Question # 1

Insulin is a/an:

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Osmotic Protein

Transport Protein

Regulatory Protein

Catalytic Protein

Pick up the correct statement about the following figure:

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2.Nucleolus, 4.Golgi apparatus, 10.cytoplasm, 7.Mitochondria

2.Nucleolus, 7.cell membrane, 9.cytoplasm, 7.Mitochondria

2.Nucleolus, 4.Golgi apparatus, 5.cytoplasm, 7.Mitochondria

2.Nucleolus, 4.Golgi apparatus, 10.cytoplasm, 7.Centriole

In hydrospheric ecosystem the exchange material and transfer of energy takes place.

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Within water and air

Within water and land

Within water

Within land and air

How many nitrogen atoms are found in lecithin

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1

2

3

4

An organelle having no nucleic acid in its chemical composition is

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Lysosomes

Ribosomes

Centriole

Mitochondria

Body of _____ consists of segments called proglottids which contains mainly sex organ

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Planaria

Fasciola

Ascaris

Tapeworm

______ lichens are the examples of foliose lichens

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Dermatocarpon

Permellia

Both a and b

None of above

It is community relay

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Niche

Evolution

Speciation

Succession

Viral core always contain __ among the following

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DNA

RNA

Both A and B

Any of A or B

Phylum of asymmetrical animals is

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Nematoda

Platyhelminthes

Cnidaria

Porifera

Climax in zerosere is the establishment fo

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Woody forest

Grasses

Herbs

Shrubs

The animals which feed on grasses are called:

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Grassers

Browsers

Grazers

Grazophytes

The inhibitor having structural similarity with substrate is

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Irreversible inhibitor

Reversible inhibitor

Competitive inhibitor

Noncompetitive inhibitor

The study of different communities to environment is called

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Autecology

Synecology

Microbiology

Ornithology

If substrate concentration is unlimited, rate of enzyme action becomes

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Inversely proportional to enzyme concentration

Directly proportional to enzyme concentration

Directly proportional to substrate Concentration

Inversely proportional to substrate

Concentration

How may gene pairs contribute to the wheat grain colour?

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one

two

three

four

The semicircular channels and system of tubes found in cytoplasm are known as

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Ribosomes

Glyoxisomes

E.R

Vacuoles

Cloud cover is reduced due to

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Reforestation

Afforestration

Deforestration

Air pollution

The oxygen concentration in the air is maintained by the green plants which release it during

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Fermentation

Respiration

Photosynthesis

Chemosynthesis

Radial symmetry is present in

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Adults of annelida

Adults of echinodermata

Adults of Cnidaria

Both B and C

Lumen of the cristae is the part of

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Inner membrane

Outer membrane

Inner compartment

Outer compartment

A short food chain of two or three links supports a community:

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Efficiently

More efficiently

Inefficiently

Less efficiently

Features of most complex animals are

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Triploblastic with true coelom

Triploblastic with pseudocoelom

Triploblastic with bilateral symmetry

Triploblastic with radial symmetry

The two linked genes A and B with a 30% recombination frequency must be

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15 units apart

30 units apart

60 units apart

90 units apart

______ incorporate gaseous nitrogen from air into organic nitrogen containing compounds

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Nitrogen fixing bacteria

Nitrogen degrading bacteria

Both A and B

None of above

_____ is a good example of polymorphism

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Hydra

Obelia

Starfish

Euplectella

The amount of energy left after plants have met their respiratory needs is net primary production, which shows up as plant:

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Respiration

Photosynthesis

Biomass

Reserve

Which of the following is a common feature of all viruses

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DNA replication in cytoplasm

RNA synthesis in nucleus

Protein synthesis in cytoplasm

Reverse transcription in cytoplasm

An activated enzyme consisting of polypeptide and cofactor is called as

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Activator

Apoenzyme

Holoenzyme

Coenzyme

Which can't increase their weight in inorganic medium

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Producer

Consumer

Decomposer

Both b & c

Biosphere is spread over the surface of plant earth, extending upto:

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8 to 10 km

5 to 6 km

10 to 20 km

8 to 16 km

Which of the following traist is transmitted directly from an affected to only its sons?

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autosomal

X-linked

Y-linked

X and Y linked

How many number of autosomal chromosome pairs are present in human

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22

33

44

46

Which of the following kind of inhibitors don’t compete for active site of enzyme

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Irreversible competitive

Reversible competitive

Reversible non competitive

Both b and c

Darwin published " The Origin of Species" in

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1840

1844

1858

1859

The biotic components of the ecosystem are the

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Producers

Consumers

Producers,consumers and the decomposers

Decomposers

We are reducing natural 'carbon dioxide's

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Sources

Sinks

Both

None

The organisms of same species live in a same place is called

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Community

Population

Consumers

All of these

Which of the following is an example of primary succession

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Foliage stage

Moss stage

Hydrosere and xerosere

None of these

In tertiary structure, presence of hydrophilic amino acids at the surface of proteins and hydrophobic amino acids buried inside, indicate

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Nature of bonding

Function of protein

Nature of medium

Shape of protein

Life on earth is affected by both

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Weather and water

Weather and climate

Climate and water

Water and air

What is trampling

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Eating grasses to roots

Nipping leaves

Overgrazing

Putting pressure on soil to make it compact

Degenerated testes are present in abdomen in which of these cases

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Down's syndrome

Klinefelter's sysndrome

Turner's syndrome

Testicular ferminization

The processes that have transformed life an earth form its earliest forms to the vast diversity that we observe today, are collectively referred as :

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Evolution

Succession

Revolution

All of above

All chromosomes other than sex chromosomes are called

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Linked Chromosomes

Autosomes

Autophagosommes

Dictyosomes

Hemophilia is a ________ disease

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Heritable

Genetic

Nutritional deficiency

Both a and b

Oxides of nitrogen are produced by burning of

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Carbonate

Leaded patrol

Fossil fuels

All of above

Coniferous forests of high altitude are known as:

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tundra

Boreal

Alpine

Arctic

Genome of the acellular particle mainly comprised of

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Protein

Sugars

Lipid

Nucleic acid

A biotic components includes the components like:

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Air, water, and animals

Air, soil and plants

Air, water and soil,

air, soil, and, animals

Archaeobacteria could tolerate temperatures up to :

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140°C

120°C

95°C

70°C

Forest ecosystem is subdivided into ____ type of forests.

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Two

Four

Five

Three

A dominant plant of temperate deciduous forests is the :

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Euphorbia

Taxus baccata

cactus

Acacia

Secondary structure is the ultimate structural level of which of the following proteins?

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Trypsin

Insulin

Keratin

Glucose

The succession started on bare area is called as

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Primary succession

Secondary succession

Tertiary succession

Quartnary succession

In an ecosystem sheep and rabbits are examples of

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Producers

Predators

Grazers

Saprophytes

Succinic acid differs from malonic acid by

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OH

CH₂

CH₃

CHO

The first person who argued from evidence that species were not created in their present form rather they had evolved from ancestral species was

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Aristotle

Lamarck

Darwin

Mendel

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

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Progression

Sequence

Succession

String

Which of the following helps in recognition of substrate

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Active site

Catalytic site

Binding site

All

Ozone is present at about ________ km above earth

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5 -10

10 - 20

10 - 40

10 - 50

Prosthetic groups are

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Radicals

Inorganic molecules

Organic molecules

Metal ions

Passage through the pores in nuclear envelope is restricted preliminary to

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Proteins, RNA and protein-RNA complexes

Lipids and Glycolipids

DNA and RNA

Glycoproteins

Which of the following has chitinous cuticle in the exoskeleton

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Arthropoda

Porifera

Echinodermata

Annelida

The soil of the deciduous forest is:

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Yellow

Grayish brown

Grayish black

Black

Sharp rise in LH output due to estrogens is an example of

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Negative feedback

Positive feedback

Primary feedback

None

Joseph Grinnell an American scientist was:

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Paleontologist

Embryologist

Ornithologist

All of these

Due to the trampling of the soil layer by the hooves of grazing animals the rain water will:

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Penetrate deep into the soil

Not penetrate this soil

Stop on the soil

Do not affect this layer of the soil

The green photosynthetic plants, which capture and bring light energy into the ecosystem are:

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Decomposers

Consumers

Producers

Scanvengers

Mad cow infection is caused by ____

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Viroid

Virion

Prion

Bacteria

The receptors which are 27 times more abundant than cold receptors

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Pressure receptors

Pain receptors

Heat receptors

Light receptors

Flavin adenine dinucleotide is a

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Prosthetic group

Activator

Coenzyme

Inhibitor

The nutrient cycles are also called as

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Biogeochemical cycles

Biochemical cycles

Geo-cycles

All of above

Which of the following cross is carried to check the genotype of an individual showing a dominant phenotype

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Check cross

Test Cross

Criss cross

Self cross

Which of the following is a distinguishing character of sponges

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Tentacles

Ceoleteron

Choanocytes

Calcareous skeleton

HIV attaches on cell membrane of T cell at _____ receptor site

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Cd2

Cd4

Cd8

Gp120

The Organic biomolecule which is widespread in bacterial animal and plant cells is

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Wax

Glucose

Acyl glycerol

Phospholipids

In coniferous alpine and boreal forest the temperature ranges from:

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0°C to 10°C

Below freezing point up to 10°C

Below freezing point up to 15°C

0°C to 15°C

Omnivores are described by how many trophic levels

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Any 2

Any 3

Any 1

Primary & any higher

Fungi and bacteria are:

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Producers

Consumers

Decomposers

Predators

In case of sickle cell anemia, in place of glutamic acid, _________ is found

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Histidine

Valine

Proline

Leucine