Biology

HideShow resource information
What are pathogens?
Microorganisms that enter the body and cause diseases
1 of 28
Explain how viruses replicate within your body
They replicate themseleves by invading your cells and producing many copies of themselves
2 of 28
What are antigens?
Unique molecules on the surface of cells/pathogens etc
3 of 28
Why are cultures of microorganisms grown at temperatures no higher than 25 degrees in school labs?
To prevent harmful pathogens from growing
4 of 28
What is epidemic?
Big break out of disease
5 of 28
What is pandemic?
When a disease spreads all over the world
6 of 28
What is a vaccination?
A vaccination involves injecting small amounts of inactive microoganisms
7 of 28
How can you prevent contamination?
Sterilise equipment before use e.g. petri dishes
8 of 28
What might the inappropriate use of antibiotics lead to?
You body becoming resistant to it
9 of 28
Why would a course of antibiotics not be suitable for treatment such as the flu?
Flu is a virus and antibiotics are not effective against viruses
10 of 28
List four things that need to be kept constant with the body?
Temperature, blood sugar levels, water, ions
11 of 28
What is a mutation?
A change in an organisms DNA
12 of 28
Give three ways in which plant cells are different from animal cells.
Plant cells have extra features: cell wall, chloroplasts and a permanent vacuole
13 of 28
Define diffusion.
The spreading out of particles, from an area of high concentration to an, area of low concentration
14 of 28
What is the function of a red blood cell?
To carry oxygen; around the body
15 of 28
Name the green substance present in chloroplast
Chlorophyll
16 of 28
What is the nucleus?
Contains the geneteic material
17 of 28
Name one cell that does not have a nucleus.
Bacteria cell
18 of 28
Where is genetic material found in a bacterial cell?
Floating in the cytoplasm because, it has no nucleus
19 of 28
Name 5 things an animal has
Cell membrane, mitochondria, ribosomes, nuclues, cytoplasm
20 of 28
What is the function of the nucleus?
Controls activities of the cell and carries genetic information.
21 of 28
What is the function of ribosomes?
To make the proteins
22 of 28
What is the function of cytoplasm?
Where most chemical processes take place here
23 of 28
What is the function of the cell membrane?
Controls what goes in and out of the cell
24 of 28
What is the function of the mitochrondria?
Where most of the energy is released by respiration
25 of 28
Which part is missing from human red blood cells? And why?
A nucleus; to carry more oxygen
26 of 28
How are yeast cells different from bacterial cells?
They have a nucleus
27 of 28
How are bacterial cells different from animal cells?
They have a cell wall and no nucleus
28 of 28

Other cards in this set

Card 2

Front

Explain how viruses replicate within your body

Back

They replicate themseleves by invading your cells and producing many copies of themselves

Card 3

Front

What are antigens?

Back

Preview of the front of card 3

Card 4

Front

Why are cultures of microorganisms grown at temperatures no higher than 25 degrees in school labs?

Back

Preview of the front of card 4

Card 5

Front

What is epidemic?

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 Cells, tissues and organs resources »