8B Quick Quiz

  

8Ba

1       What is digested food used for in our bodies?

A       To provide energy only.

B       To provide energy, for growth and to provide chemicals to make new substances.

C       To provide oxygen.

D       To provide carbon dioxide.

 

2       What is the name of the process that releases energy in our bodies?

A       photosynthesis

B       excretion

C       reproduction

D       respiration

 

3       What substance is used as the main energy resource in our bodies?

A       protein                            B       glucose

C       oxygen                           D      water

 

4       In what ways is burning similar to respiration?

A       Both reactions produce oxygen and water.

B       Both reactions use oxygen and water.

C       Both reactions occur in one uncontrolled step.

D       Both reactions release energy and produce carbon dioxide.

 

8Bb

1       How is oxygen transported around the body?

A       carried on red blood cells

B       as a gas

C       carried on white blood cells

D       attached to glucose

 

2       The heart and blood vessels make up the:

A       breathing system.            B      digestive system.

C       nervous system.              D     circulatory system.

 

3       The heart has two halves. This is because:

A       one half pumps blood to the lungs, and the other half pumps blood around the rest of the body.

B       one half is not used except in an emergency.

C       one half pumps blood around the body one way, and the other half pumps blood around the body in the other direction.

D       one half pumps blood, and the other half pumps water carrying dissolved food.

 

4       The smallest blood vessels are called:

A       veins.                              B       arteries.

C       capillaries.                      D      tributaries.

8Bc

1       When you exercise:

A       your pulse rate stays the same, but your breathing rate goes up.

B       your pulse rate goes up, but your breathing rate goes down.

C       your pulse rate goes down, but your breathing rate goes up.

D       your pulse rate goes up, and your breathing rate goes up.

 

2       How is carbon dioxide transported around the body?

A       carried on red blood cells

B       as a gas

C       carried on white blood cells

D       dissolved in the plasma

 

3       The word equation for aerobic respiration is:

A       glucose + carbon dioxide ® water + oxygen (+ energy)

B       glucose + oxygen ® water + carbon dioxide (+ energy)

C       oxygen + carbon dioxide ® water + glucose (+ energy)

D       oxygen + water ® glucose +  dioxide (+ energy)

 

4       Cells that need oxygen take it from a liquid that leaks out of capillaries. This liquid is called:

A       oxygenated blood.

B       lymph.

C       tissue fluid.

D       formalin.

 

8Bd

1       Air entering the lungs would pass through the following structures in the order:

A       trachea ® bronchus ® air sac ® alveoli

B       trachea ® bronchus ® alveoli ® air sac

C       alveoli ® trachea ® bronchus ® air sac

D       bronchus ® trachea ® air sac ® alveoli

 

2       What part of the lung is labelled Y, in the diagram?

 

A       diaphragm                      B       windpipe

C       air sac                            D      bronchus

3       The movement of particles from an area where they are in a high concentration to an area where they are in a lower concentration is called:

A       dissolving.                       B       transport.

C       diffusion.                         D      excretion.

 

4       Mucus lines the air passages and traps dirt and tiny organisms called microbes. It is moved up and out of the lungs by tiny hairs called:

A       villi.                                B       cilia.

C       bristles.                           D      filaments.

 

8Be

1       The air we breathe in contains:

A       more oxygen and more water vapour than the air we breathe out.

B       more oxygen and less carbon dioxide than the air we breathe out.

C       more carbon dioxide and less oxygen than the air we breathe out.

D       more carbon dioxide and less water vapour than the air we breathe out.

 

2       Water vapour can be detected using:

A       limewater.

B       hydrogencarbonate indicator.

C       cobalt chloride paper.

D       universal indicator paper.

 

3       Limewater is used to test for:

A       oxygen.

B       nitrogen.

C       hydrogen.

D       carbon dioxide.

 

4       Hydrogencarbonate indicator is yellow in acidic solutions, purple in alkaline solutions and pink in neutral solutions.

         If exhaled air is bubbled through hydrogencarbonate indicator solution, it would turn the indicator:

A       purple.

B       yellow.

C       pink.

D       cloudy.