Free Biological Molecules MCQs with Answers
1,790 Biological Molecules MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
The chapter covers water's polarity and biological roles, carbohydrates, lipids, proteins and nucleic acids, including their monomers, bonds, structures and functions. It also distinguishes RNA from DNA and explains conjugated molecules such as glycoproteins, glycolipids and nucleoproteins, which combine organic molecules with a non-protein component.
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1,790 questions · page 69 of 90
- A. Hydrolysis of ethyl chloride
- B. Heating methyl cyanide
- C. Heating ammonium acetate
- D. Heating ethyl acetate
Explanation: Acetamide is produced by heating ammonium acetate.
Correct answer: Heating ammonium acetate- A. 60000
- B. Almost 10000
- C. 5000
- D. 20000
Explanation: At least 10,000 different proteins make you what you are and keep you that way.
Correct answer: Almost 10000- A. Solubilized
- B. Decomposed
- C. Over cooked
- D. Coagulated
Explanation: Explanation for this question will be added soon!
Correct answer: Coagulated- A. Butter
- B. Milk
- C. Cheese
- D. Vinegar
Explanation: Acetic acid was first obtained from vinegar.
Correct answer: Vinegar- A. Presence of -OH group
- B. Presence of C-O single bond
- C. Presence of C-O double bond
- D. None of these
Explanation: Nucleophilic reaction of carboxylic acids are due to -OH group.
Correct answer: Presence of -OH group1366. Enzymes are:
- A. Non-specific in action
- B. Very reactive
- C. Highly specific
- D. Volatile
Explanation: Explanation for this question will be added soon!
Correct answer: Highly specific- A. Carbonate
- B. Bicarbonate
- C. Bisulphites
- D. Both A and B
Explanation: Carboxylic acid decomposes carbonates and bicarbonates evolving carbon dioxide gas with effervsescence.
Correct answer: Both A and B- A. Propanol
- B. Ethanal
- C. Ethanol
- D. Ethane
Explanation: Explanation for this question will be added soon!
Correct answer: Ethanol- A. Maleic acid
- B. Citric acid
- C. Butyric acid
- D. None of these
Explanation: Explanation for this question will be added soon!
Correct answer: Citric acid- A. Mn2+
- B. Mg2+
- C. Zn2+
- D. None of these
Explanation: Explanation for this question will be added soon!
Correct answer: Zn2+- A. Reversible
- B. Irreversible
- C. Equilibrium
- D. all of these
Explanation: Explanation for this question will be added soon!
Correct answer: Irreversible1372. When two carboxylic acids are strongly heated in the presence of P2O5, which product is formed?
- A. Acid halides
- B. Dimer
- C. Acid anhydrid
- D. None of these
Explanation: Explanation for this question will be added soon!
Correct answer: Acid anhydrid- A. CH3COOO-H3
- B. CH3CH2OH
- C. CH3CH2COOH
- D. CH3COOOCH3
Explanation: Explanation for this question has been added!
Correct answer: CH3CH2COOH- A. Simple
- B. Conjugated'/compound
- C. Derived
- D. All of these
Explanation: Explanation for this question will be added soon!
Correct answer: Conjugated'/compound- A. Ethanoic acid
- B. Butanoic acid
- C. Adipic acid
- D. Phthalic acid
Explanation: Explanation for this question has been added!
Correct answer: Phthalic acid- A. Mn2+
- B. Mg2+
- C. Zn2+
- D. None of these
Explanation: Mn2+, Co2+, Ni2+ with an activating effect, Zn2+ with an inhibitory effect.
Correct answer: Zn2+- A. In synthesizing pickles
- B. In paints
- C. In pesticides
- D. all of these
Explanation: Explanation for this question will be added soon!
Correct answer: In synthesizing pickles- A. Butyric acid
- B. Phthalic acid
- C. Lactic acid
- D. Acetic acid
Explanation: Explanation for this question will be added soon!
Correct answer: Acetic acid- A. Concentration of substrate
- B. Optimum temperature
- C. Beta radiation
- D. Optimum pH
Explanation: Explanation for this question will be added soon!
Correct answer: Beta radiation- A. Four
- B. Six
- C. Five
- D. Two
Explanation: Explanation for this question will be added soon!
Correct answer: Six