Responses to a Changing Environment

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What is homeostasis?
Maintaining a constant internal environment
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Which hormone is secreted into the blood if the glucose levels are too high?
Insulin
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Which type of diabetes is associated with becoming resistant to insulin?
Type II
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What is osmoregulation?
Controlling water content
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What is the BMI at which a person is considered obese?
30
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What is a tropism?
Growth of a plant in response to a stimulus
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What does auxin do?
Control the direction of growth in a plant
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What is geotropism?
A response to gravity
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Which if the following is not a use of plant hormones? - Weedkiller; Rooting Powder; controlling diabetes
Controlling diabetes
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What is a synapse?
A small gap between nerve cells
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Which type of neurone transmits a signal from a sense organ to the spinal cord and brain?
Sensory
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Which type of neurone transmits a signal from the central nervous system to an effector such as a muscle?
Motor
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How is a reflex action different from a normal response by the nervous system to a stimulus?
It doesn't need to involve the brain
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Which of these is not a reflex response? - Blinking; picking up a book; sneezing.
Picking up a book
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What is the name of the long part of the nerve cell that carries the signal?
Axon
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The ability of the eye to control the amount of light entering it is:
a reflex action
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What is name of a plant hormone?
Auxin
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Which type of plants does a selective weed killer effect?
Broad leaves
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What is the advantage of using a rooting powder?
Plants root more quickly from cuttings
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Why would a grower use a hormone rooting powder?
Produce lots of the same plant quickly
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Which hormone is used to increase fruit size?
Gibberellins
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What is not an advantage of spraying fruit to stop it falling off the tree? - The fruit will not have seeds; the fruit can be picked all at once; the fruit doesn't get damaged
The fruit will not have seeds
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Why are more exotic fruits available in shops compared to twenty years ago?
Hormones can prevent ripening till they are in the shops
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Card 2

Front

Which hormone is secreted into the blood if the glucose levels are too high?

Back

Insulin

Card 3

Front

Which type of diabetes is associated with becoming resistant to insulin?

Back

Preview of the front of card 3

Card 4

Front

What is osmoregulation?

Back

Preview of the front of card 4

Card 5

Front

What is the BMI at which a person is considered obese?

Back

Preview of the front of card 5
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