S3 BIO QUIZ 2

The diagram shows a large food molecule changing into smaller molecules. What is process X?

• Chemical digestion

• Physical digestion

• Absorption

• Secretion

Solid food enters the mouth at P and enters the oesophagus at Q. How does the food at Q differ from the food at P?

•   It contains less fibre.

• It contains less vitamin

• It contains less protein.

• It contains less starch

Figure shows part of the human digestive system. What will happen if X is removed?

• Lipase is not produced.

• Pancreatic juice cannot flow into duodenum.

• Protein cannot be digested.

• Lipid cannot be digested.

The diagram shows an experiment kept at room temperature. What is present in the water surrounding the membrane after 45 minutes?

• amino acids and simple sugars

• protein and amino acids

• protein and simple sugars

• starch and simple sugars

1.     Which of the following description regarding the metabolism of glucose, protein and lipids is incorrect?

• Lipids can be oxidised into carbon dioxide and water.

• Glucose can be converted into fats and amino acids.

• Amino acids from proteins connect with glucose catabolism through pyruvate.

• Can be converted into each other in the body.

Aortic stenosis is a heart valve disorder in which the aortic semilunar valve opening is narrow. Which effect could aortic stenosis have on heart structure and function?

• The cardiac muscle of the left ventricle wall is thinned by blood leaking out of the left ventricle during ventricular diastole.

• There is less cardiac muscle in the left ventricle and reduced diastolic blood pressure, caused by the smaller blood volume entering the left atrium.

• The tendons of the heart valves are weakened by blood being forced back through the left atrioventricular valve into the left atrium.

• The wall of the left ventricle thickens, leading to an enlarged heart and inability to relax and fill completely during diastole.

Blood, tissue fluid and lymph each have a different composition. Which of the following is correct the composition of lymph?

• a

• b

• c

• d

The diagram shows pressure changes during the cardiac cycle. Which arrow indicates ventricular systole?

• a

• b

• c

• d

The figure below is a schematic diagram of atrial systolic and diastolic phases. Our first heartbeat "lup" happened in?

• a

• b

• c

• d

Photomicrograph X shows a transverse section through a typical stem. Photomicrograph Y shows a longitudinal section through one type of cell shown in photomicrograph X. Which letter represents the cells from photomicrograph Y?

• a

• b

• c

• d