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Biology - Hormones
In the Nineteenth Century, pineapples were really rare and expensive. Today, thanks to hormones which delay ripening, they are much cheaper and more common.

Biology - Hormones

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In high school science, how organisms use nerves and hormones is one subject that is looked at. This quiz looks in particular at hormones, where they are produced, the effects that they have and their possible uses.

1 .
What are hormones?
Proteins secreted by endocrine glands
Proteins secreted by the main organs of the body
Proteins that carry information betweeen nerve cells
Proteins that carry messages from your brain to your muscles
Hormones control many aspects of your body. They regulate the amount of water in your blood and your blood sugar for example. They also have a huge role in puberty and fertility
2 .
Which of the following uses hormones?
Selective weedkiller
Rooting powder
Neither of the above
Both of the above
Hormones in selective weedkillers make the weeds grow too fast so that they collapse and die
3 .
Where is estrogen produced?
In the ears
In the adrenal glands
In the large intestine
In the ovaries
Estrogen is the hormone responsible for the regulation and development of the female reproductive system and secondary sexual characteristics. In books and articles from the USA, you will see it spelled 'Estrogen' - it is the same hormone, just spelled differently
4 .
Which hormone is used to treat diabetes?
FSH
LH
Insulin
Progesterone
Most insulin is now made from genetically engineered bacteria
5 .
The first birth-control pills contained higher amounts of estrogen than the pills taken today. Modern birth-control pills contain much less estrogen. Some only contain progesterone. Why has this changed?
Because progesterone reduces the side effects
Because progesterone is much more effective
Because progesterone is a lot cheaper
Because progesterone is easier to swallow
The original high estrogen pills caused significant side effects in women, such as changes in weight, mood and blood pressure
6 .
Why would a gardener use rooting powder?
It is cheaper than buying compost
They can produce many plants from cuttings more easily
It gives vegetables a bigger root system
It slows down the growth rate of plants
Not all cuttings will succeed. Rooting powders (and liquids) contain hormones that stimulate root growth so dipping a cutting into rooting compounds increases the chances of success
7 .
Which of the following glands is found in the brain?
Adrenal
Pancreas
Hypothalamus
Thyroid
This gland is extremely important and forms the link between the nervous system and the endocrine (hormone) system
8 .
How are hormones transported round the body?
Via the nervous system
Via the lymphatic system
Via the circulatory system
Via the respiratory system
Glands secrete hormones into the bloodstream
9 .
In the Nineteenth Century, pineapples were really rare and expensive. Why are exotic fruits much more widely available nowadays?
Because more different fruits grow
Because fruit growers use hormones to make their exotic fruits grow bigger and faster
Because feeding the fruit trees with growth hormone makes them produce a lot more fruit
Because the exotic fruits are sprayed with hormones that delay ripening
This means that they will not ripen until they are in the shops wheras in the past, the fruits ripened on the journey and most of them were too ripe to sell when they reached the shops. Exotic fruits are usually grown a long way from Britain and face a long journey to get here
10 .
Which hormone is likely to be used in fertility treatments?
FSH
LH
Insulin
Progesterone
FSH stimulates the egg cells to mature which can then be used for IVF
Author:  Kev Woodward

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