Which of the following organisms is multicellular?
Animal
Bacterium
Yeast
How many cells are produced when a parent cell divides?
Two
Three
Four
Why do bacterial cells divide?
To grow
To replace damaged body parts
To reproduce
Which structure in animal, plant and yeast cells controls cell division?
Cell membrane
Cytoplasm
Nucleus
How many chromosomes are contained in the the daughter cells produced by the division of a body cell?
Half as many chromosomes as the parent cell
The same number of chromosomes as the parent cell
Twice as many chromosomes as the parent cell
A human body cell containing 46 chromosomes divides to produce two new body cells. How many chromosomes will each of the new body cells contain?
23
46
92
Which structure in animal and plant cells contains the chromosomes?
Vacuole
What change to cell division can result in the formation of a tumour?
Cells no longer dividing
Cells dividing slower than normal
Cells dividing faster than normal
When does a tumour cell become cancerous?
If it grows much bigger than normal
If it invades surrounding body tissue
If it starts dividing uncontrollably