Cells and Control Flashcards
Stem cells
have different functions in plants and humans
many potential uses in medicine
Growth
is a permanent increase in size
Percentile charts
can help to show if a child is growing faster or slower than is normal for their age
Examples of Specialised plant cells:
xylem
root hair cells
phloem
stoma cells
Growth in plants
divide by mitosis, just behind the tips and shoots and roots
the cells grow by enlarging
young cells have small vacuoles
Examples of Specialised Animal cells
red blood cells
nerve cells
bone cells
egg and sperm cells
Growth in Animals
a fertilised egg or zygote divides by mitosis to produce genetically identical daughter cells
Cancer Cells
abnormal cells that divide uncontrollably by mitosis to form a tumour
Cell Growth and Differentiation
growth in differentiation happen in different ways in plants and animals
When does Mitosis Happen?
growth
repair
asexual reproduction
Body Cells have two sets of Chromosomes
explain how this happens
One set of chromosomes comes from the mother and one comes from the father
Cytokinesis
cell splits into two
spindle fibres disappear and a new nuclear membrane forms
Anaphase
chromatids separate
chromatids are called chromosomes
Metaphase
Chromosomes line up during the middle of the cell
Prophase
each chromosomes consists of two Chromatids nuclear membrane breaks down
