Organelles called ________ contain enzymes that digest worn-out parts of cells.

A plant’s central vacuole functions in

When molecules move through a cell membrane from an area of greater concentration to an area of lesser concentration by way of a carrier protein, it is called

All living things are able to maintain stable internal conditions, whether they are unicellular, or complex, multicellular organisms. This property is called

Objects that are moving are said to possess

The process of lowering the activation energy of a reaction is

Objects that are not actively moving but have the capacity to do so are said to possess

Which organism does not carry out photosynthesis?

Light energy arrives at earth in tiny packets called

Photosynthetic pigments are embedded into the membranes of flattened sacs within chloroplasts called