Biology Paper 2

Created by: Callum Arculeo
Created on: 08-11-20 15:57

What is glucose, glycogen and glucagon?

Glucose: sugar absorbed into your blood
Glycogen:long-term glucose storage of sugar, insulin changes glucose to glycogen
glucagon: a hormone released to increase blood sugar and turns glycogen into glucose

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describe Darwin's theory of natural selection referring to the diagram below

variation (between organisms within species). In conditions these most suited/ fittest survive. Genes passed on to the offspring

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what are the steps of genetic engineering?

step 1: Identify the useful gene
step 2: cut out gene using an enzyme
step 3: put a gene into a vector that is placed into an organism.
step 4: cells multiply inside organisms to produce required protein

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what is homeostasis

its the control of internal body conditions
its controls urea, water levels, ions, temperature and glucose

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what is the menstrual cycle?

the monthly release of an egg from a woman's ovaries

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what 4 hormones is used within the menstrual cycle?

FSH, oestrogen, LH, and progesterone

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what is polydactyly?

extra fingers or toes

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what is natural selection?

natural selection works by selecting the organisms best adapted to a particular habitat.

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what is selective breeding?

selective breeding is used to get desired characteristics.

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what is FSH, oestrogen, LH and progesterone?

FSH: it is produced in the pituitary gland and causes an egg to mature in one of the ovaries and stimulates the ovaries to produce oestrogen.
oestrogen: produced in the ovaries and causes the lining of the uterus to grow.
LH: produced by the pituitary gla

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how are gametes produced?

meiosis

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what equipment is used in sampling?

quadrats

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what is used to measure light intensity?

light meter

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