on from the eye

?
label this picture of the eye
pic of eye
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what is the role and effect of adrenaline
it prepares the body for fight or flight and will effect the heart and other vital organs to speed up
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what is the effect and role of insulin
it controls the blood sugar levels and it will effect the liver
3 of 37
what is the effect and the role of testosterone
Controls puberty in males and will effect the male reproductive organs
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what is the effect and the role of progesterone
maintains the lining of the womb suppresses FSH production in the pituitary gland and will effect the uterus
5 of 37
what is the effect and the role of oestrogen
controls puberty and the menstrual cycle in females it stimulates production of LH and suppresses the production of FSH in the pituitary gland
6 of 37
what is the differences between asexual reproduction and sexual reproduction
asexual reproduction is when an organism can reproduce on their own but sexual reproduction requires a partner to reproduce
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what does fertilisation involve
it requires a GAMETE e.g. sperm and egg cells combine to form a ZYGOTE which will then divide its cells and develop into an embryo
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how is a wind pollinated flower adapted for pollination
it has seeds that will be light and be able to float in water or will be able to glide in air
9 of 37
how is a insect pollinated flower adapted for pollination
the pollen grains on the stigma will stick to the legs of an insect feeding on the nectar in the plant and when it lands on another plant fertilisation can take place and the petals are brightly coloured to attract insects
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what does the seed to once it lands on the stigma
it will grow a pollen tube down to the plants ovaries which will lead to fertilisation
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how can a plant reproduce asexually(naturally)
it could create runners with plantlets on them like strawberries however this is a problem as their offspring will have the same DNA as them so a disease could wipe out large numbers of strawberries
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how can a plant reproduce asexually(artificially)
you would cut off a branch from the parent plant and plant the stem in damp compost then plant hormones in rooting powder can encourage new roots to develop and by covering the cutting in a clear plasti bag it will keep it moist and warm
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label the diagram of male sex organs
pic of diagram with labels
14 of 37
label the diagram of female sex organs
pic of diagram with labels
15 of 37
what is the penis's function
to pass semen into the woman's vagina during sexual intercourse
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what is the function of the female sex organs
to get the semen to the egg for fertilisation
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what is the function of progesterone in the woman's menstrual cycle
it maintains the lining of the womb and suppresses the FSH production in the pituitary gland
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what is the role of oestrogen and testosterone in the development of secondary sexual characteristics
men's voices will break hair grows on face and body and for both boys and girls pubic hair grows and underarm hair grows/ for girls only hips get wider breasts develop
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what is a gene
a gene is a section of a molecule of DNA and a gene codes for a specific protein
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what is a DNA molecule
A DNA molecule contains different sequence of bases which code for a particular protein
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what are the 4 different types of bases and what are their names
AT and CG (adenine+thymine) and (cytosine guanine)
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what is a gene made of
alleles which give the inherited characteristics
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what is meant by the term homozygous
the same alleles (dominant or recessive)
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what is meant by the term heterozygous
it means there is an allele of both (1 dominant and 1 recessive)
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what is meant by the term phenotype
a phenotype is the observable characteristic of an individual
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what is meant by the term genotype
a genotype is the combination of alleles for a gene that are inherited
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how would someone get cystic fibrosis (chart needed)
chart of two heterozygous parents and showing the outcomes
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what is a family pedigree
the chance of someone inheriting a condition from the family chart analysis
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how is a sex of a person decided
if it is ** then it is female but if it is XY then it is male and the father will contribute the Y if it is a male and an X if it is a female
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what does dividing a diploid cell by mitosis produce
it produces tow cells which contain identical sets of chromosomes
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when does mitosis occur
it occurs during growth, repair, cloning and asexual reproduction
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what is the difference between meiosis and mitosis
meiosis will split a cell to create haploid gametes and mitosis will produces cells by dividing a diploid cell with the 46 chromosomes
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what does random fertilisation produce
offspring with genetic variation
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what is the number of chromosomes for a diploid cell
46
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what is the number of chromosomes for a haploid cell
23
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how can you get variation of species(factors)
environmental factors e.g. diet and genetic factors e.g. shape of nose
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Card 2

Front

what is the role and effect of adrenaline

Back

it prepares the body for fight or flight and will effect the heart and other vital organs to speed up

Card 3

Front

what is the effect and role of insulin

Back

Preview of the front of card 3

Card 4

Front

what is the effect and the role of testosterone

Back

Preview of the front of card 4

Card 5

Front

what is the effect and the role of progesterone

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