The dense portion of some cells containing nucleic acids is called the

Which organelles are more numerous in more active cells than in less active cells?

A strucutre that is found in plant cells but not in animals cells is a

The first scientist to see animalcules, or tine living things, was

A change in an organism's environment that causes a reaction is called a(n)

The grain-line organelles on which proteins are made are called

The region between the cell membrane and the nucleus is called the

Which scientist discovered that all plants are made of cells?

An organism's ability to maintain stable internal conditions is called

Which of the following is not made of cells?

Energy, __________, living space, and stable internal conditions are basic needs of living things.

________ are the basic unit of structure and function in living things.

The major gases present in the atmosphere today are ________ and oxygen.

A belief in _____ was disproved when Francesco Redi performed experiments to show that flies do not arise from meat.

An organism whose cells contain nuclei is called a ______.

An organism is a(n) ________ if it can manufacture its own food.

_________ was the first scientist to use the term cell.

Chloroplasts are found only in the cell of ______ and some other organisms.

The ability to clearly distinguish the individual parts of an object is called __________.

__________ are traces of ancient organism preserved in rocks.

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