B3 Edexcel Spec

Topics: DNA, Behavior, Progesterone Pages: 9 (1995 words) Published: January 25, 2013
Biology 3 Spec:

|BIOLOGY UNIT B3 Topic 1 Control systems | |1.1 Be able to demonstrate an understanding that cell metabolism leads to the build-up of waste products in the | |blood, including carbon dioxide and urea | |1.2 Know that urea is produced from the breakdown of excess amino acids in the liver and is removed by the | |kidneys | |1.3 Be able to describe the structure of the urinary system, including: | |a) renal artery and vein | |b) kidneys | |c) ureters | |d) bladder | |e) urethra | |1.4 Be able to describe possible treatments for kidney failure, including kidney dialysis and organ donation | |1.5 Be able to describe the structure of a nephron, including: | |a) glomerulus and Bowman’s capsule | |b) convoluted tubules | |c) loop of Henlé | |d) collecting duct | |1.6 Be able to explain how the structure of the nephron is related to its function in filtering the blood and | |forming urine (osmoregulation), including: | |a) filtration in the glomerulus and Bowman’s capsule | |b) selective reabsorption of glucose | |c) reabsorption of water (osmoregulation) | |d) removal of excess water in urine | |1.7 HT only: Be able to demonstrate an understanding of the role of ADH (produced by the pituitary gland) in | |regulating the water content of the blood | |1.8 HT only: Be able to demonstrate an understanding of how ADH production is controlled by a negative feedback | |mechanism | |1.9 Know that the menstrual cycle is controlled by the hormones oestrogen and progesterone | |1.10 Be able to describe the stages of the menstrual cycle including menstruation, uterus lining thickening and | |ovulation | |1.11 Be able to explain why the uterus lining is maintained if fertilisation occurs | |1.12 HT only: Be able to demonstrate an understanding of how oestrogen, progesterone, FSH and LH control the | |menstrual cycle, including: | |a) FSH stimulates maturation of follicles, which stimulates oestrogen production | |b) oestrogen is responsible for repair of the uterus wall...
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