Quiz Term 4

Some yeast, sugar and water are mixed in a test-tube. The diagrams show the test-tube at the

start and after one hour.

Which process causes this change?

• growth

• reproduction

• respiration

• sensitivity

The shaded area of the diagram represents structures found in both plant and animal cells.

Which cell structure is from the shaded area?

• cell membrane

• cell wall

• chloroplast

• large vacuole

What is the correct order of increasing size of the following structures, from smallest to largest?

• chromosome → liver → white blood cell

• chromosome → white blood cell → liver

• liver → chromosome → white blood cell

• white blood cell → liver → chromosome

Which statement describes how young plants are supported?

• the pressure of water inside the cells pressing outwards on the cell membranes

• the pressure of water inside the cells pressing outwards on the cell walls

• the pressure of water passing from the roots through the phloem

• the pressure of water passing from the roots through the xylem

The diagram shows the order of bases along part of one strand of DNA.

A―C―T―T―A―G―A―T

What is the order of bases on the corresponding part of the other strand?

• A―C―T―T―A―G―A―T

• C―A―G―G―C―T―C―G

• T―A―G―A―T―T―C―A

• T―G―A―A―T―C―T―A

Small molecules are used as the basic units in the synthesis of large food molecules.

Which statement is correct?

• Amino acids are basic units of carbohydrates.

• Fatty acids are basic units of glycogen.

• Glycerol is a basic unit of oils.

• Simple sugar is a basic unit of protein.

In which region of the alimentary canal is maltose digested?

• colon

• rectum

• small intestine

• stomach

Which description of the cholera pathogen is correct?

• The bacterium prevents the kidney from absorbing water, so water is secreted into the small

  intestine, causing diarrhoea.

• The bacterium produces a toxin that causes the secretion of chloride ions into the small

  intestine, drawing in water by osmosis.

• The virus prevents the kidney from absorbing water, so water is secreted into the small

  intestine, causing diarrhoea.

• The virus produces a toxin that causes the secretion of chloride ions into the small intestine,

  drawing in water by osmosis.

The diagram shows a fat globule (P) in one part of the alimentary canal and the same globule (Q)

as it appears in another part of the alimentary canal.

In which parts of the alimentary canal are P and Q found?

• P= duodenum; Q= stomach

• P=ileum; Q= oesophagus

• P=oesophagus; Q= ileum

• P=rectum; Q=ileum

Which graph shows most clearly what will happen to the rate of transpiration as humidity

increases?

• A

• B

• C

• D