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Biology

GCSE · Edexcel

QuestionsFlashcards

Photosynthesis
Plant Structure
Transport in Plants
Plant Hormones
- Plant Hormones & Growth
  7
- Using Plant Hormones Commercially
  7

Transport in Animals
- The Need for Transport
  7
- Factors Affecting the Rate of Diffusion
  7
Respiration
- Respiration
  6
- Practical: Investigating Respiration
  5
Gas Exchange
Circulatory System
- The Blood & Blood Vessels
  6
- The Circulatory System
  8

Diabetes Flashcards

All 7 cards in this deck

What is the cause of type 1 diabetes?: The pancreas stops producing enough insulin, so blood glucose concentration can rise dangerously high.
How is type 1 diabetes controlled?: By insulin injections, together with a controlled carbohydrate diet and regular exercise.
What is the cause of type 2 diabetes?: Body cells (in the liver and muscles) become resistant to insulin, so they no longer take up glucose properly.
How is type 2 diabetes controlled?: By a controlled carbohydrate diet, losing weight and regular exercise; drugs may also be used.
True or false? Type 2 diabetes is caused by the pancreas failing to make insulin.: False. In type 2 diabetes insulin is still made, but the body's cells are resistant to it.
Which two calculations are used to link body mass to the risk of type 2 diabetes?: $BMI = \frac{\text{mass (kg)}}{(\text{height (m)})^2}$ and waist:hip ratio = waist circumference $\div$ hip circumference.
True or false? A positive correlation between BMI and rates of type 2 diabetes proves that obesity causes type 2 diabetes.: False. A correlation shows the risk increases with BMI, but it does not on its own prove cause.