Year 9 Cycle 1 Triple Science Unit B2 Knowledge Checker

What process does a multi-cellular organism use to replace its damaged body cells?

• mitosis
• meiosis
• replication
• transcription

Tags

NGSS.HS-LS1-4

Stem cells are

• cells that grow uncontrollably.
• undifferentiated and can develop into many types of cells.
• cells that never go through cell division.
• only found in embryos.

Tags

NGSS.HS-LS1-4

Which of the following cells is undifferentiated?

• cardiac muscle cell
• nerve cell
• liver cell
• stem cell

Tags

NGSS.HS-LS1-4

How many chromosomes do human cells have?

• 22

• 23

• 44

• 46

Chromosomes are arranged in .....

• 23 pairs

• 22 pairs

• 46 pairs

• 44 pairs

The correct order for the cell cycle is......

• chromosomes double in number, chromosomes separate, cells divide

• chromosomes separate, chromosomes double in number, cells divide

• cells divide, chromosomes double in number, chromosomes separate

• chromosomes double in number, cells divide, chromosomes separate

In plants, stem cells are formed all the time in the .....

• meristems

• chloroplasts

• mitochondria

• nucleus

The production of identical offspring from a plant stem cell is called ...............

• cloning

• mitosis

• meiosis

• clowning

Embryonic stem cells have been removed and .........

• grown into differentiated cells

• grown into plant cells

• grown into human beings

• grown into zygotes

If a "parent cell" has 46 chromosomes and divides by mitosis........

• daughter cells will have 46 chromosomes

• daughter cells will have 23 chromosomes

• daughter cells will have 92 chromosomes

• daughter cells will have no chromosomes