10
Q:

Biological catalysts are protein molecules which

1. speed up a chemical reaction

2. remain unchanged after reaction

3. function optimally at 37 deg C.

4. do not have an enzymatic activity

Select the correct answer using the code given below.

A) 1 only B) 1, 2 and 3
C) 2 and 3 only D) 1, 3 and 4

Answer:   B) 1, 2 and 3



Explanation:

Enzymes are biological catalysts. Enzymes are the catalysts involved in biological chemical reactions.

A fundamental task of proteins is to act as enzymes—catalysts that increase the rate of virtually all the chemical reactions within cells.

A catalyst remains chemically unchanged itself at the end of a reaction.

Each enzyme has a temperature that it works optimally in, which in humans is around 98.6 degrees Fahrenheit, 37 degrees Celsius –the normal body temperature for humans.

Subject: Biology
Exam Prep: Bank Exams
Q:

Yeast and mushrooms are the examples of organisms of which kingdom?

 

A) Fungi B) Monera
C) Plantae D) Protista
 
Answer & Explanation Answer: A) Fungi

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6 19309
Q:

Which of the following is the largest group of animals?

A) Nematoda B) Porifera
C) Arthropoda D) Mollusca
 
Answer & Explanation Answer: C) Arthropoda

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4 915
Q:

Plants having body that is differentiated into roots, stems and leaves and have specialized tissue for the conduction of water and other substances, fall in which group?

 

A) Bryophyta B) Thallophyta
C) Pteridophyta D) All option are correct
 
Answer & Explanation Answer: C) Pteridophyta

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7 938
Q:

Which are the special proteins in muscles that contract and relax to cause movement?

 

A) Contractile protein B) Receptor protein
C) Structural protein D) Enzymatic protein
 
Answer & Explanation Answer: A) Contractile protein

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3 41502
Q:

The richest source of Vitamin D from food is

A) Cotton seed oil B) Olive oil
C) Cod liver oil D) Sunflower oil
 
Answer & Explanation Answer: C) Cod liver oil

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5 845
Q:

Oncology is associated with treatment of

A) Osteoporosis B) Diabetes
C) Cancer D) Renal failure
 
Answer & Explanation Answer: C) Cancer

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3 865
Q:

The group of crop plant that are vegetatively propagated is:

 

A) potato,papaya and banana B) Sugarcane,potato and banana
C) groundnut,drumstick and cashew nut D) Onion,coriander and lime
 
Answer & Explanation Answer: B) Sugarcane,potato and banana

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8 50765
Q:

The O-T-C medicine Crocin is an

A) Analgesic B) Antipyretic
C) Analgesic and antipyretic D) Antiseptic
 
Answer & Explanation Answer: C) Analgesic and antipyretic

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11 1043