Chapter 1 & 2

Simple tissue is formed by cells with
(A) Similar structure and different function
(B) Similar function but different structure
(C) Similar structure & function
(D) Different structure & function
ans.c


Cloning could make
(A) Multiple copies of desired genotype (B) Used to produce genetically identical cattle
(C) Commercial production of valuable animals (D) All of these


ans.d


A community with less number of populations will be
(A) Fragile (B) More stable (C) Complex (D) Less vulnerable


ans.a


Which one is the macromolecule
a. carbon dioxide b. starch
c. water d. both a & c
 ans.b

Function of xylem tissue
a. to absorb water from soil b. to conduct water up to leaves
c. to distribute salts d. to supply food

 ans..b
Oldest period Paleozoic era is
a. Permian b. Cambrian
c. Devonian d. Sularian
 ans..b

Unit of enzymes is
a. atom b. amino acid
c. cell d. fatty acids
 ans.b

If insects in a rice field are controlled by means of stocking fish into the field it would be a
(a) physical control (b) biological control (c) chemical control (d) botanical control
ans.b


Technique developed for repair of a faulty sequence of nucleotides is
(a) chemotherapy (b) physiotherapy (c) gene therapy (d) radio therapy
ans.c


One of the following is not a characteristic of a hypothesis
(A) Experiments can prove it true or false
(B) It can be converted into a theory or a law
(C) It is less explanatory than theory or law
(D) It is always a religious idea


ans.d


Which one of the following is not well definite in plants than animals?
(A) Tissue (B) Organs.
(C) Cells (D) All of these


ans.b


All of the following  produce transgenic organism except
(A) Introduction of desired gene in the organism
(B) Replacement of nucleus of unfertilized egg with a diploid of nucleus somatic cell
(C) Produced from zygote (D) Asexual reproduction

Ans…c
Which level of biological organization is less definite in plants?
(a) subatomic level (b) organ level (c) organ system level (d) organelle level
ans.c


Physicochemical parameters of water bodies are studied in the sub-discipline of
(a) microbiology (b) limnology (c) human biology (d) biotechnology
ans.b


Social behavior is studied under
(a) biology (b) human biology (c) humanology (d) none of these
ans.


Best organism that can be used to reduce pollution of heavy metals by bioabsorption is
(a) fungi (b) bacteria (c) algae (d) all of these
ans.c


Mesozoic is the Era of
(a) birds (b) reptiles (c) gymnosperms (d) both b & c
ans.d


What is percentage trace elements in human
(a) less than 1% (b) .046% (c) .064% (d) .004%
ans.a


In nature no normal animal reproduce
(a) by asexual method (b) by sexual method (c) by budding (d) by cloning
ans.d


Stress because of limited resources on a population is
(a) gene flow (b) population density (c) population pressure (d) age distribution
ans.c


Preserved record as fossils is missing for
(a) mammals (b) birds (c) reptiles (d) soft bodied organism
ans.d



The fibrous protein is
a. haemoglobin b. keratin
c. enzyme d. hormones
ans…b

A short length of DNA molecule contains 120 adenine and 120 cytosine bases. The total number of Nucleotides in this DNA seq. is
(a) 60 (b) 240 (c) 120 (d) 480
 Ans..d

Endoplasmic reticulum would not be present in
(a) animal cell (b) plant cell (c) bacterial cell (d) muscle cell

 Ans..c
The most diverse molecule in cell are
(a) mineral salts (b) lipids (c) proteins (d) carbohydraies


Hydrolysis of nucleosides does not yield
(a) pentose sugar (b) phosphoric acid (c) pyrimidine (d) purine

 Ans..b
Glycerol and fatty acids combine to form
(a) waxes (b) phospholipids (c) acylglycerols (d) sphingolipids

 Ans..c
The melting point of butyric acids is
(a) 63.1oC (b) –20 oC (c) –8 oC (d) –15 oC

 Ans.c
One of the following is rearly found in the form of polymeres
(a) proteins (b) lipids (c) polysaccharides (d) DNA

 Ans..b
Glycosidic link present in cellulose is
(a) a 1–4 (b) ß 1–4 (c) a 1–6 (d) all of these
 Ans…b

The general formula for monosecharides is
(a) (CHO)n (b) (CH2O)n (c) (CH3O)n (d) none of these
 Ans….b

Most important carbohydrate for animal is
(a) glycogen (b) starch (c) glucose (d) cellulose

 Ans…a
Proteins tertiary structure is maintained by all except
(a) ionic bond (b) coordinate covalent bond
(c) hydrogen bonding (d) disulfide
 Ans…b

Monosaccharide that forms a five cornered ring is
(a) ribulose (b) ribose (c) glucose (d) both a & b

 Ans..d
Peptide link is a
(a) C–N (b) C–O (c) C–S (d) both a & c
 Ans…a

Most abundant RNA in the cell is
(a) rRNA (b) tRNA (c) mRNA (d) cRNA

 Ans….a
Specific gravity of fats is
(a) 0.8 gm/cm3 (b) 8 gm/cm3 (c) 10 gm/cm3 (d) none of these
 Ans…a


Q:1: The branch of biology that deals with the study of in-organic and organic molecules that make up the body of a living organism is


(A) Pharmacology
(B) Biochemistry
(C) Both A and B
(D) Pharmaco-dynamics
 Ans…b

Q:2: The six bio-elements that make up 99% of protoplasm are


(A) C, H, O, N, Mg+, K+
(B) C, H, O, N, Mg+, Na+
(C) C, H, O, N, Cl-, K+
(D) C, H, O, N, P, Ca

 Ans…d


Q:4: Atoms form bonds by


(A) Gaining of electrons
(B) Losing of electrons
(C) Sharing of electrons
(D) All A, B and C
 Ans…d


Q: A _______________ occurs as bonds are formed or broken between atoms, ions or molecules.


(A) Chemical reaction
(B) Physical reaction
(C) Thermal reaction
(D) None of the above

 Ans…a

Q:7: Electrolytes that release hydrogen ions in water are called


(A) Acids
(B) Bases
(C) Amphoteric
(D) All options are correct

 Ans…a
Q:8: It is the most abundant compound in living organisms and makes up two-thirds of the weight of adults.


(A) Protein
(B) Water
(C) Carbohydrate
(D) Nucleic acid

 Ans…b
Q:9: ATP releases energy when


(A) It undergoes a condensation reaction
(B) A hydroxyl group is added to it
(C) A phosphate group is added to it
(D) A phosphate group is removed from it


Q:10: A fatty acid is a compound made of a chain of carbon atoms plus


(A) An acid group at one end
(B) Acid group at both ends
(C) An amino group
(D) Amino group at both ends


 Ans…a
Q:11: A bond that forms between a positively charged hydrogen atom of one molecule and a negative charged region of another molecule is a(n)


(A) Ionic bond
(B) Hydrogen bond
(C) Covalent bond
(D) Basic bond

 Ans…b
Q:12: Dehydration and hydrolysis reactions involve removing or adding ___________to macromolecule subunits.


(A) CH and NH2
(B) C and H
(C) -COOH and H
(D) OH and H

 Ans…d

Q:14: Nucleotides have a nitrogenous base attached to a sugar at the


(A) 1’ carbon
(B) 3’ carbon
(C) 4’ carbon
(D) 5’ carbon
 Ans…a

Q:15: If three molecules of a fatty acid, each having the formula C16H22COOH, were joined to a molecule of glycerol (C3H8O3), the resulting molecule would have the formula


(A) C48H68O6
(B) C48H74O6
(C) C54H71O6
(D) C54H68O9


Q:17: Monosaccharides contain carbon atoms


(A) 3-7
(B) 3-6
(C) 3-9
(D) 3-10
 Ans…a

Q:18: Stearin is


(A) Fatty acid
(B) Saturated acylglycerol
(C) Unsaturated acylglycerol
(D) None of these


Q:19: Energy absorbed to change water from liquid to gas is called


(A) Latent heat of fusion
(B) High surface tension
(C) Heat of vaporization
(D) High heat capacity
 Ans…c

Q:20: The sources of carbohydrates are green plants. These are primary product of


(A) Respiration
(B) Catabolism
(C) Photosynthesis
(D) All A, B and C

 Ans…c
Q:21: It is most abundant carbohydrate in the nature


(A) Glycogen
(B) Chitin
(C) Lignin
(D) Cellulose

 Ans…d
Q:22: It is the most abundant organic component in living cells.


(A) Lipid
(B) Carbohydrate
(C) Water
(D) Protein

 Ans….d
Q:23: Each of the 20 naturally occurring amino acids has a different


(A) NH2 group
(B) –COOH group
(C) R group
(D) –OH group

 Ans…c
Q:24: The sum of all the chemical reaction that occurs in the body is known as


(A) Anabolism
(B) Metabolism
(C) Catabolism
(D) Differentiation

 Ans…b
Q:25: Which is an organic molecule


(A) H2O
(B) H2SO4
(C) NO2
(D) C6H12O6
 Ans…d

Q:26: Which class of molecule is the major component of cell membrane


(A) Phospholipid
(B) Cellulose
(C) Wax
(D) Triglyceride

 Ans…a
Q:27: Peptide bonds are found in


(A) Protein
(B) Carbohydrate
(C) Lipids
(D) Inorganic compounds

 Ans….a
Q:28: Glycerol is the back bone molecule for


(A) Disaccharides
(B) DNA
(C) Triglycerides
(D) ATP
 Ans…c

Q:29: When a protein undergoes a hydrolysis reaction the end-products are


(A) Amino acids
(B) Monosaccharides
(C) Fatty acids
(D) Nucleotides

 Ans….a
Q:30: Which of the following is considered to be neutral


(A) Urine
(B) Pure water
(C) Cytoplasm
(D) HCL

 Ans…b
Q:31: The functional group –COOH is


(A) Acidic
(B) Basic
(C) Never ionized
(D) All options are correct

 Ans…..a
Q:32: Which of these is an example of hydrolysis


(A) Amino acid + amino acid – Dipeptide + H2O
(B) Dipeptide + H2O—amino acid + amino acid
(C) Both A and B
(D) Neither of these is correct

 Ans….b
Q:33: A fatty acid is unsaturated if it


(A) Contains hydrogen
(B) Contains double bonds
(C) Contains an acidic group
(D) Bonds to glycogen

 Ans….b
Q:34: A hormone is an example of which functional class of proteins.


(A) Contractile
(B) Structural
(C) Regulatory
(D) Cyclic
 Ans…c

Q:35: The Sugar found in RNA is


(A) Fructose
(B) Galactose
(C) Deoxyribose
(D) Ribose

 Ans….d

Q:36: Steroid are classified as


(A) Carbohydrates
(B) Lipids
(C) Proteins
(D) Nucleic acids

 Ans…b
Q:37: Hemoglobin is an example of which functional class of protein


(A) Contractile
(B) Structural
(C) Regulatory
(D) Transportive

 Ans…d
Q:38: In RNA the Nitrogen base that takes the place of thymine is


(A) Adenine
(B) Cytosine
(C) Uracil
(D) Guanine

 Ans….c
Q:39: The Suffix that denotes a sugar is


(A) ase
(B) ose
(C) ide
(D) amide

 Ans…b
Q:40: Two different molecule belonging to different categories, usually combine together to form


(A) Homomer molecule
(B) Macro molecule
(C) Conjugated molecule
(D) All options are correct

 Ans…c
Q:41: It is an animal storage product that accumulates in the vertebrate liver and muscles.


(A) Cellulose
(B) Chitin
(C) Glycogen
(D) Fructose


 Ans….c

Q:42: Asymmetrical lipid molecules with a hydrophilic head and a hydrophobic tail, with a phosphate group in place of one of the three fatty acid chains.


(A) Wax
(B) Terpenoid
(C) Steroid
(D) Phospholipid

 Ans…d
Q:43: acylglycerol that are solid at room temperature.


(A) Fats
(B) Oils
(C) Linoleic acid
(D) None of these
 Ans…c???
Q:44: Triglycerides that are liquid at room temperature.


(A) Fats
(B) Oils
(C) Stearin
(D) All of these
 Ans….ans c????


Q:46: Nucleic acids are polymers composed of monomer units known as


(A) Amino acids
(B) Nucleosides
(C) Nucleotides
(D) Nitrogenous bases

 Ans…c
Q:47: There are __________ nitrogenous bases.


(A) Four
(B) Five
(C) Six
(D) Three

 Ans…5


Q:48: The form of RNA that delivers information from DNA to be used in making a protein is ________________.


(A) messenger RNA
(B) ribosomal RNA
(C) transfer RNA

 Ans…c
Q:49: RNA occurs in


(A) Nucleus
(B) Cytoplasm
(C) Both A and B
(D) Nucleoplasm

 Ans….c
Q:50: The monomer that makes up polysaccharides is


(A) Amino acids
(B) Glucose
(C) Fatty acids
(D) Glycerol

 Ans…b
Q:51: Which of these is NOT a function of lipids?


(A) Long term energy storage
(B) Structures in cells
(C) Sex hormones
(D) Enzymes
 Ans…d

Q:52: All living things use the same ___ amino acids.


(A) 4
(B) 20
(C) 100
(D) 64
 Ans…b

Q:53: Which of these is NOT a nucleotide base found in DNA?


(A) Uracil
(B) Adenine
(C) Guanine;
(D) Thymine

 Ans…a


Q:54: ATP consists of the ____________________, ribose sugar, , and phosphate group, PO4-2) plus two other phosphate groups.


(A) Cytosine base
(B) Guanine base
(C) Thymine base
(D) Adenine base
Ans…d


Q:55: Membrane carbohydrates when linked to lipids are called


(A) Sphingolipids
(B) Glycolipids
(C) Phospholipids
(D) Sterols


Q:56: Lactose is present in


(A) Sugar cane
(B) Fruits
(C) Milk
(D) Egg

 Ans…c
Q:57: A disaccharide that gives two molecules of glucose on hydrolysis is


(A) Sucrose
(B) Lactose
(C) Maltose
(D) None of these

 Ans…c
Q:58: In sugar cane and sugar beet, the storage product is


(A) Maltose
(B) Sucrose
(C) Lactose
(D) Isomaltose

 Ans…b
Q:59: One molecule of glucose and one molecule of galactose form


(A) Maltose
(B) Sucrose
(C) Lactose
(D) Isomaltose
 Ans…c

Q:60: Nucleic acids are related with


(A) Respiration
(B) Photosynthesis
(C) Heredity
(D) None of these

 Ans…c
Q:61: Waxes from protective coating on


(A) Leaves
(B) Fruits
(C) Animal’s skin
(D) All of these
 Ans….d

Q:62: The four nitrogenous bases which form the code words for DNA language are


(A) ACTU
(B) UTAC
(C) AGTU
(D) AGCT

 Ans…d
Q:63: DNA and RNA differ in


(A) Sugar only
(B) Sugar and purines
(C) Sugar and pyrimindines
(D) Sugar & phosphate

 Ans…c
Q:64: A bond formed between carboxylic acid and alcohol is


(A) Ester bond
(B) Amide bond
(C) Phosphate bond
(D) Ionic bond
 Ans…a

Q:65: When amino acids in a polypeptide chain are arranged in spiral manner, it is called


(A) Primary structure
(B) Secondary structure
(C) Tertiary structure
(D) Quaternary structure

 Ans….b


Q:66: The step of protein synthesis in which the information contained specific segment of DNA is copied into RNA is called


(A) Transduction
(B) Translation
(C) Transformation
(D) Transcription

 Ans….d
Q:67: Choose the pair of terms that completes this sentence
Nucleotides are to __________as ____________ are proteins.


(A) Aminoacids______Polypeptides
(B) Genes _______ Enzymes
(C) Nucleic acids _____ Amino acids
(D) Polymers _____ Peptides

 Ans…c
Q:68: Which of these terms includes all others in the list


(A) Nucleic acid
(B) Purine
(C) Nucleotide
(D) Nitrogenous base
 Ans….a

Q:69 The compounds made up of simple repeating isoprenoid units are called


(A) Neutral lipids
(B) Terpenoids
(C) Waxes
(D) All of these
 Ans…b