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Exam (elaborations)

Test (elaborations) Science

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A step to step revision pack full of detail and knowledge. It includes topics such as, Diseases, The living world, Sport and Nutrition, Adaptation. The document is 2511 words. This is all you need to ace any test.

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  • May 19, 2024
  • 1
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

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Virus

 Helpful: Oncolytic viruses – kills cancer cells to help the immune system
 Deadly: Rabies virus – affects the nervous system, almost 100% fatal

A virus is an infectious microbe consisting of a nucleic acid, surrounded by a protein coat.

Fungi

 Helpful: Yeast – is used to make bread, beer, wine and a lot of other baked goods, it helps it rise.
 Deadly: Destroying Angels – incredibly toxic fungi most deadly mushroom found throughout
Europe.

Fungi is responsible for breaking down organic matter and releasing carbon, oxygen and phosphorus into
the soil and the atmosphere.

Bacteria

 Helpful: Lactobacillus acidophilus - a helpful that helps digest your food, provides nutrients.
 Deadly: S aureus – leading cause of the skin and soft tissue infection.

Bacteria are tiny, single celled living organisms. There are millions of different types of bacteria, many of
which can be beneficial.

Protozoa

 Helpful: Protozoans – play important roles in the fertility of soils. By grazing on soil bacteria.
 Deadly: Malaria – is the most significant of the protozoa parasites that infect a man.

Protozoa are microscopic one celled organism that can be free living or parasitic in nature.

Variables

Independent – The variable you change

Dependent – The variable you measure

Control – The variable you keep the same

Pathogen - A microbe that can cause a disease

Bacteria has NO nucleus!

Bacteria doubles every 4 to 20 minutes (A
sexual reproduction)

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