MDCAT-UHS Biology Unit-11

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This Test Include;
MDCAT-UHS Biology Unit-5
Topic: BIOTECHNOLOGY EVOLUTION
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Question#1: Which technology facilitates the production of DNA molecule by combining sequence of DNA from two different organisms?

1 point

Gene therapy

Recombinant DNA technology

PCR

Germ line gene therapy

Clear selection

Question#2: In genetic engineering chimaeric DNA is:

1 point

An enzyme that links with DNA

A plasmid that contains foreign DNA

A viral DNA that infects bacteria

A DNA of fungal cell

Clear selection

Question#:3: Restriction endonucleases are natural enzymes of _______ which they use for their protection against _______.

1 point

Virus, Virus

Virus, Bacteria

Bacteria, Bacteria

Bacteria, Virus

Clear selection

Question#4: Enzymes required for Recombinant DNA technology are: I- Helicase II- Reverse transcriptase III- Endonucleases IV- Ligase

1 point

I only

II, III, IV only

I, II, IV only

I, II, III, IV only

Clear selection

Question#5: Commonly used restriction endonuclease is:

1 point

pSC101

pBR322

EcoR1

TTAA

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Question#6: Which of the following is a palindromic sequence?

1 point

GAATTC

TACGGA

GCCATT

TAGACC

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Question#7: Plasmids are:

1 point

Single stranded linear DNA

Double stranded circular DNA

Double stranded linear DNA

Single stranded circular DNA

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Question#8: Source of reverse transcriptase:

1 point

Viruses

Yeasts

Thermus aquaticus

All living cells

Clear selection

Question#9: Which of the following virus can be used to transfer chimaeric DNA into bacterial cell?

1 point

Lambda phage

HIV

T4 phage

HCV

Clear selection

Question#10: What is the function of the polymerase chain reaction in biotechnology?

1 point

DNA fragment separation

Amplification of DNA

Cutting of DNA into fragments

Linking two different DNA

Clear selection

Question#11: During PCR, primer always attaches to __________ end of DNA.

1 point

1’

2’

Clear selection

Question#12: Following is not a requirement of PCR:

1 point

dNTPs

Primases

DNA polymerase

Thermocycler

Clear selection

Question#13: First step of PCR is:

1 point

DNA replication

Denaturation of DNA

Addition of primer

Extension or continuation

Clear selection

Question#14: The protein expressed by gene in coronary artery angioplasty:

1 point

Vascular endothelial growth inhibitor

Vascular epithelial growth factorc

Vascular endothelial growth promoter

Vascular endothelial growth factor

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Question#15: It is true about PCR:

1 point

It is true about PCR:

Multiple copies obtained

Expensive process

Protein product obtained

Clear selection

Question#16: All of the following diseases can be treated with in vivo gene therapy except:

1 point

Haemophilia

Familial Hypercholesterolemia

Diabetes

AIDS

Clear selection

Question#17: Familial hypercholesterolemia results due to absence of cholesterol receptors in cells of:

1 point

Lungs

Brain

Liver

Intestine

Clear selection

Question#18: Which one of the following biotechnology product is used in heart patients?

1 point

Tissue Plasminogen activator

Hemophilia factor IX

Bovine growth hormone

Lovastatin

Clear selection

Question#19: In Vortex method, tiny holes in cell membrane are produced by:

1 point

Electric current

Silicon carbide

Particle gun

Cesium chloride

Clear selection

Question#20: Urine is better vehicle to get biotechnological products because:

1 point

All animals urinate but milk is produced by females only

Females produce milk before maturity

Animals start urinate after puberty

It is easier to extract proteins from milk than from urine

Clear selection

Question#21: What is the risk associated with the use of retroviruses in gene therapy?

1 point

Haemophilia

Tumor production

Respiratory failure

Muscle sprain

Clear selection

Question#22: Which of the following is used to develop transgenic animals?

1 point

Sanger’s dideoxy method

Particle gun

Gene sequencing

Microinjections

Clear selection

Question#23: A genome is a full set of genes of a/an:

1 point

Population

Individual

Community

Species

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Question#24: Separation of DNA fragments according to their size and charge is done in all except:

1 point

Gel electrophoresis

DNA analysis

Polymerase chain reaction

DNA fingerprinting

Clear selection

Question#25: What was the perception of Darwin about unity of life?

1 point

All organisms descend from a common ancestor

All organisms are created specially by a divine force

All organisms share a common biological composition

All organisms arise from non–living things

Clear selection

Question#26: Which one is related to natural selection?

1 point

More people → more resources → no competition

More people → less resources → more competition

Less people → more resources → no competition

Less people → less resources → no competition

Clear selection

Question#27: In Darwin’s hypothetical evolutionary tree, tips of living twigs represent:

1 point

Ancestral History

Current Biodiversity

Common skills

Fossils

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Question#28: According to Darwin, finches found on Galapagos island had distinct characteristics due to:

1 point

Geographical isolation

Developmental anomaly

Special creation

More competition on island

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Question#29: The smallest biological unit that can evolve over time:

1 point

A species

A population

An individual

An ecosystem

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Question#30: Natural selection can operate on:

1 point

Variations

Non-heritable variations

Heritable variations

All A, B, C

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Question#31: Product of evolution is:

1 point

Ecosystem

Biome

Community

Species

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Question#32: Series of changes in the genetic composition of a population over time is called:

1 point

Revolution

Evolution

Population genetics

Succession

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Question#33: Neo-Darwinism is reconciliation of:

1 point

Larmarckism & Darwinism

Lamarckism & Mendelism

Mendelism & Darwinism

Uniformitarianism & Catastrophism

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Question#34: Darwin’s theory of evolution was mainly based on the evidences from:

1 point

Biogeography & fossil record

Biogeography & population genetics

Palaeontology & taxonomy

Fossil record & comparative anatomy

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Question#35: All of the following are points of theory of natural selection except:

1 point

Descent with modification

Survival of the fittest

Struggle for existence

Inheritance of acquired characters

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Question#36: According to Darwin, the prime cause of evolution is:

1 point

Overproduction

Survival of the fittest

Struggle for existence

Natural selection

Clear selection

Question#37: In a population with two alleles for a particular locus, B and b, the allele frequency of B is 0.7. What would be the frequency of heterozygous if the population is in Hardy-Weinberg equilibrium?

1 point

0.36

0.16

0.42

0.24

Clear selection

Question#38: If p + q = 1 then what will be frequency of q?

1 point

1–p

1–q

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Question#39: According to Hardy-Weinberg theorem, all of the following affect allele frequency except:

1 point

Mutation

Random mating

Genetic drift

Selection

Clear selection

Question#40:

1 point

Option 1

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