Question # 1

The phage is called temperate when it causes

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Virulence

Lysis

Lysogeny

Bursting of host cell

Pyramid always starts at

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T₁

T₂

T₃

T₄

Tiny shaped structure located deep between cerebral hemispheres

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Thyroid gland

Pitutary gland

Pineal Gland

Corpus callosum

Which type of hepatitis is called serum hepatitis

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Hepatitis A

Hepatitis B

Hepatitis C

Hepatitis D

The abiotic components are also termed as

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Chemical factors

Physical factors

Biological factors

A and B

Which of the following is not true about abiotic components

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Water

Temperature

Consumers

Gravity

Allele for whiteness in Drosophila is :

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Recessive

Codominant

Dominant

Partially Dominant

Several bacteria in soil are able to oxidize ammonia or ammonium ions, this oxidation is known as:

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Ammonification

Nitrification

Denitrification

Amino-oxidation

Optimum pH of all human enzymes is

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Variable

Same

Acidic

Alkaline

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

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Histidine

Valine

Proline

Leucine

It is community relay

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Niche

Evolution

Speciation

Succession

If non protein part is covalently bonded to the protein part of enzyme, it is known as

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Coenzyme

Prosthetic group

Activator

Cofactor

Which of the following part of virus does not enter into host cell

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Envelope

Spikes

Both

Capsid

Mycorrhiza is an association of

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Algae with roots of higher plants

Bryophytes with roots of higher plants

Fungi with roots of higher plants

Bacteria with roots of higher plants

Which is incorrect about resting membrane potential

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Na+ ions are ten folds higher outside

2 Na+ move out for 3 K+ move in

K+ ions are twenty folds higher inside

Some k+ ions leak out

X and Y linked genes are also called as

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Sex genes

Dominant genes

Autosomal genes

Pseudoautosomal genes

The study of relationship of an organisms to their environment is known is

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Biology

Ecology

Zoology

Mycology

Sickle cell mutation affects

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One beta chain

Both beta chains

Only alpha chain

None of the alpha or beta chain

A change in one or more bases of DNA, which results in the formation of an abnormal protein is

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Moulting

Transformation

Mutation

Fission

Root Nodules are the example of

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Predation

Symbiosis

Parasitism

None of above

The term niche in ecolgy was first proposed by:

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Charles Eton

Ernst Haeckel

Joseph Grinnell

Carolus Linnaeus

Benefits brings about by both of the organisms is called

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Mutualism

Symbiosis

Anabolism

catabolism

About 20 years ago what was the rate at which human population was increasing

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1%

2%

3%

5%

______ 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

All populations within an ecosystem are known as a:

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Population

Community

Species

Clan

Rh factor or antigen was first studied in :

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Man

Owl

Monkey

Fish

Two main types of environment factors are:

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Geotropism and phototropism

Abiotic and biotic

Land aquatic

None of these

The enzyme that works best at intermediate pH is

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Pepsin

Chymotrypsin

Sucrase

Pancreatic lipase

All food chains and food webs begin from

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Consumers

Green plants

Fungi and bryophytes

Dead organic matter

What will be the risk of heamophilia in sons if father is haemophilic and mother is normal

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0%

20%

25%

50%

In lithospheric ecosystem the availability of water is:

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Unlimited

UniForm

Limited

Zero

Color blindness, haemophilia and gout form linkage group onj

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Chromosome 9

Chromosome 19

x-chromosome

y-chromosome

Which is responsible for hyperpolarization across membrane

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Disturbing of charge

Late closing of K+ gates

Influx of Na+

Efflux of Na+

Monoculture is

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One organism

A lab culture

A pure culture

Both b and c

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

Insect and flower relationship is the example of

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Mutualism

Commensalism

Parasitism

All of above

Which of the following is always an intracellular parasite

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Zooparasite

Viral parasite

Phyto parasite

Microbial parasite

The specificity of enzymes is due to their

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High molecular weight

pH sensitivity

Hydrogen bonding

Surface configuration

Biosphere is spread out over the surface of planet earth extending about:

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2/4 km

4/6 km

6/8 km

8/10 km

All living organisms supported by biosphere are called

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Biotic components

Abiotic components

Autecology

Synecology

The neuron which has central and peripheral branches is

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Sensory neuron

Motor neuron

Associative neuron

Relay neuron

Primary succession that starts on a dry soil or rock is called:

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Hydrosere

Derosere

Xerosere

Aquasere

Flavin adenine dinucleotide is a

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Prosthetic group

Activator

Coenzyme

Inhibitor

The study of relationship of an organism to their environment is knows as:

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biology

ecology

zoology

mycology

According to endosymbiont hypothesis the aerobic bacteria developed into

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Lysosomes

Mitachondria

Chloroplast

Nucleus

In 1917, Joseph Grinnell an American ornithologist first proposed the term niche in:

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Taxonomy

Neurology

Ecology

Embryology

Which is not a seral stage

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Climax forest

Moss

Shrub

None

The concept that all living things came into existence in their present forms especially created by Nature is called as

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Theory of special creation

Theory of special selection

Theory of natural creation

Theory of natural selection

In this type of relationship only one organism benefits from the relationship. The other is not affected at all

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Mutualism

Commensalism

Parasitism

All of above

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

Which region of the nucleolus has DNA?

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Central fibrillar region

Central granular region

Peripheral granular region

Peripheral fibrillar region

Which can't increase their weight in inorganic medium

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Producer

Consumer

Decomposer

Both b & c

Which of the following is correct option

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Nucleoside does not contain phosphate

Nucleotide has three sub-units

Ester bond is present in acylglycerols

All

Pick out the phospholipid from the following

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Phosphatidylserine

Lecithin

Phosphatidylcholine

All

Which one of a endoparasite of organisms

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Fungi causes dandruff in hair

Tapworms

Earthworms

Lices

Three principal stages of nitrogen cycle are:

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Ammonification, Nitrification, and Assimilation

Ammonification, Acidification, and Assilimlation

Esterification, Nitrification, and Assimilation

Ammonification, Nitrification, and Denitrification

Retroviruses cause tumors in

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Rodents

Fowls

Cats

All

Consumers

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Are primarily animals that obtain energy directly or indirectly from producers

Are primarily bacterial organisms that obtain energy directly or indirectly from producers

Are secondary animals that obtain energy directly or indirectly from producers

Are secondary plants that obtain energy directly or indirectly from producers

The next to simplest amino acid is

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Alanine

Glycine

Serine

Glutamine

The relationship between insects and flowering plants is the example of:

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Commensalism

Mutualism

Predation

Parasitism

It is the study of the relationship of animals (organisms) to their environment

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Ecology

Ecosystem

Physiology

Mycology

Which is irrelevant?

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Genome to virus structure

Capsomeres to Capsid

Tumors to retroviruses

Envelope to all viruses

When a haemophilic carrier woman marries a normal man, who among her offspring may be affected

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all her children

all her daughter

half of her daughter

half of her sons

Algae are

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Microproducers

Macroproducers

Both A and B

None of above

In rats whose adrenal medulla has been removed surgically, the ability to with stand any stress situation such as cold

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Is Enhanced

Is diminished

Remains unaffected

Is finished

Non-neural cells which encapsule the axon of neurons are

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Microglial

Microbodies

Schwann cells

Companion cells

Succession starting in pond is called

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Hydrosere

Xerosere

Pioneers

None of these

Succinic acid is the ____ of succinic dehydrogenase which undergoes____

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Active site, reduction

Prosthetic group, reduction

Substrate, oxidation

Substrate, reduction

The living organisms, which cannot prepare their own food but obtain ready-made food form others, are:

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primary and secondary consumers

secondary and tertiaryconsumers

only primary consumers

consumers

Lices and mosquitoes are the examples of

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Endoparasite

Ectoparasite

Outer parasite

All of above

Biotic components includes all the

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Nonliving components

Living components

Nonliving and living both

None of these

Insulin receptors are present in

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Cytoplasm of muscle cells

Cell membrane of liver cells

Cell membrane of muscles and liver cells

Cell membrane of all body cells

Layer of earth where life is present is called

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Hydrosphere

Lithosphere

Biosphere

Topography

Mutation may be caused by

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Chemicals

Radiations

Mutagens

All of these

Plants like cacti store their water in large:

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Collenchyma tissues

Mesenchymal tissues

Parenchyma tissues

Epidermal tissues

Platyhelminthes have

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Asymmetrical body

Radial symmetry

Bilateral symmetry

Diploblastic organization

The eating of grasses is termed as

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Grassing

Browsing

Eating

None of above

What is the risk of a colour blind child in a family when mother is colour-blind but father is normal?

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100%

75%

50%

25%

The fourth trophic level includes the:

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Producers

Tertiary consumers

Secondary consumers

None of these

Which one of following structures is formed from mesoderm?

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Intestinal lining

Muscles

Skin

Brain

Sahara Desert i found in :

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Europe

America

Africa

Australia