Chapter 2 - Cells

The diagram shows a single-celled organism called Euglena. Which labelled structures would also be found in an animal cell?

• cell membrane, chloroplast, nucleus

• chloroplast, cytoplasm, nucleus

• cell membrane, cytoplasm, nucleus

• cell membrane, cytoplasm, large permanent vacuole

The diagram shows some of the blood vessels and other structures in the human body. The blood vessels shown are all parts of the same ________.

• cell

• tissue

• organ system

• organ

Answer explanation

Read the question carefully! Yes, blood vessels are organs but the blood vessels shown in the diagram are PARTS OF THE SAME organ system. Which is the CIRCULATORY SYSTEM.

A photograph shows a plant cell nucleus measuring 2 mm across. If the magnification of the cell is x500, what is the actual size of the nucleus in mm? (include the unit in your answer)

Using this image, what organelle is A?

• Cell Wall
• Large Central Vacuole
• Mitochondria
• Chloroplast

Cell wall and cell membrane are synonymous (they mean the same thing)

• True

• False

The nucleus does all of the following -

• Send instruction to make proteins

• Contains genetic information, DNA

• Controls all cellular activities

• Provides energy to all cells

Answer explanation

The nucleus contains chromosomes which are made from DNA. The nucleus is the control centre of the cell. It controls ALL cellular activities including the production of proteins such as enzymes, hormones, antibodies etc.

I make proteins for the cell. What am I?

• ribosome

• cell membrane

• nucleus

• chloroplast

Gel-like substance that holds all organelles in place -

• Chloroplast

• Call wall

• Cytoplasm

• Lysosomes

What organelle is this??

• cell wall

• chloroplast

• mitochondria

• nucleus

• cell membrane

What is the function of a chloroplast?

• makes proteins for animal cells

• allows materials in and out of the cell

• provides structure and support

• absorbs sunlight for photosynthesis