Unit Test: ONB Cells (7th)

The diagrams above represent two types of cells, an animal cell and a plant cell.

Which type of cell uses energy to carry out life processes?

• plant cell, only

• animal cell, only

• both a plant cell and an animal cell

• neither a plant cell nor an animal cell

Answer explanation

Animal cells and plant cells both need to grow and divide, move, obtain resources for respiration or photosynthesis, etc.

What type of cell is this?

• plant

• animal

• virus

• fungus

Answer explanation

This cell does not contain chloroplasts.

Plants produce sugar and release oxygen during the process of photosynthesis. Why do plants make the sugar?

• To move water from the roots to the leaves.

• To fill the large (or central) vacuole.

• To use in the mitochondria to release energy.

• To use in the nucleus as a cell membrane.

Answer explanation

Plants perform cellular respiration as well as photosynthesis.

If a living cell were compared to a factory, which part of the factory would be equivalent to the nucleus?

• a closet used to store cleaning supplies

• a computer that controls all activities

• a machine that puts pieces together

• the generator that provides energy to the entire factory

Answer explanation

How do all parts of the cell know what to do?

Which organelles in a cell break down nutrients and release energy?

• mitochondria

• chromosomes

• cytoplasm

• chloroplasts

Answer explanation

These organelles are the powerhouses of the cell.

Which part of a cell contains the genetic material and controls all the activities in the cell?

• chloroplast

• cell wall

• cell membrane

• nucleus

Answer explanation

This is the cell’s command center.

The stiff outer covering that protects and supports green plant cells is called the

• chloroplast

• cell wall

• cell membrane

• nucleus

Answer explanation

Membranes are soft. This layer is stiff.

The protective outer covering of a cell is called the

• chromosome

• chloroplast

• cytoplasm

• cell membrane

Answer explanation

It is not inside the cell.

In a green plant cell, photosynthesis takes place in the

• cell membrane

• chloroplast

• nucleus

• cytoplasm

Answer explanation

A green plant makes its own food.

What is the purpose of the cell membrane?

• It holds the cell’s hereditary information.

• It obtains energy for the cell from nutrients.

• It lets nutrients into the cell and allows other materials to leave the cell.

• It controls all activities inside the cell.

Answer explanation

The cell membrane is a soft protective layer around the cell. It allows nutrients to enter the cell. It also allows waste products to leave the cell.