Biochemistry, Microbiology, and Molecular Biology
Organization and Function of the Cell
Solved Example: 9096-01
The cell wall of a plant is composed of: (SSC JE CE Oct 2020 Morning)
A. Cellulose
B. Carbohydrates
C. Lipids
D. Lipoprotein
Correct Answer: A
Solved Example: 9096-02
The outermost covering of the plant cell is constituted by: (MP Sub Engg Sep 2018- Shift I)
A. Cellulose
B. Lignin
C. Chitin
D. Glycocalyx
Correct Answer: A
Krebs, Glycolysis, Calvin Cycles
Solved Example: 9095-01
Which of the Intermediate of the Krebs Cycle Is Utilised in the Formation of Amino Acids?
A. Citric acid
B. Malic acid
C. Isocitric acid
D. $\alpha$-ketoglutaric acid
Correct Answer: D
Solved Example: 9095-02
In Glycolysis process: (UP TGT Home Science 2021)
A. Glucose converts into glycogen
B. Disruption of glycogen
C. Glucose converts into pyruvic acid
D. Amino acid and fat formation
Correct Answer: C
Solved Example: 9095-03
Krebs Cycle Takes Place in Aerobic Respiration Due To:
A. Electron transport chain requires aerobic conditions to operate
B. Oxygen is a reactant
C. Oxygen has a catalytic function
D. All of the above
Correct Answer: A
Solved Example: 9095-04
What is the ultimate product of Glycolysis?
A. Ethyl alcohol
B. Carbon dioxide
C. Pyruvic acid
D. Glucose
Correct Answer: C
Solved Example: 9095-05
A single-Molecule of Glucose generates _________ molecules of Acetyl CoA, which enters the Krebs cycle.
A. 4
B. 3
C. 2
D. 1
Correct Answer: C
Enzymes and Protein Chemistry
Solved Example: 9093-01
Which of following enzymes is used in the stabilisation of rice bran oil? (RRB NTPC CBT II May 2022 Shift I)
A. Hydrolase
B. Catalase
C. Lipase
D. Cellulase
Correct Answer: C
Solved Example: 9093-02
The enzyme, Lipase is produced by which organ of the body? (SSC CHSL Jul 2019 Shift III)
A. Lung
B. Pancreas
C. Salivary gland
D. Liver
Correct Answer: B
Solved Example: 9093-03
Ribosomes are formed of: (HTET TGT Science 2019)
A. DNA and RNA
B. RNA and Protein
C. DNA and Protein
D. RNA and Amino acids
Correct Answer: B
Solved Example: 9093-04
Name the enzyme in the human body that helps break down carbohydrates. (SSC CGL Jun 2019 Shift III)
A. Protease
B. Peptidase
C. Amylase
D. Lipase
Correct Answer: C
Solved Example: 9093-05
Plasma membrane is made up of which organic molecules? (SSC Scientific Asst Nov 2017 Shift II)
A. Carbohydrates
B. Vitamin
C. Lipids and protein
D. Roughage
Correct Answer: C
Solved Example: 9093-06
Amylase is also known as: (UP TGT Home Science 2010)
A. Enzyme
B. Ptyalin
C. Lysozyme
D. Neither of the above
Correct Answer: A
Solved Example: 9093-07
Complex food substances break down into simpler ones with the help of: (SSC MTS Oct 2021 Shift III)
A. Fungi
B. Hormones
C. Bacteria
D. Enzymes
Correct Answer: D
Solved Example: 9093-08
Enzymes are _________ that act as catalysts within the living cells. (SSC CPO Tier-I Mar 2019 Shift II)
A. Proteins
B. Carbohydrates
C. Vitamins
D. Calcium
Correct Answer: A
Solved Example: 9093-09
______ contains an enzyme called lingual lipase, which breaks down fats. (SSC MTS Oct 2021 Shift III)
A. The large intestine
B. The small intestine
C. The stomach
D. Saliva
Correct Answer: D
Solved Example: 9093-10
The key enzyme involved in enzymatic browning of fruits and vegetables is: (MPSC 2015 Prelims Paper I)
A. Peroxidase
B. Polyphenol oxidase
C. Catalase
D. Cholesterol oxidase
Correct Answer: B
Solved Example: 9093-11
Which of the following statements is true regarding enzymes? (UP TGT Biology 2021)
A. All require a coenzyme for their activity.
B. All are activity at neutral pH.
C. All require a molecule of water for their activity.
D. All lower the energy of activation.
Correct Answer: D
Solved Example: 9093-12
What are enzymes basically? (BSSC Inter Level Pre PYP Feb 2017)
A. Fat
B. Sugar
C. Protein
D. Vitamins
Correct Answer: C
Genetics
Solved Example: 9094-01
Which cell organelles have its own DNA? (HTET PRT 2019)
A. Lysosomes
B. Mitochondria
C. Chloroplasts
D. Both (B) and (C)
Correct Answer: C
Solved Example: 9094-02
The process of copying the genetic information on the RNA from one of the DNA is called: (RPF SI Jan 2019 Shift II)
A. Transcription
B. Transcoping
C. Transformation
D. Translation
Correct Answer: A
Solved Example: 9094-03
The human cell contains __________ chromosomes. (Soldier Tradesman Gwalior Nov 2020)
A. 46
B. 44
C. 48
D. 26
Correct Answer: A
Solved Example: 9094-04
The genetic material of bacteria is found in: (NDA Sep 2016 General Ability)
A. Nucleus
B. Cytoplasm
C. Cell membrane
D. Ribosome
Correct Answer: B
Solved Example: 9094-05
Turner's syndrome is characterized by chromosomes: (UP TGT Biology 2013)
A. 46
B. 45
C. 47
D. 48
Correct Answer: B
Solved Example: 9094-06
The full form of DNA is: (SSC GD Feb 2019 Shift I)
A. DeoxyribeNeutral Acid
B. DeltaNucleic Acid
C. DeoxyriboNucleic acid
D. DyoxyeNucleic Acid
Correct Answer: C
Protein Synthesis
Solved Example: 9097-01
Which one of the following statements regarding histone proteins is correct? (CDS GK Paper VII Feb 2019)
A. Histones are proteins that are present in mitochondrial membrane.
B. Histones are proteins that are present in nucleus in association with DNA.
C. Histones are proteins associated with lipids in the cytosol.
D. Histones are proteins associated with carbohydrates in the cytosol.
Correct Answer: B
Solved Example: 9097-02
What will be the correct gene expression pathway? (HTET TGT Science 2020)
A. Gene → translation → m-RNA → transcription → protein
B. Gene → transcription → m-RNA → translation → protein
C. Gene ;→ m-RNA → transcription → translation → protein
D. Gene → transcription → translation → m-RNA → protein
Correct Answer: B
Solved Example: 9097-03
In protein synthesis, which RNA plays an important role? (MPSC 2014 Prelims Paper I)
A. m RNA
B. t RNA
C. i RNA
D. r RNA
Correct Answer: A
Solved Example: 9097-04
Rho ($\rho$) factors involved in transcription of DNA to RNA molecule is a: (UP TGT Biology 2016)
A. Nucleoside
B. Metallic ion
C. Hormone
D. Protein
Correct Answer: D
Solved Example: 9097-05
A basic event in protein synthesis is the creation of a/an: (RRC Group D Paper III Sep 2018 Shift I)
A. DNA copy
B. RNA copy
C. mRNA copy
D. DNA and RNA copy
Correct Answer: C
Solved Example: 9097-06
Proteins are made up of: (HSSC Aug 2021 Shift II)
A. Sugars
B. Amino acids
C. Fatty acids
D. Nucleic acids
Correct Answer: B
Solved Example: 9097-07
Ribosomes are sites for: (UP TGT Biology 2009)
A. Protein synthesis
B. Photosynthesis
C. Fat synthesis
D. Respiration
Correct Answer: A