✅ 2023 – Objective Questions (Q1)

[Attempt any 7 out of 10 – 2×7 = 14 marks]

(a) Where does the light reaction take place?

(i) Grana (ii) Stroma (iii) Cytoplasm (iv) Endoplasmic reticulum

(b) COVID-19 is a
(i) Bacteria (ii) Protozoa (iii) Virus (iv) Fungus

(c) In the exothermic reaction, the enthalpy of reaction is always

(i) Zero (ii) Positive (iii) Negative (iv) None of these

(d) Photosynthesis is a
(i) Exothermic reaction (ii) Endothermic reaction
(iii) Light reaction (iv) Dark reaction

(e) Genetic engineering is related to

(i) Plasmid (ii) Mitochondria (iii) Ribosome (iv) Golgi complex

(f) The simplest amino acid is

(i) Glycine (ii) Alanine (iii) Asparagine (iv) Tyrosine

(g) Which of the following characteristics of pea plants was not used by Mendel?
(i) Seed colour (ii) Seed shape (iii) Pod length (iv) Flower position

(h) The green colour of plant is due to

(i) Heparin (ii) Haeme (iii) Chlorophyll (iv) Hepatin

(i) Which of the following purine bases is present in RNA?

(i) Uracil (ii) Thymine (iii) Cytosine (iv) Guanine

(j) Chlorophyll is soluble in water

(i) True (ii) False

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✅ 2022 – Objective Questions (Q1)

[Attempt any 7 out of 10 – 2×7 = 14 marks]

(a) The digestive system of the cell is known as

(i) Ribosome (ii) Golgi body (iii) Lysosome (iv) Chloroplast

(b) The movement of particles in liquids and gases is observed as

(i) Brownian motion (ii) Bruneian motion (iii) Randomium motion (iv) Blackian
motion
(c) The exchange of segments of non-sister chromatids between chromosomes of a
homologous pair is termed as
(i) Transformation (ii) Translocation (iii) Crossing over (iv) Chromosomal
aberration

(d) Enzyme inhibition caused by a substance resembling the substrate molecule is

(i) Competitive inhibition (ii) Non-competitive inhibition
(iii) Feedback inhibition (iv) Allosteric inhibition

(e) Glutamine and methionine are the building blocks of proteins known as
(i) Glutamine (ii) Asparagine (iii) Methionine (iv) Serine

(f) Chlorophyll in chloroplast is located in

(i) Grana (ii) Pyrenoid (iii) Stroma (iv) Both (i) and (iii)

(g) The one aspect which is not a salient feature of genetic code is its being
(i) Specific (ii) Ambiguous (iii) Degenerate (iv) Universal

(h) Bacteriological media that are composed of ingredients whose exact chemical
compositions are known are called:
(i) Designated (ii) Exact (iii) Defined (iv) Selective

(i) New cells generate from

(i) Bacterial fermentation (ii) Regeneration of old cells
(iii) Pre-existing cells (iv) Abiotic materials

(j) DNA in virus is always:

(i) Linear (ii) Circular (iii) Both (i) and (ii) (iv) None of these

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✅ 2021 – Objective Questions (Q1)

[Attempt any 7 out of 10 – 2×7 = 14 marks]

(a) Genetically engineered microorganism used for cleaning oil spills:

(i) Clostridium (ii) Rhizobium (iii) Pseudomonas putida (iv) Nostoc

(b) Hereditary disease among the following:

(i) Asthma (ii) Down’s syndrome (iii) Typhoid (iv) Tuberculosis

(c) Microorganism helpful in phosphate solubilization:

(i) Aspergillus (ii) Azotobacter (iii) Lactobacillus (iv) Rhizopus

(d) H⁺ concentration in 0.01 M NaOH is:

(i) 10⁻¹¹ (ii) 10⁻² (iii) 10⁻¹ (iv) 10⁻⁷
(e) Dihybrid ratio observed by Mendel:
(i) 1:2:1 (ii) 3:1 (iii) 9:3:3:1 (iv) 1:1:1:1

(f) Most cultivated wheat in India:

(i) Triticum aestivum (ii) Triticum durum

(iii) Triticum dicoccum (iv) Triticum compactum

(g) Type of inheritance in ABO blood group:

(i) Multiple allele (ii) Co-dominance (iii) Epistasis (iv) Both (i) and (ii)

(h) Yield coefficient represents:

(i) Product formed / biomass produced

(ii) Biomass formed / substrate consumed
(iii) Substrate consumed / biomass formed
(iv) None of these

(i) In DNA, A+G / T+C ratio is:

(i) Constant (ii) 1 (iii) 2 (iv) Not constant

(j) Origin of all alleles is by:

(i) Crossing over (ii) Mutation (iii) Recombination (iv) Replication

Biology for Engineers" (B.Tech 3rd Semester Exam, 2020):

1. Choose the correct answer of the following (any seven) :

(2×7=14)

(a) The term 'biology' was introduced by

(i) Lamarck and Treviranus
(ii) Darwin
(iii) John Ray
(iv) Aristotle

(b) The time dependent permanent deformation is called

(i) plastic deformation
(ii) elastic deformation
(iii) creep
(iv) anelastic deformation
(c) Which of the following is not present in animal cells?
(i) Cell walls
(ii) Mitochondria
(iii) Ribosomes
(iv) Cytoplasms

(d) Normal human blood pressure is

(i) 110/110
(ii) 110/70
(iii) 120/80
(iv) 140/60

(e) Which ancient Indian physician is known as the ‘Father of Surgery’?

(i) Charaka
(ii) Sushruta
(iii) Nagajuna
(iv) Vagbhata

(f) The existence of genes was first suggested by

(i) Gregor Mendel
(ii) George Wells Beadle
(iii) Edward Lawrie Tatum
(iv) Frederick Griffith

(g) Which of the following animals has the longest life span?
(i) Tortoise
(ii) Elephant
(iii) Crocodile
(iv) Dog

(h) Which of the following is the reason for orange colour of carrot?
(i) It grows in the soil
(ii) It contains carotene
(iii) It is not exposed to sunlight
(iv) The entire plant is orange in colour

(i) Rh factor of the blood was discovered by the scientist(s)

(i) Louis Pasteur
(ii) Landsteiner and Weiner
(iii) Jansky
(iv) Moss

(j) The suitable temperature to transport viral culture is

(i) 30°C
(ii) 5°C
(iii) 25°C
(iv) 45°C
✅ 2019 (Biology for Engineers)
(Choose any seven, 2×7=14)

1. (a) In water molecule, the two hydrogen atoms are joined to oxygen atom by covalent
bonds forming an angle of:
(i) 100° (ii) 105° (iii) 110° (iv) 115°

(b) The term ‘enzyme’ was given by:

(i) F. W. Kuhne (ii) Louis Pasteur (iii) Traube (iv) Willstatter

(c) The first enzyme to be isolated in pure crystalline form was:

(i) Zymase (ii) Urease (iii) Invertase (iv) Diastase

(d) Which of the following is not called as sugar?

(i) Starch (ii) Ribose (iii) Glucose (iv) Sucrose

(e) In the three-domain system, traditional bacteria are placed in:

(i) Eubacteria (ii) Eukarya (iii) Archaea (iv) None of the above

(f) A cluster of polar flagella is called:

(i) Peritrichous (ii) Monotrichous (iii) Amphitrichous (iv) Lophotrichous

(g) In gas chromatography, the mobile phase is:

(i) Gaseous (ii) Liquid (iii) Solid (iv) Plasma

(h) An enzyme has Km = 4.7 × 10⁻⁵ M, Vmax = 22 µmol/L/min. What velocity is observed
with 5 × 10⁻⁵ M substrate and 2 × 10⁻⁴ M competitive inhibitor?
(i) 13.54 (ii) 6.68 (iii) 7.57 (iv) 17.8 µmol/L/min

(i) A genetically engineered microbe used for oil spill bioremediation is:
(i) Trichoderma
(ii) Bacillus
(iii) Pseudomonas
(iv) Xanthomonas

(j) Specific death rate of an organism is expressed as:

(i) ln2/D (ii) D/ln2
(iii) D·ln2 (iv) 2-3/ln2
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✅ 2020 Special (B.Tech 3rd Semester Special Exam)

(Choose any seven, 2×7=14)

1. (a) A major discovery of molecular biology during adenovirus replication was:

(i) Function of RT (ii) DNA replication mechanism
(iii) mRNA splicing (iv) Speed of viral DNA polymerase

(b) Movement of particles in liquids and gases is:

(i) Bruneian motion (ii) Brownian motion
(iii) Blackian motion (iv) Randomium motion

(c) Continuous motion of atoms is termed as:

(i) Potential model of atoms (ii) Kinetic model of matter
(iii) Potential model of matter (iv) Kinetic model of atoms

(d) First experiment on life’s origin:

(i) Watson and Crick (ii) Oparin and Haldane
(iii) Urey and Miller (iv) Messelson and Stahl

(e) Which blood type is not possible for AB mother and A father?
(i) A (ii) B (iii) O (iv) AB

(f) DNA strand AACTTG will pair with:

(i) CCGGT (ii) AACTTG (iii) TTCAAG (iv) TTGAAC

(g) Which cross gives 1:2:1 genotypic ratio?

(i) Aa × Aa (ii) AA × Aa (iii) Aa × aa (iv) AA × aa

(h) Postulate of Mendel:

(i) Gametes segregate independently
(ii) Paired unit factors separate
(iii) Unit factors in pairs in organisms
(iv) All of the above

(i) Cell discovery credited to:

(i) Robert Brown (ii) Robert Hooke
(iii) von Mohl (iv) Robertson

(j) Histones are found in:

(i) Nucleus (ii) Vacuole (iii) Lysosome (iv) Spherosome

📚 Subjective Questions (Short/Long Answer)

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🔹 2023 – Subjective (Q2 to Q9)

Q2.
(a) Need of studying biology for engineers
(b) Human eye vs Camera working fundamentals

Q3.
(a) Uni vs Multicellular organisms
(b) Plant vs Animal cells
(c) Laws of inheritance
(d) Molecular taxonomy of organisms

Q4.
(a) Mendel’s law of segregation (example)
(b) Law of dominance and independent assortment

Q5.
(a) Growth kinetics and phases
(b) Amino acids and their types

Q6.
(a) Enzyme action with examples
(b) Enzyme-catalyzed reaction monitoring

Q7.
(a) RNA vs DNA
(b) Transfer of genetic information

Q8. (Write notes on any two)

Genetic disorder in humans

Role of glycolysis in metabolism

Synthesis of glucose in photosynthesis

Q9.
(a) Thermodynamics with free energy
(b) Endothermic vs Exothermic reactions

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🔹 2022 – Subjective (Q2 to Q9)

Q2.
(a) Need of biology for engineers
(b) Why viruses are excluded from classification

Q3.
(a) Prokaryotic vs Eukaryotic cells
(b) Cell theory: significance and objections

Q4.
(a) 7 traits in Pisum sativum
(b) Single gene disorders in humans

Q5.
(a) DNA structure
(b) Types of nucleic acid and nucleotides

Q6.
(a) Function of proteins
(b) Classification of enzymes

Q7.
(a) Species vs Strains
(b) Model organism properties

Q8.
(a) Glycolysis vs Krebs cycle
(b) Thermodynamic laws in biology

Q9. (Short notes – any four)

Brownian motion

Photosynthesis

Test cross

Unicellular organisms

RNA

Meiosis

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🔹 2021 – Subjective (Q2 to Q8)

Q2. (Any 2)
(a) Principle of bird/airplane flight
(b) Define epistasis
(c) Types of proteins
(d) RNA as genetic material

Q3. (Any 2)
(a) Complementation
(b) Secondary structure of proteins
(c) Endothermic reactions in biology
(d) Growth kinetics

Q4. (Any 2)
(a) Autotrophs vs Heterotrophs
(b) Dominant traits in living organisms

Q5. (Any 2)
(a) Importance of biology in engineering
(b) Light microscope principle

Q6. (Any 2)
(a) Biological discoveries and environment
(b) Gene interaction and epistasis

Q7. (Any 2)
(a) Proteins as structure in organisms
(b) Photosynthesis vs Respiration

Q8. (Attempt any 1)

Life’s building blocks & diversity

Compare genetics and Newton’s laws.

🔹 SUBJECTIVE QUESTIONS
✅ 2019
2. Give an illustrated account of the fine structure of an animal cell.

3. Briefly describe the mechanism of protein synthesis in prokaryote cell.

4. Discuss Mendel’s laws. Which is most important and why?

5. Describe thermodynamics and free energy.

6. (a) Difference between living and non-living things

(b) Describe Big-Bang theory

7. Explain how DNA is genetic material with example.

8. Write notes on any two:

(a) Genetic disorder disease
(b) Glycolysis role
(c) Photosynthesis glucose synthesis

9. Draw structure of any two:

(a) DNA and RNA
(b) Mineral translocation
(c) Enzyme kinetics

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✅ 2020 Special
2. Fine structure of a plant cell and functions of organelles.

3. Mechanism of protein synthesis in eukaryotic cell.

4. Genetic consequences of linkage and crossing over.

5. Explain thermodynamics laws in biology.

6. Theories on origin of life on earth.

7. How to identify a cell as prokaryote/eukaryote without a microscope.

8. What is genetic code? Properties of genetic code.

9. Write notes on any two:

(a) Sterilization methods
(b) Protein structures: primary, secondary, tertiary
(c) Calvin cycle for photosynthesis

2020 SUBJECTIVE QUESTIONS

2. Write the answer in very brief of the following: (3½×4=14)

(a) What is the working principle of human eye and digital camera?
(b) Define Mendel’s laws.
(c) Classify about the types of sugars.
(d) How can you say that DNA is a genetic material?

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3. Write the answer in very brief of the following: (3½×4=14)

(a) List the properties of genetic code.

(b) Define the term of primary structure of protein.
(c) List the laws of thermodynamics.
(d) Write the examples of single-cell organism and multicellular organism.

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4. Write the answer in short of the following: (7×2=14)

(a) Differentiate between prokaryote and eukaryote organisms.

(b) What are recessive traits in living organisms?

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5. Write the answer in short of the following: (7×2=14)

(a) Explain about Brownian motion.

(b) Write the parts of light microscope used for observation of cells.

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6. Write the answer in short of the following: (7×2=14)

(a) Discuss how biological discovery of 20th Century led to major investigation in medical
science.
(b) Discuss about Mendel’s laws of segregation and independent assortment.

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7. Write the answer in short of the following: (7×2=14)

(a) How can you say that proteins are transporters and receptors of a living cell?
(b) Differentiate between photosynthesis and transpiration in plant.

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8. How can you prove that biology is an important scientific discipline similar to mathematics,
physics and chemistry?

Answer in detail. (14 marks)

9. Draw the flow chart of Krebs cycle. (14 marks)