C1L2: Specialised Cells Flashcards
1
Q
3 features of a nerve cell?
A
- dendrites (to connect nerve cells)
- axon (conduct electrical impulse in 1D)
- sheath (insulate impulse)
2
Q
3 features of a sperm cell?
A
- acrosome with enzymes to break egg
- tail to swim to egg
- mitochondria to provide energy for tail
3
Q
3 features of muscle cells?
A
- proteins to slide
- mitochondria for contractions
- glycogen to store glucose
4
Q
2 features of phloem cells?
A
- companion cells containing mitochondria
- sieve plates to allow sugars to flow by translocation
5
Q
Function of phloem cells?
A
transporting glucose from leaves to rest of plant
6
Q
Function of xylem cells?
A
transportation of water & mineral ions from root to leaves
7
Q
A feature of xylem cells?
A
hollow tubes strengthened by lignin
8
Q
3 features of a root hair cell?
A
- extension at end (increases SA)
- mitochondria to fuel active transport
- no chloroplasts (no light underground)
9
Q
What is translocation?
A
movement of dissolves sugars & water through phloem from leaves
