Genetics Question Online Test 12

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1. The law of dominance is illustrated in the garden pea by

• heterozygous tall × heterozygous tall
• homozygous tall × homozygous tall
• pure short × pure dwarf
• homozygous tall × pure dwarf

2. Which of the following Mendel’s laws has not been proved to be true in all cases?

• Law of segregation
• Mendel’s second law of inheritance
• Law of dominance
• Law of purity of gametes

Genetics Question Online Test 11

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1. Mendel grouped all contrasting characteristics in _______ pairs.

• 15
• 14
• 7
• 6

2. The conclusion drawn by Mendel based on monohybrid cross was

• each factor exist in two contrasting or alternative forms
• one of the forms is dominant and other is recessive.
• inheritance of each character is controlled by a pair of factors
• all of the above

Genetics Questions Online Test 10

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1. To eliminate chance factor, Mendel performed

• monohybrid cross
• dihybrid cross
• reciprocal cross
• trihybrid cross

2. Mendel always started his experiment(Monohybrid and Dihybrid cross) with

• any pea plant
• a heterozygous plant
• a pure line plant
• a fresh new plant

Genetics MCQs part 9

Solve Genetics Questions Online Test for 11th and 12th, Bachelor Studies,competitive Examination like CSIR NET, CBSE NEET, IELTS, GRE etc .

1. The external appearance of an individual for any trait is called as

• phenotype
• karyotype
• morphology
• physique

2. Genotype is

• genetic constitution of an organism
• genetic constitution of somatic cells
• genetic constitution of plastids
• genetic constitution of germ cells

3. Homozygous individuals

• breed true to the trait
• does not breed true to the trait
• produce only one type of gamete
• both (A) and (C)

4. Which of the following term indicates a pair of dissimilar alleles?

• Homozygous
• Heterozygous
• Homologous
• All of these

5. A cross between two pure individuals, differing in atleast one set of characters, is called

• monohybrid
• polyploid
• mutant
• variant

6.F₁ generation means

• first flowering generation
• first fertile generation
• first filial generation
• first seed generation

7. Filial means

• offsprings produced in sexual reproduction
• offsprings produced in asexual reproduction
• offsprings produced in vegetative reproduction
• both (B) and (C)

8. F2 generation is produced by

• crossing F1 progeny with one of the parents
• selfing the heterozygous progeny
• selfing the parents
• a cross between recessive parents

9. In genetics, the use of checkerboard was done by

• Mendel
• Correns
• Punnet
• Darwin

10. Mendel, in his experiments

• maintained qualitative records
• maintained quantitative records
• conducted ample crosses and reciprocal crosses
• all of the above

Score =

Correct answers:

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Genetics MCQs part 8

Solve Genetics Questions Online Test for 11th and 12th, Bachelor Studies,competitive Examination like CSIR NET, CBSE NEET, IELTS, GRE etc .

1. The botanical name of garden pea is

• Pisum sativum
• Lathyrus odoratus
• Mangifera indica
• Solanum tuberosum

2. Which of the following is a dominant character in pea?

• Wrinkled seeds
• Inflated pod
• Terminal flower
• Dwarf plant

3. Which of the following character was not considered by Mendel?

• Seed coat colour
• Wrinkled or round leaves
• Tallness or dwarfness
• Position of flower

4. An inherited character and its detectable variant is called

• allele
• trait
• gene
• both (A) and (B)

5. Which one of the following best describes a gene?

• A triplet of nucleotide bases
• A specific length of DNA responsible for the inheritance and expression of the character
• A specific length of single stranded RNA
• Both (B) and (C)

6. Mendel’s “factors” are in fact

• units
• chromosomes
• genes
• none of these

7. Who coined the term ‘gene’ for ‘factor’?

• Mendel
• Morgan
• Johannsen
• Punnett

8. Alleles or allelomorphs occupy

• same position on homologous chromosomes
• same position on heterozygous chromosomes
• different position on homologous chromosomes
• different position on heterozygous chromosomes

9. Who proposed the term ‘Allelomorph’?

• Hugo De Vries
• Morgan
• Tschermak
• Bateson

10. Dominant allele means

• an allele whose effect is masked by another allele
• an allele that prevents the expression of the other allele
• an allele without any effect
• an allele which cannot express in presence of other

Score =

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Enzymes MCQs Part 7

1. In acute pancreatitis, the enzyme raised in first five days is

• Serum amylase
• Serum lactic dehydrogenase
• Urinary lipase
• Urinary amylase

2. Acute pancreatitis is characterised by

• Lack of synthesis of zymogen enzymes
• Continuous release of zymogen enzymes into the gut
• Premature activation of zymogen enzymes
• Inactivation of zymogen enzymes

3. An example of functional plasma enzyme is

• Lipoprotein lipase
• Amylase
• Aminotransferase
• Lactate dehydrogenase

4. A non-functional plasma enzyme is

• Psudocholinesterase
• Lipoprotein lipase
• Proenzyme of blood coagulation
• Lipase

5. The pH optima for salivary analyse is

• 6.6–6.8
• 2.0–7.5
• 7.9
• 8.6

6. The pH optima for pancreatic analyse is

• 4.0
• 7.1
• 7.9
• 8.6

7. The pH optima for sucrase is

• 5.0–7.0
• 5.8–6.2
• 5.4–6.0
• 8.6

8. The pH optima for maltase is

• 1.0–2.0
• 5.2–6.0
• 5.8–6.2
• 5.4–6.0

9. The pH optima for lactase is

• 1.0-2.0
• 5.4–6.0
• 5.0–7.0
• 5.8–6.2

10. The substrate for amylase is

• Cane sugar
• Starch
• Lactose
• Ribose

Score =

Correct answers:

Enzymes MCQs Parts => 1.. 2.. 3.. 4.. 5.. 6.. 7.. 8..

Genetics MCQs part 7

Solve Genetics Questions Online Test for 11th and 12th, Bachelor Studies,competitive Examination like CSIR NET, CBSE NEET, IELTS, GRE etc .

1. The term “factor” for gene was coined by

• William Bateson
• Johann Mendel
• Johannsen
• F. Griffith

2. Gregor Mendel was born in

• U.K
• Austria
• Russia
• Czechoslovakia

3. Mendel was a

• physiologist
• mathematician
• cytologist
• taxonomist

4. The first scientific study leading to the formulation of laws of inheritance was carried out by

• Darwin
• Hugo De Vries
• Lemarck
• Mendel

5. Under which title was Mendel’s work published in Natural History Society of Brunn?

• Mendel’s Laws of Inheritance
• Experiments in Plant Hybridization
• Experiment on Heredity and Variation
• Origin of Species

6. Mendel’s laws were first published in the year

• 1875
• 1890
• 1928
• 1866

7. The year 1900 A.D. is highly significant for geneticists due to

• chromosome theory of heredity
• discovery of genes
• rediscovery of Mendelism
• principle of linkage

8. The Mendelian principles of inheritance were rediscovered by

• Sutton and Boveri
• Hugo de Vries, Tschermark and Correns
• Lederberg and Tatum
• Morgan

9. Mendel’s work was rediscovered by three biologists from which of the following countries?

• Holland, France and England
• Holland, England and Austria
• Germany, France and England
• Austria, Holland and Germany

10. Mendel selected pea plant because of

• its short life span
• it produced many seeds and large flowers
• many contrasting characters
• all of these

Score =

Correct answers:

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Protein MCQs Part 9

1. For synthesis of prostaglandins, the essential fatty acids give rise to a fatty acid containing

• 12 carbon atoms
• 16 carbon atoms
• 20 carbon atoms
• 24 carbon atoms

2. All active prostaglandins have at least one double bond between positions

• 7 and 8
• 10 and 11
• 13 and 14
• 16 and 17

3. Normal range of plasma total phospholipids is

• 0.2–0.6 mmol per L
• 0.9–2.0 mmol per L
• 1.8–5.8 mmol per L
• 2.8–5.3 mmol per L

4. HDL2 have the density in the range of

• 1.006–1.019
• 1.019–1.032
• 1.032–1.063
• 1.063–1.125

5.β-lipoproteins have the density in the range of

• 0.95–1.006
• 1.006–1.019
• 1.019–1.063
• 1.063–1.125

6. IDL have the density in the range of

• 0.95–1.006
• 1.006–1.019
• 1.019–1.032
• 1.032–1.163

7. Aspirin inhibits the activity of the enzyme:

• Lipoxygenase
• Cyclooxygenase
• Phospholipae A1
• Phospholipase A2

8. A ’suicide enzyme’ is

• Cycloxygenase
• Lipooxygenase
• Phospholipase A1
• Phospholipase A2

9. In adipose tissue prostaglandins decrease

• Lipogenesis
• Lipolysis
• Gluconeogenesis
• Glycogenolysis

10. The optimal pH for the enzyme pepsin is

• 1.0–2.0
• 4.0–5.0
• 5.2–6.0
• 5.8–6.2

Score =

Correct answers:

Protein MCQs Parts => 1.. 2.. 3.. 4.. 5.. 6.. 7.. 8.. 9.. 10..

Molecular Genetics MCQs part 1

1. In a nucleotide, the nitrogen base is joined to the sugar molecule by

• Phosphodiester bond
• Glycosidic bond
• Hydrogen bond
• (a) & (b)

2. If a double stranded DNA has 20% Thymine, the percentage of Guanine in the DNA

• 30%
• 10%
• 90%
• 40%

3.If a DNA contains 1000 base pairs, what would be its length?

• 3400 Å
• 34000 Å
• 6800 Å
• 1000 Å

4. What is not True for DNA in prokaryotes

• present in the form of a compact structure called nucleoid
• the coils are maintained by non-histone basic proteins
• found in cytoplasm in a supercoiled condition
• packaged as nucleosomes along with histones

5. Pick the right difference between a DNA and RNA

• Sugar and phosphate
• sugar and purines
• purines and phosphate
• sugar and pyrimidines

6. In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R).
Assertion: In Griffith’s experiment mice were injected by a mixture of heat killed Smooth type bacteria and live Rough type bacteria. Some mice died of pneumonia and their blood contained both live Rough type bacteria and live Smooth type bacteria.
Reason: The dead Smooth type bacteria became alive and caused pneumonia. Griffith named it as transforming principle.

• If both Assertion and Reason are true and the reason is the correct explanation of the assertion, then mark (a)
• If both Assertion and Reason are true but the reason is not the correct explanation of the assertion, then mark (b)
• If Assertion is true but Reason are false, then mark (c)
• If both Assertion and Reason are false, then mark (d)

7. Hershey and Chase experiment proving DNA as the genetic material was based on the principle

• Transduction
• transformation
• transcription
• translation

8. A bacterial colony containing DNA made up of 100% N15 nitrogen bases is allowed to replicate in a medium containing N14 bases. After one round of replication the result would be

• All individuals will be identical to parents
• All individuals will be hybrids
• Only 50% individuals would be hybrids
• All individuals would have DNA made up of 100% N¹⁴

9. Teminism is

• a central dogma reverse
• a central dogma of molecular biology
• a circular flow of hereditary material
• an effect of cytoplasm on functioning of DNA

10. Cistron is

• The coding sequence of DNA
• The functional unit of DNA molecule that codes for a particular gene product
• Intervening non coding sequence of DNA
• The sequences which are removed during RNA splicing

Score =

Correct answers:

Molecular Genetics MCQs Parts => 1..

Genetics MCQs part 6

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Cell Cycle MCQs Part 3

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Animal Biotechnology MCQs Part 7

1. Which of the following is an example of cell devoid of nuclear membrane and mitochondria ?

• Bacterial cell
• Sperm
• Protist
• Sponge cell

2. Animal cell differs from plant cells in possessing __________

• plastid
• golgi body
• vacuole
• centrosome

Cell Cycle MCQs part 2

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Cell Cycle MCQs Parts => 1.. 2.. 3..