IGCSE Biology Paper-4: Specimen Questions with Answers 175 - 176 of 279

Question 175

Write in Short

Short Answer▾

Blood is transported in arteries and veins.

Complete the drawings of the cross-sections of an artery and a vein to show the differences between these two types of blood vessel. Label the lumen in each drawing.

Artery and Vein

Explanation

Artery and Vein

Question 176

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Short Answer▾

Table shows some of the enzymes, their substrates, products and where they are produced in the digestive system.

Complete Table.

Some of the Enzymes, Their Substrates, Products and Where They Are Produced in the Digestive System
enzymesubstrateproduct (s)location of enzyme production
starchsalivary glands
maltasemaltose
amino acidsstomach wall
amino acidspancreas and small intestine wall
lipasefats

Explanation

Some of the Enzymes, Their Substrates, Products and Where They Are Produced in the Digestive System
enzymesubstrateProduct (s)location of enzyme production
Salivary

amylase

starchmaltosesalivary glands
maltasemaltoseGlucoseWall of small intestine
pepsinproteinamino acidsstomach wall
trypsinproteinamino acidspancreas and small intestine wall
lipasefatsFatty acid and glycerolpancreas and small intestine wall