Topic 1 (temporary) Flashcards
1
Q
What is differentiation?
A
the process by which a cell changes to become specialized for its job
2
Q
How are sperm cells specialised for reproduction?
A
- it has a long tail and a streamline head to help it swim to the egg
- lots of mitochondria in the cell to provide the energy needed
- carries enzymes in its head to digest through the egg cell membrane
3
Q
How are nerve cells specialised for rapid signaling?
A
- they are long to cover more distance
- branched connections at their ends to connect to other nerve cells and form a network throughout the body
4
Q
How are muscle cells specialised for contraction?
A
- they are long so they have space to contract
- contain lots of mitochondria to generate the energy needed for contraction
5
Q
How are hair root cells specialised for absorbing water and minerals?
A
- long shaped hairs give big surface area for absorbing mineral ions and water from the soil
- ## active transport
6
Q
How are phloem and xylem cells specialised for transporting substances?
A
- form phloem and xylem tubes which transport substances such as food and water around plants
- cells are long and joined end to end
- xylem cells are hollow and phylum cells have very few subcellular structures so stuff can flow through them
7
Q
A
8
Q
A
9
Q
A
10
Q
A
11
Q
A
