CIE Biology Paper-4: Specimen Questions 112 - 114 of 120

Question number: 112

One Liner Question▾

Write in Brief

Figure shows a mushroom. Label the part X and Y.

Figure shows a structure of mushroom – Label X and Y

Figure shows a structure of mushroom – Label X and Y

Figure shows a structure of mushroom (fungus), identify part X and part Y

Explanation

Part X is Cap and part Y is Gills.

Question number: 113

Essay Question▾

Describe in Detail

Write advantages and disadvantage of immobilized enzymes.

Explanation

Enzymes play very important role in metabolism in our body, but they can also use to catalyze industrial reactions outside the body, which are called as immobilized enzymes. Advantages and disadvantage of immobilized enzymes are-

Above table shows advantages and disadvantages of immobilized enzymes

Table indicates different advantages and disadvantages of immobilized enzymes.

Advantages

Disadvantages

Such enzymes catalyze specific reactions and work at much lower temperatures.

Immobilization requires extra time

The enzymes can be reused catalyzing the same reaction many times.

There may be a reduction in reaction rates if enzymes cannot mix freely with the substrate

There will be no enzyme left in the product at the end

Immobilized enzymes cannot be used if one of the substrates is insoluble.

Purification is not necessary

Question number: 114

Essay Question▾

Describe in Detail

STD is a self-invented disease Explain it.

Explanation

Sexually transmitted diseases are also called sexually transmitted infections (STI) which are self –invented disease as they occur in persons having unprotected sex with unknown or multiple partners

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