specialised cells and functions

only do definition not terms

differentiation

a process that involved the cell gaining new organelles in order to be suited to it’s role

stem cells

cells that can differentiate their whole life

what are the 3 important specialised human cells?

• sperm cells

• egg cells

• ciliated epithelial cells

sperm cells

specialised male s** cell involved in reproduction

egg cells

specialised female s** cell involved in reproduction

ciliated epithelial cells

type of epithelial cell

lines the surface of structures like:

• the respiratory tract

• uterus

what are sperm cell’s specialised to?

carry the male’s DNA to the egg cell for reproduction

qualities of sperm cells

• long tail

• lots of mitochondria

• acrosome has digestive enzymes

what are the mitochondria in sperm cells for?

to provide lots of energy for the cell to move from respiration

what are the long tail in sperm cells for?

help with swimming

what are the digestive enzymes ini acrosomes in sperm cells for?

to break down the outer layer of cell membrane in egg cells

what are egg cells specialised to?

accept a single sperm cell and develop into an embryo

what are qualities of egg cells?

• surrounded by a special cell membrane

• lots of mitochondria

• large size & cytoplasm

what are the special cell membranes in egg cells for?

• can only accept one sperm cell during fertilisation

• becomes inpermeable after

what are the lots of mitochondria in egg cells for?

to provide energy for developing embryo

what are the the large size & cytoplasm in egg cells for?

to allow quick and repeated divisions as the embryo grows

what are ciliated epithelial cells specialised to?

waft bacteria to stomach

what qualities do ciliated epithelial cells have?

• cilia

what are the cilias in ciliated epithelial cells for?

to waft bacteria trapped by mucus down to stomach to be killed by stomach acid