Mrs. Reema Al Bitar
Quiz by , created more than 1 year ago

-homeostasis -waste products -kidneys -when our body gets too hot/cold

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Amy Arthur
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Mrs. Reema Al Bitar
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Biology - Homeostasis and Kidneys (3a)

Biology - Homeostasis and Kidneys (3a)

Question 1 of 24

1

What is homeostasis?

Select one or more of the following:

  • The maintenance of a constant internal environment

  • The maintenance of a person's body (internal and external)

Explanation

Question 2 of 24

1

What are the things that need to be controlled in our body?

Select one or more of the following:

  • Body temperature

  • Water content

  • Ion content

  • Blood sugar levels

  • CO2

  • Urea

  • Proteins

  • Sweating

Explanation

Question 3 of 24

1

What is the temperature at which enzymes work best?

Select one or more of the following:

  • 20oC

  • 27oC

  • 30oC

  • 37oC

Explanation

Question 4 of 24

1

Why is it important to control our body's water content?

Select one or more of the following:

  • Too much water could move into or out of our cells which will damage the cells.

  • Too much water could move into the cells making us over-hydrated and the cells won't work as well.

  • Not enough water could move into the cells meaning that they will get dehydrated and won't work as well.

Explanation

Question 5 of 24

1

If the ion (or water) content of the body is wrong, it could upset the balance between ion and water. Why is this?

Select one or more of the following:

  • Too much/too little water is drawn in by osmosis > damages the cells

  • Too much/too little water is drawn in by diffusion > damages the cells

  • Too much/too little water is drawn in by active transport > damages the cells

Explanation

Question 6 of 24

1

What are the two waste products of our body that need to be controlled?

Select one or more of the following:

  • Carbon Dioxide

  • Urea

  • Carbon Monoxide

  • Urine

Explanation

Question 7 of 24

1

How is CO2 removed from the body?

Select one or more of the following:

  • By the lungs

  • By the liver

  • By the windpipe

Explanation

Question 8 of 24

1

Where does urea come from?

Select one or more of the following:

  • The reactions from the conversion of excess amino acids to fats and carbohydrates

  • The excess products from our food that we consume

Explanation

Question 9 of 24

1

Urea is made from excess amino acids and is made in the liver

Select one of the following:

  • True
  • False

Explanation

Question 10 of 24

1

Urea is not poisonous and is released into the bloodstream by the kidney

Select one of the following:

  • True
  • False

Explanation

Question 11 of 24

1

What organ filters the blood?

Select one or more of the following:

  • Liver

  • Small intestine

  • Large intestine

  • Kidney

  • Lungs

Explanation

Question 12 of 24

1

How is urea removed from the body?

Select one or more of the following:

  • Filtered from the blood by the kidneys > temporarily stored in the bladder > excreted from the body in urine

  • Filtered from the blood by the liver > temporarily stored in the small intestine then to the large intestine > excreted through faeces

Explanation

Question 13 of 24

1

How do ions enter the blood?

Select one or more of the following:

  • Taken in by what we drink and then absorbed into the blood

  • Taken in by the food we eat and then absorbed into the blood

  • Taken in by what we eat and drink and then absorbed into the blood

Explanation

Question 14 of 24

1

Excess ions are removed by the liver

Select one of the following:

  • True
  • False

Explanation

Question 15 of 24

1

How are some ions also lost?

Select one or more of the following:

  • Sweating

  • Breathing

  • Farting

Explanation

Question 16 of 24

1

The kidneys also adjust the water content of the blood to keep it controlled

Select one of the following:

  • True
  • False

Explanation

Question 17 of 24

1

Water is taken into our body as food and drink. How is it lost?

Select one or more of the following:

  • Sweating

  • Breathing out

  • Urinating

  • In faeces

  • Breathing in

Explanation

Question 18 of 24

1

We can control how much water is lost through breathing

Select one of the following:

  • True
  • False

Explanation

Question 19 of 24

1

We can control our water content through how much is consumed, sweated out and the amount that is excreted by kidneys in urine

Select one of the following:

  • True
  • False

Explanation

Question 20 of 24

1

When our body gets too hot...

Select one or more of the following:

  • Hairs lie flat

  • Hairs stand up (to trap insulating layer of air)

  • Sweat is produced, evaporating heat from the body

  • No sweat is produced

  • Blood vessels supplying the skin dilate

  • Blood vessels supplying the skin constrict

  • Our muscles constrict (shivering)

Explanation

Question 21 of 24

1

When our body gets too cold...

Select one or more of the following:

  • Hairs lie flat

  • Hairs stand up (to trap insulating layer of air)

  • Sweat is produced, evaporating heat from the body

  • No sweat is produced

  • Blood vessels supplying the skin dilate

  • Blood vessels supplying the skin constrict

  • Our muscles constrict (shivering)

Explanation

Question 22 of 24

1

On a cold day...

Select one or more of the following:

  • We sweat and have more urine (pale coloured and dilute)

  • We sweat and have less urine (dark coloured and concentrated)

  • We don't sweat and have more urine (pale coloured and dilute)

  • We don't sweat and have less urine (dark coloured and concentrated)

Explanation

Question 23 of 24

1

On a hot day...

Select one or more of the following:

  • We sweat and have more urine (pale coloured and dilute)

  • We sweat and have less urine (dark coloured and concentrated)

  • We don't sweat and have more urine (pale coloured and dilute)

  • We don't sweat and have less urine (dark coloured and concentrated)

Explanation

Question 24 of 24

1

Sports drinks are good to consume because they replace water, sugar and ions that are used up during exercise

Select one of the following:

  • True
  • False

Explanation

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