Cells

A student wants to examine the organelles of cells that make up a leaf. How can the student see the organelles?

• with eyeglasses

• with eyes alone

• with a hand lens

• with a microscope

Which structure controls most of the activities in animal and plant cells?

• nucleus

• cytoplasm

• mitochondria

• chloroplast

Which statement is true?

• A plant cell has organelles, but an animal cell does not.

• An animal cell has a cell wall, but a plant cell does not.

• A plant cell has chloroplasts,but an animal cell does not.

• Plant and animal cells have membranes, which are the same as cell walls.

What is the function of the cell membrane?

• It supports the cell.

• It contains cell organelles.

• It makes food for the cell.

• It controls what enters and leaves the cell.

Clear, jelly-like substance that surrounds the cell is

• cytoplasm

• nucleus

• chloroplast

• mitochondria

A scientist makes a model of a plant cell. Which parts should she include in her model? Select THREE answers.

• stem

• seed

• nucleus

• cell wall

• chloroplast

How do scientist know that plants and animals are made up of millions of cells?

• Plants and animals are living things.

• Cells are the building blocks of all living things.

• Plant cells and animal cells have similar structures.

• Plant cells and animal cells can be observed with microscopes.

An animal cell is....

• rectangular

• circular

• triangular

• square

A plant cell is...

• square

• rectangular

• circular

• triangular