Question # 1

The sites where nerve impulse is transmitted from the nerve endings to the skeleton muscle cell membranes are the:

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Neucromuscular junctions

Sarcomeres

Myofilaments

Z discs

Alzhelimer's disease is

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Physical illness

Mental illness

Ronal illness

Pulmonary illness

Which one of the following is not endotherm.

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Bird

Amphibian

Mammal

Flying insect

In test cross, heterozygous produces.

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All round

50,50

All wrinkle

None of these

When expression of a biological character is observed in variable intensity, it is due to the efect of:

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Multiple alleles

Codominance

Epitasis

Polygenic inheritance

Osteomalacia includes a number of disorders in which bones receive inadequate

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Water

Oxygen

Mineral

Blood

Parathyroid hormone acts to ensure that

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Calcium levels in the blood never drop too low

Sodium levels in urine are constant

Potassium levels in the blood do not escalate

The concentration of water in the blood is sufficient

Germinating pollen grain is a rich source of

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Gibberellins

Auxins

Cytokinin

Ethene

Rapid aging and less resistance to environmental stress and diseases are limitations of.

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Parthenocarpy

Cloning

Phototropism

Verbalization

Sunkens stomata are found in which of the following group of plants.

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Hydrophytes

xerophytes

Bryophytes

Mesophytes

The vertebral column of human consists of vertebrae.

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31

32

33

34

Transfer of genetic material from one cell to other that can alter the genetic make up of recipient cell is called.

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Transcription

Replication

Translation

Transformation

Which is not a biotechnology product.

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Hepatitis B

Tissue plasminogen activator

Human growth hormone

Hemophilia factor I

A form of air pollution in which airbone acids produced by electric utility plants and other sources fall to Earth in distant regions is

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Acid rain

Basic rain

Heavy rain

Drizzling

Luteinizing hormone induces.

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Flowering

Vernalization

Ovulation

Menopause

What are the penotypes of the parent of a colour-blind son and non-carries daughter with normal colour vision?

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FATHER MOTHER

Carrier Normal

FATHER MOTHER

Colour blind Carrier

FATHER MOTHER

Normal Carrier

FATHER MOTHER

Normal Colour- blind

The hormone which inhibits root growth is.

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auxins

gibberellins

Absclsic acid

Cytokinins

What are significant happening of meiosis.

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Crossing over

Random assortment of chromosome

Linkage

Crossing over and random assortment of chromosomes

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