Question # 1

In 1970 Hamilton D.Smith at Johns Hopkins University isolated the first

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DNA polymerase

DNA ligase

Diastase

Restriction enzyme

Cortisol brings about an increase in blood glucose level mainly by its production from protein and by

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Insulin

Glucagons

Oestrogen

Progesterone

The total aggregate of genes in a population at any one time is called the populations gene

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Puddle

Lake

Pool

Pond

Saliva and urine are used for evaporative cooling by

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Bat

Dogs

Birds

Seals

A change in the community structure of an ecosystem over a period of time is:

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Ecological niche

Ecological mutation

Succession

Genetic Drift

Primer for PCR contains about.

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5 bases

10-20 bases

30 bases

40 bases

Menstrual cycle is called.

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Menopause

emotinal stress

Menstruation

Malnourishment effect of cycle.

Which one the following structures of kidney is involved in the production of concentrated rein.

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Glomerulus

Juxtamedullary nephron

Cortical nephron

Vasa recta

A collection of bacterial and phage viruses clones containing a particular segment of DNA from the source cell is called.

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Expressing system

Genome

Genomic library

Recombinant DNA

Which one of the given is non sense codon.

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AUG

ACU

GAU

UAA

Causative agent of genital herpes is a.

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Virus

Bacteria

fungi

Protozoan

About 500 ml water is needed to excrete 1g of ammonia

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Hydrogen

Oxygen

Nitrogen

Helium

The clavicle connects scapula with.

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Skull

Sternum

Tibia

Femur

The phase of meiosis during which nuclei disappear int he cell is called.

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Pachytene

Leptotene

Zygotene

Diplotene

Hemophilia is

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X linked dominant trait

X linked recessive trait

Sex influenced trait

Sex limited trait

The fusion of four posterior vertebrae present in the pelvic region from.

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Sacrum

Lumber

coccys

Chest cage

Human appendix, coccyx and nictiating membrane of the eye are:

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Vestigical organs

Homologous organs

Analogous organs

Embroyonic organs

The removal of sebum on the skin is for

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Nutrition

Excretion

Protection

Thermoregulation

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