Question # 1

In a nucleosome, DNA is wrapped around protein named.

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Insulin

Interferon

Histone

Haemoglobin

Urine is temporarily stored in which of these until it is released from body.

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Kidney

Ureter

Urinary bladder

Urethra

Bones which enclose brain are called.

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Cranial bones

Cervical bones.

Vertebrae

None of the above

Functions of effector called

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Stimulus

Impulse

Response

Axons

ABO blood system is controlled by a gene I The number of alleles I.The number of alleles of this gene are:

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two

three

five

many

Water , soil, air, temperature, wind and sunlight are example of:

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Biotic factors

Biomass

Environment

Abiotic factors

The number of axons present in sensory neuron is:

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one

two

three

many

Which organism is used in fermentation for the preparation of glycerol.

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Aspergillus

Saccharomyces

Bacillus

Streptoccocus

Medicines which induce sedation by reducing irretability and excitement are called:

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Analgesics

Antibiotics

Sedative

Vaccines

In 1927,................ developed the concept of ecological pyramids.

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Kelvin

Lamark

Charles Elton

Charles Darwin

The first step of genetic engineering is:

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Growth of the genetically modified organism

Transfer of the recombinant DNA into the host organism

Isolation of the gene of interest

Insertion of gene into a vector.

How many genotypes are possible for the allele ''A'' and ''a'' ?

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two

three

four

seven

Stomata are present in:

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Phloem

Xylem

Endodermis

Epidermis

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