Key Concepts in Biology

  • Created by: sara.5
  • Created on: 16-04-18 16:39
What is the magnification for Hooke's microscope?
x30
1 of 35
What is the magnification for Van Leeuwenhoek microscope?
x270
2 of 35
What is the Resolution for Van Leeuwenhoek microscope?
0.0014mm
3 of 35
What is meant by resolution?
The smallest point between two point that can still be seen as two points
4 of 35
What is the magnification for a light microscope?
x1500
5 of 35
What is the resolution for a light microscope?
0.0001
6 of 35
What is the difference between a light and electron microscope?
Instead of light beams of electron passes a specimen to build up an image
7 of 35
What is the magnification for an electron microscope?
x2000000
8 of 35
What is the resolution for an electron microscope?
0.0000002mm
9 of 35
What is the formula for image?
Image= Magnification x Actual size
10 of 35
What is meant by a Eukaryotic cell?
A cell with a Nucleus
11 of 35
What is the function of the Nucleus in a cell?
Controls cell activity and contains genetic material
12 of 35
What is the function of the Cytoplasm in a cell?
Where chemical reaction happens
13 of 35
What is the function of the Ribosomes in a cell?
Responsible for protein synthesis
14 of 35
What is the function of the Mitochondria in a cell?
Site of Aerobic respiration (power house)
15 of 35
What is the function of the Cell Wall in a cell?
Contains cellulose which keeps cell rigid
16 of 35
What is the function of the Chloroplasts in a cell?
Contains chlorophyll, traps sunlight for photosynthesis
17 of 35
What is the function of the Vacuole in a cell?
Contains cell sap(salt and sugar) contains waste product to prevent contamination
18 of 35
What is the function of the Cell membrane in a cell?
Controls what goes in and out of the cell
19 of 35
What do cells that line the small intestine do?
Absorb food
20 of 35
What are it adaptation?
Having membranes which contain tiny fold called cilia ?
21 of 35
Why is this helpful?
This increases surface area of cells therefor there is more area for more molecules to be absorbed therefore absorption happens faster
22 of 35
What does a pancreas do?
Make enzymes to digest certain foods?
23 of 35
How are they adapted?
Enzymes are proteins so these cells are adapted by having lots of ribosomes
24 of 35
What does the wall of the small intestine do?
The muscles squeezes food along
25 of 35
How is this adapted?
Muscles squeeze food along therefore they need a lot of energy they are adapted by having many mitochondria
26 of 35
How is the cell membrane of the egg cell adapted?
-Cell membrane fuses with Sperm cell membrane after fertilisation then membrane hardens to stop other cells entering
27 of 35
How is the Jell coat of the egg cell adapted?
Hardens after fertilisation to ensure only one sperm enters
28 of 35
How is the Cytoplasm of the egg cell adapted ?
Cytoplasm is packed with nutrients to supply fertilised egg with energy/material for growth and development of the embryo
29 of 35
How is the top of the Sperm adapted?
Contains a small vacuole which has enzymes called Acrosome the enzyme breaks substances in the egg cell jelly coat allowing sperm to burrow in
30 of 35
How doe the tail of the sperm help with its function?
Tail moves from side to side allowing sperm to swim
31 of 35
Why does the sperm contain a spiral of Mitochondria?
To release a lot of energy to power the tail
32 of 35
What happens in the oviducts?
Fertilisation
33 of 35
Where do the cell lining the oviduct transport the egg cell?
Towards the uterus
34 of 35
How are the oviducts adapted?
Cilia is also covered in cell membrane and contain strands of substance that can contract and cause a wavy movement sweeping substances along
35 of 35

Other cards in this set

Card 2

Front

What is the magnification for Van Leeuwenhoek microscope?

Back

x270

Card 3

Front

What is the Resolution for Van Leeuwenhoek microscope?

Back

Preview of the front of card 3

Card 4

Front

What is meant by resolution?

Back

Preview of the front of card 4

Card 5

Front

What is the magnification for a light microscope?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Key concepts in Biology resources »