Question # 1

Oxygen released during photosynthesis comes from.

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Nitrates

Carbon di oxide

Water

Glucose

Which one serves to build macromolecules.

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ATP

Glucose

Starch

Karatin

The common name of Allium cepa is

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Piyaz

Bathu

Amaltas

Chana

An enzyme with its co enzyme or prosthetic removed is designated as

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Activator

Co enzyme

Apo enzyme

Holoenzyme

Plasmid is

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Essential for bacterial growth and metabolism

Drug resistant having disease and insect resistant gene

Essential for bacterial growth only

All of above

All have open blood circulatory system except.

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Snail

Calms

Insects

Octopus

Photosynthetic pigments organized into clusters are called.

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Tkoids

Photosynthesis

Stroma

Granna

Human tissue contains about 20% water in.

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Kidney

Bone cells

skin cells

Brain cells

Why hemoglobin is 98% saturated, the oxygen content per 100 ml of blood is.

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19.6 ml

18.6 ml

17.6 ml

16.6 ml

The membrane of vacuole is named as

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Apoplast

Symplast

Tonoplast

None

The largest invertebrate animal is.

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dog fish

Glant squid

Octopus

Cuttle fish

Inheritance of acquired characteristics was proposed by

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Darwin

Mendel

Lamarck

Mathus

A sequence of three nucleotides in mRNA is called.

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Cistron

Codon

Anticodon

Templet

End product of hemoglobin breakdown is.

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Uric acid

Urea

Bilirubin

Ammonia

The hyphae of fungi are

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Phototactic

Chemotropic

Geotropic

Chemotactic

Environmental factors causing abnormal development are grouped together as.

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Toxins

Carcinogens

Teratogens

Mutagens

Cancer is caused mainly by mutation in.

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somatic cells

Sex cells

Malignant cells

Reproductive cells

Myoglobin has a special function in muscle tissue:

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It breaks down glycogen

It is a contractile protein

It holds a reserve supply of oxygen in the muscle

None of these

The kinetochore fibres of spindle attach to the kinetochore region of chromosome and align them at the equator of the spindle forming

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Equatorial plate

Metaphase plate

Central plate

Both a & b

Opening of flower bud follows.

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Photonasty

Hyponasty

Epinasty

Haptonasty

The earliest form of muscles to evolved is.

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Cardiac muscle

skeleton muscle

Smooth muscle

Involuntary muscle

Each A band has a lighter stripe in its mid section called.

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A zone

H zone

M - Line

Z - Line

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