1. CB2 – CELLS & CONTROL (p20-25) Label the motor neurone
Growth in Animals
QUESTIONS
Q1) What is the weight of a baby in the 95th percentile after 20 months?
Q2) After 36 months, what percentage of babies weigh less than 32 pounds?
Q3) What percentage of babies weigh more than 12 pounds after 4 months?
Reflex Arcs
relay neurone
sensory neurone
motor neurone
Growth in Plants
Zone of elongation
This is where the cells increase in length
effector
receptor
stimulus
Xylem
This is where water is transported up the stem
Mitosis
1. Label each stage
2. What is the purpose of mitosis?
3. How many daughter cells are produced?
4. Cytokinesis is the final stage. Draw it here:
5. What does diploid mean?
Meristem
Here is where lots of new cells are produced by mitosis
Zone of differentiation
Here is where cells specialise to get a specific job
Root Hair
These increase the surface area to absorb lots of water
Stem Cells
QUESTIONS
Q1) What does the term ‘differentiate’ mean?
Q2) What does the diagram on the left show?
Q3) What is an embryo?
Q4) How can stem cells be used in medicine?
Q5) Why are embryonic stem cells more useful than adult stem cells?
Neurones
1. Label each stage
2. What is the purpose of mitosis?
3. How many daughter cells are produced?
4. Cytokinesis is the final stage. Draw it here:
5. What does diploid mean?
Label the motor neurone

2. CB2 – CELLS & CONTROL (p20-25) Label the motor neurone
Growth in Animals
QUESTIONS
Q1) What is the weight of a baby in the 95th percentile after 20 months?
Q2) After 36 months, what percentage of babies weigh less than 32 pounds?
Q3) What percentage of babies weigh more than 12 pounds after 4 months?
Reflex Arcs
motor neurone
effector
receptor
32 pounds
relay neurone
50%
sensory neurone
95%
relay neurone
sensory neurone
stimulus
motor neurone
Growth in Plants
Zone of elongation
This is where the cells increase in length
effector
receptor 4
stimulus 1
Xylem
This is where water is transported up the stem
Mitosis
1. Label each stage
2. What is the purpose of mitosis?
3. How many daughter cells are produced?
4. Cytokinesis is the final stage. Draw it here:
5. What does diploid mean? 5
Meristem
Here is where lots of new cells are produced by mitosis 3
Zone of differentiation
Here is where cells specialise to get a specific job
interphase
prophase
metaphase
anaphase 2
Root Hair
These increase the surface area to absorb lots of water
telophase
New cells
Stem Cells
QUESTIONS
Q1) What does the term ‘differentiate’ mean?
To become specialised
Q2) What does the diagram on the left show?
That a newly fertilised egg can become any cell
Q3) What is an embryo?
A fertilised egg which will develop into a fetus
Q4) How can stem cells be used in medicine?
Replace certain cells by differentiating into new cells
Q5) Why are embryonic stem cells more useful than adult stem cells?
Embryonic stem cells can become any type of cell 2
The full number of chromosomes for an organism. It’s 46 in humans
Neurones
dendrites
muscle (effector)
axon
Label the motor neurone
nucleus
myelin sheath