AQA GCSE Biology EXAMS BUNDLE with Questions & 100% Correct Answers

What does diffusion result in? - ANSWER The net movement of particles from an area of higher concentration to an area of lower concentration Name two substances transported in and out of cells during gas exchange - ANSWER Oxygen, Carbon Dioxide What waster product diffuses into blood plasma? - A...

What is the role of the kidneys. - ANSWER Kidneys make urine by taking unwanted waste products out of your blood. They are involved in selective reabsorption. Name three things that are re-absorbed by the kidneys into the blood. - ANSWER Glucose, water and ions. Name three things that are remove...

What is a tissue? - ANSWER a group of similar cells that work together to carry out a particular function What sort of tissue can you find in mammals? - ANSWER - Epithelial tissue: covers some parts of the body, e.g. the inside and outside of the gut - Muscular tissue: contracts to move whatever...

What are the two main differences between active transport and diffusion? - ANSWER Active transport uses energy whereas diffusion doesn't. Active transport goes against the concentration gradient whereas diffusion goes along it Adaptations of Exchange Surfaces - ANSWER 1) Large surface area - lo...

Drugs change chemical processes in a person's body. Why is it difficult for a person to stop taking certain drugs? 1 mark - ANSWER addiction Plants respond to different environmental factors. Describe how different environmental factors affect: the direction of growth of roots the direction o...