Plant cell structures and their functions | Starter Quiz | Oak National Academy

All living organisms are made up of the building blocks of life. These are called...

Answer explanation

Living organisms can live as one cell or millions of cells, as each cell carries out the common processes of living organisms.

Choose the structure that controls which substances can enter and leave a cell.

• nucleus

• cell membrane

• cytoplasm

• mitochondria

Answer explanation

The cell membrane is around the outside of all cells and controls which substances enter and leave.

The ___ contains the DNA in an animal cell and controls the cell's activities.

Answer explanation

All animal, plant and fungi cells store their DNA in the nucleus. It controls the cell's activities and can be seen using a light microscope when the cell is stained.

In which part of an animal cell does respiration take place?

• nucleus

• mitochondria

• chloroplast

• cytoplasm

Answer explanation

Respiration takes place in the many mitochondria within a cell. It is a process where food is used as a fuel to release energy for the cell's activities.

Plants are living organisms. Which common life processes do plants carry out at some stage in their life cycle?

• Movement

• Breathing

• Nutrition

• Thinking

Answer explanation

Plants move slowly over time and take in substances, such as carbon dioxide and water, that they need for nutrition.

Match the letter label on the animal cell diagram to the name of the structure.

• C

• cell membrane

• B

• mitochondria

• D

• cytoplasm

• A

• nucleus

Answer explanation

The nucleus contains all of the genetic information; the mitochondria carry out respiration to provide energy; the cytoplasm is where chemical reactions take place; and the cell membrane controls what enters and leaves the cell.