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Biology

GCSE · AQA

QuestionsFlashcards

Communicable Diseases
Monoclonal Antibodies
- Producing Monoclonal Antibodies
  6
- Uses of Monoclonal Antibodies
  7
Plant Disease
- Detection and Identification of Plant Diseases
  6
- Plant Defence Responses
  6

Viral Diseases Flashcards

All 6 cards in this deck

What are the symptoms of measles?: Fever and a red skin rash.
How is the measles virus spread, and how is the disease controlled?: By inhalation of droplets from sneezes and coughs; most young children are vaccinated against it.
How is HIV spread?: By sexual contact, or by exchange of body fluids such as blood when drug users share needles.
What is late stage HIV infection (AIDS)?: When the immune system is so badly damaged it can no longer deal with other infections or cancers.
True or false? HIV attacks the body's immune cells as soon as a person is infected.: False. It first causes a flu-like illness; it attacks the immune cells later unless controlled with antiretroviral drugs.
What symptom does tobacco mosaic virus (TMV) cause, and why does it reduce plant growth?: A distinctive 'mosaic' pattern of discolouration on the leaves, which reduces photosynthesis.