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Where is the genetic material contained in most cells in the body?
What is the name of structure A in the diagram?
Body cells normally have two copies of each chromosome. This gives them a full set of DNA. They are called...
Which process forms new body cells?
What is the correct order of the stages of mitosis?
Interphase, Prophase, Anaphase, Metaphase, Telophase, Cytokinesis
Interphase, Metaphase, Prophase, Anaphase, Telophase, Cytokinesis
Interphase, Prophase, Metaphase, Anaphase, Telophase, Cytokinesis
Prophase, Interphase, Metaphase, Anaphase, Telophase, Cytokinesis
In which stage of mitosis do spindle fibres pull the chromosomes apart?
In which stage of mitosis do the chromosomes line up in the centre of the cell?
In which stage of mitosis do new nuclei form in the cell?
Which stage of mitosis is shown in the diagram?
Select the true statements.
Mitosis produces genetically identical cells.
Mitosis produces 4 daughter cells.
Mitosis produces diploid cells.
Mitosis produces haploid cells.
Mitosis is used for growth and repair.
Cancer is caused when cell division continues to happen uncontrollably.
What is the name of the tip of a plant root where most cell division happens?
A baby is in the 60th percentile for weight. What percentage of babies of the same age weigh either the same or less than this baby?
The graph is a percentile growth chart of boys aged from 0 to 1 years.
A baby boy who is 9 months old weighs 72. kg. What percentile is the baby in?
What are stem cells?
Cells that are designed to do a particular job.
Cells that contain a full set of chromosomes.
Cells that contain only half a set of chromosomes.
Cells that are undifferentiated.
Stem cells can be found in early human embryos.
Stem cells cannot be found in adults.
What are the parts of the central nervous system in humans?
Which type of neurone carries electrical signals through the CNS?
Why are some axons on a motor neurone surrounded by a myelin sheath?
To make the axon longer
To act as an electrical insulator
To connect to other neurones
To protect the cell from pathogens
The diagram shows a relay neurone.
What is the name of the missing label?
What is the name of the connection between two neurones?
Chemicals called _________________ diffuse across the synapse and set off a new electrical signal in the next neurone.
A bee stings a person's finger causing them to move it away from the bee. What part of the reflex arc is the bee sting?
A reflex arc passes through a conscious part of the brain.