Cell organisation

• What are pathogens?


  Pathogens are disease-causing viruses, bacteria, fungi, or protists.
• How does the human body defend itself from pathogens?

  Humans have an immune system that can defend them from pathogens.
• What is the role of the nucleus in a cell?

  • The nucleus controls what happens inside the cell.
  • It contains chromosomes, which are structures found in most cells.
• What type of organisms do fungi belong to?

  Fungi are a large group of eukaryotic organisms.
• What is yeast and why is it important?

  Yeast is a unicellular fungus used in the brewing and baking industries.
• How do multicellular fungi differ from unicellular fungi?

  Multicellular fungi, like mushrooms, are made of many cells, while unicellular fungi, like yeast, consist of a single cell.
• What is athlete's foot and what causes it?

  Athlete's foot is a rash caused by a fungus that is usually found between people's toes.
• How is athlete's foot transmitted?

  Athlete's foot is transmitted by touching infected skin or surfaces that have been previously contaminated.
• What is the treatment for athlete's foot?

  Athlete's foot is treated by antifungal medication.
• What is rose black spot and what causes it?

  Rose black spot is caused by a fungus that infects roses.
• What are the symptoms of rose black spot?

  Rose black spot causes black or purple spots on leaves, which may turn yellow and drop off.
• How does rose black spot affect a plant's growth?

  It reduces the plant's ability to photosynthesize and reduces growth.
• How is rose black spot transmitted?

  Rose black spot can be transmitted in air or water, as well as through direct contact by gardeners.
• What are the treatments for rose black spot?

  Rose black spot is treatable using fungicides and by removing and destroying infected leaves.