bond forms when atoms share electrons.

What is a covalent bond?

500

This type of cell does not contain a nucleus.

What is a prokaryotic cell?

500

This element is the basis of all organic molecules.

What is carbon?

500

Hydrogen bonds are responsible for this property of water molecules sticking together.

What is cohesion?

500

This is the difference between passive and active transport. 

What is passive transport does not require energy, where as active transport does?

500

This molecule makes up most of the cell membrane.

What is a phospholipid?

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