Unit 2- Tissues, Organs And Organ Systems Flashcards
1
Q
Name 3 ways a sperm is specialised for its job?
A
It has a large nucleus, it can easily penetrate the egg and its aerodynamic.
2
Q
How are red blood cells specialised for their job?
A
They have a bi-concave shape for surface area, they contain the red pigment haemoglobin to absorb oxygen and they have no nucleus.
3
Q
What are the 3 tissues that cells are organised into? What do they do?
A
Glandular tissue (secretes digestive chemicals), muscular tissue (contracts in order to move), epithelial tissue (lines the inside and outside of the gut)
4
Q
What do guard cells do?
A
Open and close the stomata to allow for gas and solute exchange
