Flashcards
Biology 1 Keeping Healthy Core GCSE
Flashcards do conjunto (35)
- 1What is meant by a 'Balanced Diet'A healthy diet that includes all of the things needed to keep the body healthy
- 2Why do people need different amounts of energy?Because the metabolic rate varies from person to person.
- 3What happens when the energy intake is less than the energy used?The person will lose mass
- 4What do you need more of if you are more physically active ?Energy (food)
- 5What is the metabolic rate?The chemical reaction in cells
- 6What happens if you eat more food (take in more energy) then needed?You become overweight/ your mass will increase
- 7What can obesity lead to?Type 2 diabetes
- 8What does exercise do?Help the body stay healthy
- 9What does inherited factors effect?Metabolic rate and cholesterol levels
- 10What are Pathogens?Micro-organisms that cause infectious disease
- 11What do pathogens tend to be?Bacteria or viruses
- 12What reproduces rapidly and may produce toxins?Pathogens
- 13What does viruses do?reproduce inside cells and damage them
- 14What does washing your hands do?Remove pathogens
- 15What doctor discovered the removal of pathogens by washing your hands?Dr.Semmelweiss
- 16How does bacteria or viruses make you feel ill?They produce toxins
- 17How does the body prevent pathogens from entering?The skin, mucus and stomach acid
- 18How does the body get rid of pathogens once they have got into the body?White blood cells
- 19Name the 3 things white blood cells doIngest Pathogens → produce antibodies→ produce antitoxins to counteract toxins
- 20What is the job of some 'medicines'To relieve the symptoms of the disease but not kill the pathogens that cause it
- 21What does antibiotics do?Cure bacterial diseases by killing the bacteria inside your body
- 22What can antibiotics NOT destroy?Viruses
- 23Why are viruses difficult to destroy?Because they reproduce inside the body cells
- 24How is bacteria grown?On agar Jelly
- 25Why must all the materials and equipment be sterilised?To ensure that unwanted microorganisms do not infect the culture
- 26What can uncontaminated cultures be used for?to investigate the effect of antibiotics and disinfectants on the bacteria
- 27The air contains microorganisms, what must we do to keep the bacterial culture pure?The microorganims from the air must be killed or prevented from entering the culture
- 28What happens if a pathogen changes by mutation?The new strain may spread rapidly
- 29What can new strains cause?epidemics and pandemics
- 30How have some bacteria developed resistance to antibiotics?Natural selection
- 31What is given to immune people from diseases?A wide range of vaccines
- 32What does a vaccine contain?Dead or inactive pathogens
- 33What does vaccines encourage?The white blood cells to produce antibodies to destroy the pathogens?
- 34What does vaccines protect?Individuals and society from the effects of disease
- 35Why has the treatment of disease changed?Our understanding of antibiotics and and immunity has increased
Informações
- Descrição
- Biology 1 Keeping Healthy Core GCSE
- Criado por
- Chloe Roberts
- Visualizações
- 390
- Tags
- Avaliação