revision quiz – hormones. 1- what is a hormone? questions on humans
TRANSCRIPT
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Revision quiz – Hormones
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1- What is a hormone?
Questions on humans
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2- How does growth hormone stimulate growth in humans?
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3- What happens with overproduction of growth hormone in adults?
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4- What happens with overproduction of growth hormone in children?
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5- What happens with underproduction of growth hormone
in children?
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6-Name the glands/hormones
11
Gland at base of brain
22
33
44
= Hormone
= Gland
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7-What happens when too much “2” is produced?
11
Gland at base of brain
22
33
44
= Hormone
= Gland
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8-What happens when not enough “2” is produced in adults & children?
11
Gland at base of brain
22
33
44
= Hormone
= Gland
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Questions on plants
9-What are the two groups of plant hormones?
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10-Where is IAA produced?
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11- What is the effect of IAA at the cellular level?
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12- What is the effect of high concentration of IAA on shoot and
root growth??
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13- What is the effect of IAA on buds? What is the name of this process?
What happens when the apical bud is removed?
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14- What happens when low levels of auxin are present in the leaf stalk? What is the name of this process?
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15- What is the result of production of auxin by the developing seed?
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16- Give 3 effects of Gibberelins
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17- Draw a barley seed and explain the process involving GA which results in
the breakdown of starch into maltose.
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18- What are the commercial applications of IAA?
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Questions on experiments involving auxin
19- What is the name given to an emerging shoot in grasses?
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Questions on experiments involving auxin
19- What is the name given to an emerging shoot in grasses?
Coleoptile
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20-What happens when auxin is evenly distributed?
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21- What happens when auxin is concentrated on one side only? How does this happen naturally? What is
the name of this process?
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21-Answers: Light destroys IAA so growing shoots exposed to sunlight on one side only will have an asymmetric
distribution of IAA (less IAA on side exposed to sunlight, therefore, lesser
cell elongation on that side). The coleoptile grows to one side, this is
called phototropism.
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22- What happens if the tip is removed and then replaced?
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23- What happens if the tip is removed and not replaced?
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23- What happens if the tip is removed and placed on an agar block?
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24- Once the tip has been removed, how can IAA be applied where the tip was? What would be the controls for
this experiment?
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