bacteria

Question 1

when and who was bacteria discovered by

Answer 1

antonie van leeuwenhoek – dutch draper
seventeenth century

Question 2

where do bacteria occur

Answer 2

almost everywhere
some survive at tops of high mountains such as alps and others in hot springs

Question 3

what are bacteria

Answer 3

saprotroph – feeding on dead animals and plants and making them decay
others are parasites and cause serious damage

Question 4

size of bacteria

Answer 4

0.1-10 micrometres
small enough for gas exchange and excretion to be carried out by diffusion

Question 5

how do bacteria reproduce

Answer 5

asexually by making a clone by splitting into two
have no gender

Question 6

what kind of shape does a bacteria have

Answer 6

variable
in some cases linked together in chains or small groups

Question 7

flagella

Answer 7

whip like tail like sperm tail which lash from side to side propelling the body along

Question 8

is it multicellular or unicellular

Answer 8

unicellular

Question 9

structure

Answer 9

body is surrounded by a thin cell membrane
beyond is a protective cell wall made of murein
some bacteria are surrounded by slimy capsule giving them extra protection and prevents them from drying out when in a dry environment

Question 10

how do bacteria survive bad conditions

Answer 10

form thick protective coat round themselves known as spores
inside spore bacterial cell becomes dormant and may remain so for a long time more than 50 years
When conditions become satisfactory again the spore bursts open and the bacterial cell is released

Question 11

why are bacteria very difficult to get rid of

Answer 11

Spores and rapid reproduction

Question 12

list diseases of bacteria

Answer 12

pneumonia
Cholera
Titanus