Specialised Cells Flashcards
TO learn
Cells
basic unit become specialised
TIssues
similar cells working together to perform a specific function
Organs
diffrent types of tissues working together to perform a specific function
Organ systems
diffrent organs working together to perform a specific function
Organism
Diffrent organ systems working together to perform a specific function
Specialised cells
Diffrent cells become speciallised to carry out specific functions.
Cilliated cells
found in the lining of the
trachea (i.e. windpipe)
and bronchi
what does cillia do
cilia are in continual flicking movement so as to move the mucus that carries dust and bacteria away from the lungs
root hair cells
hair-like projection on the root hair cell penetrates
between soil particles provides large surface area for
absorption of water and mineral salts from soil
palisade mesophyll cells
columnar (i.e. long)
shaped and with many
chloroplasts to trap
light energy for
photosynthesis
what does the jelly coat of the egg cell do?
jelly coat that changes upon
fertilisation by one sperm cell
to prevent more than one
sperm fertilising one egg cell
Egg cell cytoplasm contains?
cytoplasm contains yolk
droplets made up of protein
and fat (i.e. food stores) for
early development of embryo
Sperm cells parts for what
tail/flagellum for sperm to
swim towards egg cell to
fertilise egg cell
mid-piece contains many
mitochondria to provide
energy for tail movemen
acrosome contains enzymes
to digest the jelly coat and
cells around the egg cell
why red blod cells have no nucleus when cells mature
no nucleus when cells
mature so that more
haemoglobin protein can be
packed in the cytoplasm
How do red blood cells trasnport oxygen around the body
oxygen binds to haemoglobin
→ red blood cells’ function
to transport oxygen around
the body
