Biology Core Revision

Question	Answer
What are the three main food groups?	The main food groups are carbohydrates, fats and proteins.
Why do we need carbohydrates?	Needded by our bodies for a source of energy for life processes
Why do we need proteins?	Needed for our bodies for growth and repair - building cells.
Why do we need fats?	Needed by our bodies for a source of energy for life processes: fats are also needed to make cell membranes and to insulate our bodies.
What are vitamins?	Any of a group of organic compounds which are essential for normal growth and nutrition and are required in small quantities in the diet because they cannot be synthesized by the body.
Too little food may lead to...	A person being underweight.
Too much food may lead to...	A person being overweight.
If someone’s diet consists of food with a lower energy content than the amount of energy their body uses, the person will lose...	Body mass.
What is the metabolic rate?	The metabolic rate is the speed at which such chemical reactions take place in the body.
What affects the metabolic rate?	Age. Gender. Inherited factors. proportion of muscle to fat in the body. amount of exercise.
What are pathogens?	Pathogens are microorganisms that cause disease.
What are the main types of pathogen?	Bacteria and viruses are the main types of pathogen.
Once inside the body, bacteria release...	Poisons or toxins that make us feel ill.

Resource summary

	Created by Lara Jackson over 8 years ago