Biological Molecules | Past NTS Sindh Mdcat from Sindh Textbook Board | mosaicbro.com

Biological Molecules | Past NTS Sindh Mdcat from Sindh Textbook Board

7 of 29 questions (Page 3 of 5)

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15 The bond present between carbohydrate units (dmc 2002)
Correct Answer: C
Explanation: Carbohydrate units are joined together by glycosidic bonds.
16 An organic compound in which hydrogen and oxygen are present in the same ratio as in water is (sbbmc 2011)
Correct Answer: B
Explanation: Carbohydrates typically have hydrogen and oxygen in a 2:1 ratio, similar to water.
17 Which of the following process is reverse of condensation? (sbbmc 2016)
Correct Answer: A
Explanation: Hydrolysis breaks bonds by adding water, which is the reverse of condensation (which removes water).
18 Which one of the following combinations of statements is true of saccharides in living Organisms? (2015)
Correct Answer: D
Explanation: Hydrolysis of saccharides breaks them into smaller sugars while using water molecules.
19 Steroids consist of ______ 6-membered carbon rings and one 5-membered carbon ring. (dmc 2012)
Correct Answer: B
Explanation: Steroids have a characteristic structure of three 6-membered rings and one 5-membered ring.
20 Which level of protein structure maintains the helix shape of enzymes? (nts 2014)
Correct Answer: B
Explanation: Secondary structure includes alpha helices and beta sheets that give enzymes their initial folded shapes.
21 ______ is the storage form of carbohydrates in animals and human which is equivalent to the ______ in plants. (lumhs 2019)
Correct Answer: C
Explanation: Glycogen is how animals store carbohydrates, while plants use starch for the same purpose.
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