B1a Human Biology Revision Answer Key

AQA GCSE Revision Topics

B1a Human Biology MULTIPLE CHOICE QUESTION PAPER

B1a. 1. Co-ordination and control p24 Responding to change

Nervous system - neurones
Hormones – glands
Notes
understand p26 Reflex action
Reflex arc pathway synapse p28
Menstrual cycle
FSH, oestrogen, LH, ovulation

p30
Artificial control of fertility
Contraceptive pill
IVF treatment

p32
Controlling conditions
Water & ions – kidneys
Temperature
Blood glucose – insulin

p34
Controlling fertility

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B1a. 2. Healthy eating p38 Diet and exercise

Components of balance diet
Energy requirements
Metabolic rate
Notes
understand p40 Weight problems
BMI
Obesity – healthy
2. How plants produce food - photosynthesis p150 Photosynthesis

Equation
Structure & function leaf
Iodine test for starch
Notes
understand p152 Limiting factors
Light, temperature, carbon dioxide

p154
How plants use glucose
Respiration
Transport -xylem & phloem
Storage

p156
Why do plans need minerals?
Role magnesium & nitrates

p158
Plant problems?
Small holder, arable farmer
Hydroponics

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B2. 3. Energy Flow p162 Pyramid of biomass

Draw pyramids of biomass
Notes
understand p164 Energy losses
Respiration, waste, movement, controlling body temperature
Sankey diagrams

p166
Energy in food production

p168
Decay
Decomposers
Detritus feeders
Conditions for decay
Decay in recycling

p170
The carbon cycle
Energy transfers

p172
Farming- intensive or free range?

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B2. 4. Enzymes p176 Enzyme structure

Lock and key hypothesis
Notes
understand p178 Factors affecting enzyme action
Effect of temperature & pH
Role of enzymes

p180
Aerobic respiration
Equation
Mitochondria

p182
Enzymes in digestion
Carbohydrase (amylase), protease, lipase
Structure of digestive