How many chromosomes are in a human skin cell?
23
23 pairs
46 pairs
Which pair of letters denotes a male?
XX
XY
YY
What is the first step in the cell cycle?
Mitosis
DNA synthesis
Cell growth
How many daughter cells are produced in mitosis?
Two
Four
One
Which is the last stage in mitosis?
Telophase
Cytokinesis
Anaphase
What happens in metaphase?
Chromosomes copy themselves
Chromosomes are pulled to each end of the cell
Chromosomes line up in the middle of the cell
Which specialised plant cell carries out most photosynthesis?
Palisade
Root hair
Xylem
Which specialised cell in plants move sugars from the leaves?
Phloem
Guard
What charts are used to compare the growth of babies?
Scatterplot
Bar chart
Percentile
What is a disadvantage of adult stem cells in medicine compared to embryonic stem cells?
They cannot differentiate into all cell types
They are expensive
They are only available when an organism is very young