Que- Interphase of meiosis lacks
a. G0 phase
b. G1 phase
c. G2 phase
d. S phase
Answer- G2 phase
Que- Homologous chromosomes are
a. Similar and identical
b. Identical but not similar
c. Not similar and not identical
d. Similar but not identical
Answer- Similar but not identical
Que- The longest phase of meiosis I is
a. Metaphase
b. Anaphase
c. Prophase
d. Telophase
Answer- Prophase
Que- Tetrad or bivalent is
a. Paired homologous chromosome but not fused complex structure
b. 2 unpaired homologous chromosome
c. Paired and fused complex structure
d. None of these
Answer- Paired homologous chromosome but not fused complex structure
Que- Pairing of homologous chromosomes is completed in
a. Leptotene
b. Zygotene
c. Pachytene
d. Diplotene
Answer- Pachytene
Que- Each bivalent has
a. 3 chromatids
b. 4 chromatids
c. 5 chromatids
d. 2 chromatids
Answer- 4 chromatids
Que- Crossing over occurs between
a. Sister chromatids
b. Non sister chromatids
c. Independent chromatids
d. Each and every chromatid
Answer- Non sister chromatids
Que- Inability of chromosomes to segregate during anaphase and telophase of meiosis is called
a. Crossing over
b. Chromosomal disjunction
c. Chromosomal nondisjunction
d. None of these
Answer- Chromosomal nondisjunction
Que- Which statement is incorrect?
a. Down's syndrome involves autosome
b. In Turner's syndrome 2n-1
c. In Klinefelter's syndrome XYY
d. In Down's syndrome sperms are commonly involved
Answer- In Down's syndrome sperms are commonly involved
Que- Apoptosis
a. Cell death due to tissue damage
b. Causes inflammation
c. Internal programme of events by which cell commits suicide
d. Damages neighboring cells
Answer- Internal programme of events by which cell commits suicide
Que- A cell of human being has 46 chromosomes; it divides to form some daughter cells, each having 23 pairs of chromosomes. The division would be
a. Mitosis
b. Meiosis
c. Amitosis
d. Budding
Answer- Mitosis
Que- Mitosis takes place during
a. Healing of wound
b. Development and growth
c. Vegetative propagation
d. All of these
Answer- All of these
Que- Which of the following category comes under Turner's syndrome?
a. A male having 2 X chromosomes
b. A female having 3 X chromosomes
c. A male having only 1 Y chromosome
d. A female having only 1 X chromosome
Answer- A female having only 1 X chromosome
Que- Morphology of chromosomes is best studied during
a. Telophase
b. Metaphase
c. Prophase
d. All of these
Answer- Metaphase
Que- Cytokinins refers to
a. Division of nucleus
b. Division of cytoplasm
c. Division of cell
d. All of these
Answer- Division of cell
Que- Which fibers intedigitate with each other?
a. Astral fibers
b. Kinetochore fibers
c. Polar fibers
d. All of these
Answer- Polar fibers
Que- Cancer cells are
a. Differentiated
b. Undifferentiated
c. Highly differentiated
d. Less differentiated
Answer- Less differentiated
Que- Crossing over in meiosis occurs during
a. Zygotene
b. Pachytene
c. Dislotene
d. Diakinesis
Answer- Pachytene
Que- Which division does not show replication of chromosomes?
a. Mitosis
b. Meiosis I
c. Meiosis II
d. None of these
Answer- Meiosis II
Que- A significant happening of meiosis is / are
a. Crossing over
b. Random assortment
c. Both of these
d. None of these
Answer- Both of these
Que- Jacob's syndrome can be represented as
a. XO
b. XXX
c. XXY
d. XYY
Answer- XYY
Que- The branch of biology which deals with the study of chemical compounds and the chemical processes in the fliving organisms is called:
a. Chemistry
b. Biochemistry
c. Molocular biology
d. Both a and b
Answer- Biochemistry
Que- Which one is an organic compound?
a. CO2
b. Water
c. Lipids
d. HCI
Answer- Lipids
Que- Which chemical component has the same % in bacterial as well as the mammalian cell?
a. Water
b. Carbohydrate
c. Proteins
d. Lipids
Answer- Water
Que- Which chemical component has the greatest contribution in the total mammalian cell weight?
a. Proteins
b. Carbohydrate
c. Lipids
d. Water
Answer- Water
Que- Reactions in which simple substances are combined to form complex substances are called:
a. Metabolic reactions
b. Catabolic reactions
c. Anabolic reactions
d. None of these
Answer- Anabolic reactions
Que- Which one is the basic element of organic compounds ?
a. Oxygen
b. Hydrogen
c. Sulphur
d. Carbon
Answer- Carbon
Que- The bond formed when two or more atoms complete their electron shells by sharing electrons is called:
a. Ionic bond
b. Hydrogen bond
c. Covalent bond
d. Electrovalent bond
Answer- Covalent bond
Que- Carbon atom is
a. Monovalent
b. Divalent
c. Trivalent
d. Tetravalent
Answer- Tetravalent
Que- Which bond provides stability to complex carbohydrate molecules?
a. C-H
b. C-O
c. C-C
d. C-N
Answer- C-C
Que- % of water in brain cells is
a. 0.2
b. 0.8
c. 0.85
d. 0.9
Answer- 0.85
Que- Which statement is true about an aqueous medium:
a. Ionic as well as non ionic substance in aqueous media retains their identity.
b. Enzymes can not perform catalysis reaction in this medium.
c. Ions and molecules move randomly thus are in more favorable state to react with other molecules and ions.
d. It is less favorable media for chemical reactions.
Answer- Ions and molecules move randomly thus are in more favorable state to react with other molecules and ions.
Que- Which of the following substance is most favorable to form structural component of biological membranes?
a. Hydrophilic Carbohydrates
b. Hydrophobic fats.
c. Both a and b
d. None of these
Answer- Hydrophobic fats.
Que- The number of calories required to raise the temperature of 1g of water from 15 to 16?C is called?
a. Specific Heat of Vaporization
b. Specific Heat capacity
c. Caloric Heat
d. Both A and C
Answer- Specific Heat capacity
Que- The property of water due to which it works as a temperature stabilizer and hence protect living organisms from sudden thermal changes is:
a. High specific heat of vaporization
b. High specific heat capacity
c. Its Dipole nature
d. Its liquid state
Answer- High specific heat capacity
Que- Specific heat of vaporization of water is:
a. 574 Kcal/kg
b. 674 Kcal/kg
c. 774 Kcal/kg
d. 874 Kcal/kg
Answer- 574 Kcal/kg
Que- A complex substance which on hydrolysis yields polyhydroxy aldehyde or ketone subunits is called:
a. Lipid
b. Carbohydrate
c. Protein
d. Carotein
Answer- Carbohydrate
Que- Cn(H2O)n. is a general formula of :
a. Monosaccharides
b. Oligosaccharides
c. Ploysacharides
d. Carbohydrates
Answer- Monosaccharides
Que- Which of the statement is not true for compounds like glycoprotein and glycolipids?
a. They are conjugated molecules of carbohydrates
b. Both have role in the extra cellular matrix of animals and bacterial cell wall
c. They are components of biological membranes.
d. Both are produced and secreted by endoplasmic reticulum
Answer- Both are produced and secreted by endoplasmic reticulum
Que- Which one are most complex sugar:
a. Monosaccharides
b. Oligosaccharides
c. Polysaccharides
d. None of these
Answer- Polysaccharides
Que- Which of the following carbohydrate is tasteless?
a. Monosaccharide
b. Oligosaccharide
c. Polysaccharide
d. None of these
Answer- Polysaccharide
Que- Which of the following carbohydrate can not be hydrolysed?
a. Monosaccharide
b. Oligosaccharide
c. Polysaccharide
d. None of these
Answer- Monosaccharide
Que- Ribose is an example of
a. Trioses
b. Tetroses
c. Pentose
d. Hexose
Answer- Pentose
Que- Starch cellulose and glaycogen yield ________ on complete hydrolysis.
a. Maltose
b. Sucrose
c. Fructose
d. Glucose
Answer- Glucose
Que- Which one is abundant in animals?
a. Starch
b. Glycogen
c. Cellulose
d. None of these
Answer- Glycogen
Que- Which one is soluble in hot water?
a. Starch
b. Glycogen
c. Amylose
d. Amylopectin.
Answer- Amylose
Que- The covalent bond between two monosaccharide subunits is called:
a. Phosphodiester bond
b. Peptide bond
c. Glycosidic Bond
d. Ionic bond
Answer- Glycosidic Bond
Que- Which one gives blue colour with iodine?
a. Starch
b. Glycogen
c. Cellulose
d. Polysaccharide
Answer- Starch
Que- Which of the following polysaccharide is called animal starch?
a. Starch
b. Glycogen
c. Cellulose
d. None of these
Answer- Glycogen
Que- _________ is example of pure form of cellulose
a. Silk
b. Wool
c. Cotton
d. Paper
Answer- Cotton
Que- Lipids are soluble in which of the following :
a. Water
b. Ether
c. All solvents
d. Not in any of the above
Answer- Ether
Que- Lipid molecules can store double amount of energy as compared to same amount of carbohydrate because of high number of
a. C-C bonds
b. C-H bonds
c. C-N bonds
d. C-O bonds
Answer- C-H bonds
Que- A compound produced as a result of a chemical reaction of an alcohol with an acid in which water molecule is released is called:
a. Monosaccharide
b. Fatty acid
c. Neutral lipid
d. Nucleic acid
Answer- Neutral lipid
Que- Fatty acids containing 18 C atoms and a single double bond is
a. Saturated Fatty acid
b. Unsaturated fatty acid
c. Oleic Acid
d. Plamitic acid
Answer- Oleic Acid
Que- Which one the following fatty acid is more soluble in an organic solvent and has higher melting point?
a. Acetic acid
b. Butyric acid
c. Palmitic acid
d. All have same
Answer- Palmitic acid
Que- Which of the following statement is incorrect5 for fats containing unsaturated fatty acid?
a. They contain double bond
b. They are usually solid at room temperature
c. They are lighter than water
d. Their specific gravity is less than 1
Answer- They are usually solid at room temperature
Que- Animals obtain carbohydrates mainly from
a. Glucose
b. Starch
c. Sucrose
d. Glycogen
Answer- Starch
Que- Peptide bond is:
a. C-N link
b. C- O lind
c. N-H link
d. C-H link
Answer- C-N link
Que- Chemical component/s less in eukaryotic cell as compared to prokaryotic cell is / are (i) lipids (ii) carbodydrates (iii) proteins (iv) DNA
a. i & ii
b. iii & iv
c. i ii iii & iv
d. iv only
Answer- iv only
Que- Proteins comprise of _____% of the total dry weight of a cell.
a. 0.4
b. 0.5
c. 0.6
d. 0.7
Answer- 0.5
Que- Proteins are polymers of
a. Fatty acids
b. Isoprenoid units
c. Amino acids
d. Nucleotides
Answer- Amino acids
Que- The element in basic structure of proteins which differentiate them from carbohydrates is
a. C
b. S
c. H
d. N
Answer- S
Que- Total number of amino acids discovered so far in cells and tissues are
a. 20.0
b. 25.0
c. 150.0
d. 170.0
Answer- 170.0
Que- In Glycin an amino acid R group is replaced by
a. H
b. CH3
c. COOH
d. C = O
Answer- H
Que- A bond formed by linkage between -OH of carboxyl group of one amino acid and H of amino group of another amino acid which releases water is called
a. Phosphodiester linkage
b. Glycosidic bond
c. Peptide bond
d. Hydrogen bond
Answer- Peptide bond
Que- Total number of amino acids in a hemoglobin molecule are:
a. 554.0
b. 564.0
c. 574.0
d. 584.0
Answer- 574.0
Que- An insulin molecule consists of _____ polypeptide chains.
a. 1.0
b. 2.0
c. 3.0
d. 4.0
Answer- 2.0
Que- Which structure of protein gives information aboutnumber and sequence of amino acids in it?
a. Primary structure
b. Secondary structure
c. Tertiary structure
d. Quaternary structure
Answer- Primary structure
Que- In an aqueous environment the most stable tertiary conformation is that in which ______ amino acids are buried inside the conformation.
a. Hydrophobic
b. Hydrophilic
c. Basic
d. None of these
Answer- Hydrophobic
Que- Hemoglobin molecule exhibits which structural organization of proteins
a. Primary structure
b. Secondary structure
c. Tertiary structure
d. Quaternary structure
Answer- Quaternary structure
Que- Which of the following does not show quaternary structure?
a. Haemoglobin
b. Pepsin
c. Fibrin
d. Insulin
Answer- Fibrin
Que- Which structural organization is most common in globular proteins?
a. Primary
b. Secondary
c. Tertiary
d. Quaternary
Answer- Tertiary
Que- Actin and myosin are the basic proteins involved in contractile machinery of our body to which type of proteins do they belong?
a. Globular proteins
b. Fibrous Proteins
c. Both a and b
d. None of these
Answer- Fibrous Proteins
Que- Antibodies play important role against microorganisms and other pathogens to which type of proteins do they belong?
a. Globular proteins
b. Fibrous Proteins
c. Both a and b
d. None of these
Answer- Globular proteins
Que- ATP is a an important molecule for its major function
a. As an energy currency of the cell
b. As a coenzyme
c. Both a and b
d. None of these
Answer- As an energy currency of the cell
Que- Each turn of DNA contain _______ nitrogenous base pairs
a. 5.0
b. 10.0
c. 20.0
d. 25.0
Answer- 10.0
Que- The first organism of whose genome was completely discovered was
a. Human beings
b. Influenza Virus
c. Hemophilus Influenza
d. None of these
Answer- Hemophilus Influenza
Que- Which of the following statement is incorrect about RNA?
a. The pentose sugar in it is Ribose.
b. It contains Adenine Guanine Thymine and Cytosine
c. It is present in the nucleoli
d. It may be folded back on itself to give double helical characteristics.
Answer- It contains Adenine Guanine Thymine and Cytosine
Que- rRNA constitutes _____ % of the total cellular RN
a. 3-4 %
b. 10-20%
c. 0.8
d. 0.9
Answer- 0.8
Que- There are mainly _______ types of tRNA
a. 170.0
b. 20.0
c. 25.0
d. 15.0
Answer- 20.0
Que- Most of the cellular secretions are _____ in nature.
a. Glycolipids
b. Glycoproteins
c. Nucleohistones
d. Proteins
Answer- Glycoproteins
Que- Which conjegated molecules play important role in gene expression?
a. Glycolipids
b. Glycoproteins
c. Nucleohistones
d. None of these
Answer- Nucleohistones
Que- The survival of an animal depends upon its ability to take some from its environment
a. Chemicals
b. Hydrocarbons
c. Organic molecules
d. Inorganic molecules
Answer- Organic molecules
Que- Interconversion of carbohydrates proteins and lipids in living cells are an example of
a. Coordinated catabolic activities
b. Coordinated anabolic activities
c. Both A and B
d. Any one
Answer- Both A and B
Que- Carbon commonly combines with
a. H
b. N & O
c. P & S
d. All of these
Answer- All of these
Que- Non polar organic molecules are _______ in water.
a. Soluble
b. Insoluble
c. Partially soluble
d. Depends upon condition
Answer- Insoluble
Que- In living organisms the lubricant which provides protection against damage resulting from friction is
a. Carbohydrates
b. Fatty acid
c. Water
d. Protein
Answer- Water
Que- In Cx(H2O)y x ranges from
a. 1 to 3 thousand
b. 3 to many thousand
c. 3 to 5 thousand
d. 5 to 9 thousand
Answer- 3 to many thousand
Que- Glycolipids and glycoproteins have structural role in the _____ matrix of animal and bacterial cell
a. Extracellular
b. Intracellular
c. Both of these
d. Glucose
Answer- Extracellular
Que- The trioses which are intermediate in respiration and photosynthesis are
a. Glyceraldehydes
b. Dihydroxy acetone
c. Both of these
d. None of these
Answer- Both of these
Que- Keto group is represented as
a. CO
b. C-COO-C
c. HCOH
d. HOH
Answer- CO
Que- The monosaccharide found in some bacteria and occurring rarely are
a. Trioses
b. Hexoses
c. Tetroses
d. Pentoses
Answer- Tetroses
Que- How many carbon atoms are required to form a furan ring (ribofuranose)
a. 3.0
b. 4.0
c. 5.0
d. 2.0
Answer- 4.0
Que- In esterification OH comes from
a. Organic acid
b. Alcohol
c. Water
d. Sugar
Answer- Alcohol
Que- Triglyceride is also known as
a. Natural lipid
b. Neutral lipid
c. Neutral wax
d. All of these
Answer- Neutral lipid
Que- Which one is not found in fatty acids in acylglycerols?
a. C-6
b. C-25
c. C-26
d. C-30
Answer- C-25
Que- Animals fats are ___________ atroom temperature
a. Liquids
b. Gases
c. Solids
d. None of these
Answer- Solids
Que- Biological molecules (proteins) which catalyze a biochemical reaction and remain unchanged after completion of reaction are called
a. Cofactor
b. Coenzymes
c. Activator
d. Enzymes
Answer- Enzymes
Que- Which statement about enzyme is incorrect:
a. Some of them consist solely of protein with no non protein part.
b. They catalyze a chemical reaction without being utilized.
c. All enzymes are fibrous Proteins.
d. They without their cofactor are called apoenzyme.
Answer- All enzymes are fibrous Proteins.
Que- In which of the following location enzymes controlling cellular respiration are present?
a. Nucleus
b. Chlorophast
c. Milochondria
d. Ribosome
Answer- Milochondria