Cell Bio Flashcards
1
Q
Algea cells
A
-wall made of cellulose
2
Q
Size eukaryotic cell
A
10-100x10-6m
3
Q
Prokarytic cell size
A
0.1-5x10-6m
4
Q
How are muscle cell adapted to function
A
- lots mitochondria
- long- muscles can contract
5
Q
How are sperm cells adapted to function
A
- Enzymes- digest cell membrane egg
- long tail and streamlines head- allow quick movement
- lots mitochondria
6
Q
How are nerve cells adapted to their function
A
- branched connectionns- connect to other cells, form networks
- axon- long- carry rapid signalling
7
Q
Root hair cell adaptations to function
A
- no chloroplasts as underground
- large sa- projections
8
Q
Prokaryotic cells are
A
-bacteria
9
Q
Euaryotic cells are
A
- plant
- algea
- fungi
- animal
10
Q
Prokaryoic cells dont have
A
- mitochondria,
- nucleus
- chloroplasts
- diff dna/nucleus -single loop, plasmid
11
Q
Structures baterial cells have
A
- cell membrane
- cell wall
- slime capsual- stick to surfaces
- plasmid DNA
- single loop dna
- pili-adhesive and reproduction
- flagellum- move
12
Q
Specialised cells
A
Has aquired diff sub-cellular structures to enable it to carry out a specific function
13
Q
Mature cell division
A
For growth and repair
14
Q
Electron microscope
A
- much higher resolution
- not incolour- but light microscope is
- high reso power
- enables cells to be studied in much greater detail
15
Q
Uses of human stem cells
A
-treatments of diabetes and apralysis
16
Q
Types of human stem cells
A
- blastacyst/embyonic
- theraputic cloning- -put nucleus of patient into egg cell- reduce rejection
- umbilical cord- store if think needed
17
Q
Phloem
A
- live cells, elengated
- translocation-food
- pourous end walls- two way flow
- cell sap
- from leaves to growing regioins in plants for immediate use or storage as starch
18
Q
Xylem
A
- dead
- no end walls
- walls strengthened with lignin
- transpiration- mineral ions and water
19
Q
Meristem-where found
A
- stem cells in plants
- tips of plants/ shoots
- roots as well
20
Q
Uses of plant stem cells
A
- easy and quick to clone plants
- rare species can be cloned to prevent extinctio
- grow crops which need special features such as disease resistance
