Biology - Mock Test 24

Question 231

The 3'-5' phosphodiester linkages inside a polynucleotide chain serve to join

A) One DNA strand with the other DNA strand B) One nucleoside with another nucleoside C) One nucleotide with another nucleotide D) One nitrogenous base with pentose sugar

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Question 232

The microscope usually used for seeing living cells or tissues is

A) compound microscope B) electron microscope C) phase contrast microscope D) light microscope

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Question 233

Photorespiration shows formation of

A) sugar but not ATP B) ATP but not sugar C) both ATP and sugar D) neither ATP nor sugar

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Question 234

The most effective antiemetic for controlling cisplatin induced vomiting is

A) Prochlorperazine B) Ondansetron C) Metoclopramide D) Promethazine

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Question 235

Leguminous plants are able to fix atmospheric nitrogen through the process of symbiotic nitrogen fixation. Which one of the following statement is not correct during the process of nitrogen fixation

A) Leghemoglobin scavenges oxygen and is pinkish in colour B) Nodules act as a site for nitrogen fixation C) The enzyme nitrogenase catalysis the conversion of atmospheric N₂ to NH₃ D) Nitrogenase is insensitive to oxygen

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Question 236

Which one has the largest species variety in India

A) Wheat B) Maize C) Rice D) Potato

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Question 237

If a stimulus, several times greater than the threshold stimulus is provided to a muscle fiber, it will

A) contract with a larger force B) contract with a smaller force C) contract with the same force D) undergoes tetany

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Question 238

Which of the following is correct regarding respiration in adult frog

A) In water- Skin, gills B) On land - Skin, buccal cavity C) In water- Skin, buccal cavity D) On land- Skin, lungs, gills

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Question 239

In aerobic respiration, total number of ATP molecules formed from 1 glucose molecule is

A) 28 B) 32 C) 36 D) 30

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Question 240

Which of the following is correctly matched

A) Monstera -Fibrous root B) Dahlia - Fasciculated root C) Azadirachta - Adventitious root D) Basil - Prop roots

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