Animal Biotechnology Questions Online Test 12

1. A knockout mouse is so named because _____________

• it contains aggression genes
• it contains multiple copies of a human gene
• it contains an activated human gene
• none of the above

2. The first patent for a transgenic organism was awarded in 1988. Which organism was patented?

• A yeast used in industrial processes
• A bacterium able to metabolize components of crude oil
• A mouse that manufactures human protein in its milk
• Life forms cannot be patented

Animal Biotechnology Questions Online Test 11

1. Bioethcs is related to ________________

• Preventing biopiracy
• Regulation of unethical activities likegene cloning in animals
• Preventing theft of living materials
• Moral guidance to the problems in biology

2. Pasteur chose the Latin root word for "virus" meaning ____________ Answer: C

• extremely small
• non-living
• poison
• particle

Plant Biotechnology MCQs Part 8

1. ________ fixes molecular nitrogen in the roots of leguminous plant.

• Rhizobium species
• Bacillus species
• Clostridium species
• Staphylococcus species

2. Rizobium is a Gram ______ bacterium

• negative rod
• negative spherical
• positive rod
• positive spherical

3. Nodule bacteria were isolated by _______.

• Watson
• Crick
• Nitesh
• Beijernck

4. Nodule bacteria were isolated by Beijernck in ______.

• 1988
• 1888
• 1788
• 1688

5. Conversion of molecular nitrogen into ammonia by free living organism is called __________ nitrogen fixation.

• atmospheric
• industrial
• nonsymbiotic
• symbiotic

6. Conversion of molecular nitrogen into ammonia by organism in the root itself is called __________ nitrogen fixation.

• atmospheric
• industrial
• nonsymbiotic
• symbiotic

7. Non symbiotic nitrogen fixers are _______.

• bacteria
• virus
• fungi
• nematodes

8. Non symbiotic nitrogen fixing bacterium is _______.

• Anabena
• Azomonas
• Rhizobium
• Klebsiella

9. Non symbiotic nitrogen fixing cyanobacterium is _______.

• Anabena
• Azomonas
• Rhizobium
• Klebsiella

10. Heterocyst is the structure present in _______.

• Anabena
• Azomonas
• Rhizobium
• Azospirillum

Score =

Correct answers:

Plant Biotechnology MCQs Parts => 1.. 2.. 3.. 4.. 5.. 6.. 7.. 8.. 9..

Plant Biotechnology MCQs Parts => 1.. 2.. 3.. 4.. 5.. 6.. 7.. 8.. 9..

Animal Biotechnology MCQs Part 10

1. Which statement is NOT true about a retrovirus?

• It may cause cancer or AIDS
• It contains reverse transcriptase
• It is known to cause diseases only in animals, not in humans
• It has the capacity to integrate cDNA into the host DNA of the cell it infects

2. Blood cells that transport oxygen within the body are the _____________ .

• plasma
• erythrocytes
• platelets
• leukocytes

Animal Biotechnology MCQs Part 9

1. Introduction of foreign genes for improving genotype is ______________

• Tissue culture
• Immunisation
• Biotechnology
• Genetic engineering

2. Where do the female gonads (paired ovaries) lie?

• Pelvic cavity
• Thoracic cavity
• abdominal
• Scrotal sacs

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..

Animal Biotechnology MCQs Part 8

1. Immediately after ovulation, the mammalian egg is covered by a membrane known as _____

• chorion
• zona pellucida
• corona radiata
• vitelline membrane

2. Each centriole in the mature sperm consist of _______________

• 2 central and 9 peripheral fibrils
• 3 central and 6 peripheral fibils
• 4 central and 5 peripheral fibrils
• 9 central and 2 peripheral fibrils

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..

Enzymes MCQs Part 6

1. The normal serum alkaline phosphatase activity ranges from

• 1.0–5.0 KA units/100 ml
• 5.0–13.0 KA units/100 ml
• 0.8–2.3 KA units/100 ml
• 13.0–21.0 KA units/100 ml

2. In early stages of myocardial ischemia the most sensitive indicator is the measurement of the activity of

• CPK
• SGPT
• SGOT
• LDH

3. Serum acid phosphatase level increases in

• Metastatic carcinoma of prostate
• Myocardial infarction
• Wilson’s disease
• Liver diseases

4. Serum alkaline phosphatase level increases in

• Hypothyroidism
• Carcinoma of prostate
• Hyperparathyroidism
• Myocardial ischemia

5. Serum lipase level increases in

• Paget’s disease
• Gaucher’s disease
• Acute pancreatitis
• Diabetes mellitus

6. Serum ferroxidase level decreases in

• Gaucher’s disease
• Cirrhosis of liver
• Acute pancreatitis
• Wilson’s disease

7. The isoenzymes LDH5 is elevated in

• Myocardial infarction
• Peptic ulcer
• Liver disease
• Infectious diseases

8. On the third day of onset of acute myocardial infarction the enzyme elevated is

• Serum AST
• Serum CK
• Serum LDH
• Serum ALT

9. LDH1 and LDH2 are elevated in

• Myocardial infarction
• Liver disease
• Kidney disease
• Brain disease

10. The CK isoenzymes present in cardiac muscle is

• BB and MB
• MM and MB
• BB only
• MB only

Score =

Correct answers:

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

Enzymes MCQs Part 5

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Cell Cycle MCQs Part 3

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Cell Cycle MCQs Parts => 1.. 2.. 3.. 4..

Protein MCQs Part 8

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

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