specialised cells Flashcards
name 3 specialised plants cells and 3 specialised anima cells.[6]
phloem
xylem
root hair
nerve
muscle
sperm
what is cell differentiation?[2]
the process where a cell develops new sub-cellular structures inside the cell to let it perform a specific function.
adult animals
is cell differentiation common or rare in adult animals? [1]
rare
plants
Many plant are able to ———— ———- their —-. [2]
many plants are able to DIFFERENTIATE THROUGHOUT their LIFE
embryos
when does cell differentiation happen for embryos? [1]
during an organisms development
how are sperm cells specialised to perform a specific function?[2]
-the tail allows the to move towards the egg
-the middle section is filled with mitochondria to provide the sperm with needed energy to be able to travel a long distance to reach the egg cell.
how are root hair cells specialised to perform a specific function?[2]
-they have long projections that increases the surface area and allows it to absorb more water and minerals.
-they have no chloroplasts because they’re located underground so it has no access to sunlight for photosynthesis.
how are nerve cells specialised to perform a specific function?[2]
-they have lots of dendrites that makes connections to other nerve cells.
-they have long axons that carries the nerve impulse from one place to another.
how are muscle cells specialised to perform a specific function?[2]
-they contain lots of mitochondria to provide energy for the contraction
-contain special proteins that slide over eachothermaking fibres contract.
how are xylem cells specialised to perform a specific function?[2]
-they have dead cells that are broken to allow water to move through.
-the lignin helps with strengthening the cell wall.
how are phloem cells specialised to perform a specific function?
-have small holes on the end walls to allow food products to move up & down the vessel.
-they are made up of columns of living cells.
