Biology Unit 1a - GCSE - AQA

Question	Answer
what are all the food groups you should eat to have a balanced diet?	carbohydrates fats protein fibre vitamins mineral ions
what do the different food groups in a balance diet do to help you?	carbohydrates - ENERGY fats - ENERGY/ keep warm protein - growth/ cell REPAIR/ REPLACEMENT fibre - to keep the digestive system smooth vitamins/ mineral ions - keep your BODY HEALTHY
what kind of diseases are caused by a lack of certain vitamins or minerals?	deficiency diseases (e.g. lack of VITAMIN C causes SCURVY)
what does your body have to do (in terms of energy) to lose weight?	increase the amount of energy needed by the body by doing exercise and this therefore decreases the amount of energy stored as fat
what are the two main types of white blood cells? what do they do?	phagocytes - engulf the foreign cells lymphocytes - produce anti-toxins/ anti-bodies
how is water lost through the body?	the SKIN as SWEAT in our BREATH via our LUNGS via the KIDNEYS in our URINE
what are the four stages of the menstrual cycle?	stage 1 - bleeding starts as uterus wall breaks down (days 1 to 4) stage 2 - lining of uterus builds up again (days 4 to 14) stage 3 - egg develops and releases (day 14) stage 4 - uterus lining is maintained (days 14 to 28)

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	Created by RosettaStoneDecoded almost 9 years ago

	Copied by Hillary Heng about 4 years ago