GCSE AQA Biology B1- Checklist [HIGHER TIER]

Hi, this is the B1 Checklist my teacher gave to me when I did Biology. It helped me to know what I did and didn't know. Let me know if you want anymore uploads. Hope this helps :)

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Preview of GCSE AQA Biology B1- Checklist [HIGHER TIER]

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B1 Biology Checklist Specification 2011
Specification Point
B1.1.1 Diet and exercise
What makes up a healthy diet
Describe what each of the components are needed for in the body e.g. carbs for energy
Malnourishment is too much (obesity) or too little (e.g. starvation)
Deficiency diseases e.g. anorexia and diabetes type 2
The energy balance in the body and how diet and exercise can affect it
Metabolic rate varies according to exercise and genetic factors
Inherited factors also affect our health e.g. Cholesterol
People who exercise regularly are usually healthier than people who take little exercise.
B1.1.2 How our bodies defend themselves against infectious diseases
Microbes that cause infectious disease are called pathogens.
Bacteria and viruses may reproduce rapidly inside the body and may produce toxins. Viruses
damage the cells in which they reproduce.
The body has different ways of protecting itself against pathogens e.g. the skin
White blood cells help to defend against pathogens by: ingesting pathogens, producing antibodies
and producing antitoxins
The immune system of the body produces specific antibodies to kill a particular pathogen. This
leads to immunity from that pathogen.
Semmelweiss and his links with hand washing and reducing disease
It is difficult to develop drugs that kill viruses without also damaging the body's tissues.
Pathogens mutate, producing resistant strains.
Painkillers don't get rid of pathogens
Roles of antibiotics in treatment, and not successful against viruses
Strains of bacteria, e.g. MRSA, have developed resistance as a result of natural selection due to
overuse
Mutations of pathogens produce new strains.
Need to develop new treatments
How a vaccine works e.g. MMR
How to culture microbes properly in petri dishes to avoid contamination + keep safe (e.g. incubation)
In school and college laboratories, cultures should be incubated, at a maximum temperature of 25
°C
B1.2.1 The nervous system
Nervous system allows body response to environment
Receptors detect stimuli (changes in the environment) e.g. eyes
Info from receptors passes along cells (neurones) in nerves to the brain.
The brain coordinates the response.
Reflex actions
Role of receptors, sensory neurones, motor neurones, relay neurones, synapses and effectors in
simple reflex actions.
B1.2.2 Control in the human body
Internal conditions that are controlled include: water content, ion content, temp and blood sugar
Hormones released from glands to help control body e.g. sex hormones
Roles of FSH, LH and oestrogen in menstrual cycle
Roles of oestrogen and progesterone in the contraceptive pill and how oestrogen alone leads to
side effects so often combined or progesterone only
Role of LH and FSH in IVF
B1.2.3 Control in plants
Plants are sensitive to environment e.g. light and moisture
Plants produce hormones to coordinate and control growth. Auxin controls phototropism and
gravitropism (geotropism).
Unequal distribution of auxin leads to uneven growth on one side
SRR 2011

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B1 Biology Checklist Specification 2011
Plant growth hormones are used in agriculture and horticulture as weed killers and as rooting
hormones.
B1.3.…read more

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B1 Biology Checklist Specification 2011
Variation can be genetic (combination of genes inherited) or environmental or both
B1.7.2 Reproduction
2 forms of reproduction: sexual and asexual
New plants can be produced quickly and cheaply by taking cuttings from older plants.…read more

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