Question # 1

Retroviruses cause tumors in

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Rodents

Fowls

Cats

All

Enzymes cannot work in which of the following

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Aqueous medium

Dry medium

Acidic medium

Alkaline medium

Macronutrients are required by the organisms in:

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Small amount

Large amount

Traces

Never required

The optimum temperature for most of the enzymes in human body is

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37 ^oC

35^oC

37 ^oF

98.6^oC

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

According to Darwin descent with modification means

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Same ancestor

Same characters

Different ancestors

Different characters

Fresh water ecosystem cover the land only:

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2%

3%

4%

1%

Which of the following is correct about insulin

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Inhibit glycogen hydrolysis

Increase protein synthesis

Increase glycolysis

All

A collection of related parts that function as a unit is called:

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Organ

Organism

System

Individual

Color blindness, haemophilia and gout form linkage group onj

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Chromosome 9

Chromosome 19

x-chromosome

y-chromosome

The ecosystem present on land or soil is called

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Terrestrial ecosystem

Lithospheric ecosystem

A and B

None

What is cause of Eutrophication

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Excreta

Phosphate

Nitrates

All

Crustose refers to:

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Aquatic lifeless structure

Aquatic lively structure

Land lively structure

Land lifeless structure

Which of the following sugar is abundant in muscle fibres

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Myoglobin

Starch

Glycogen

Oxygen

It is not a steroid hormone

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Epinephrine

Estrogen

Progesterone

17 β hydoxy Testosterone

Similar groups of individuals who can interbreed and produce organisms of their own kind form a:

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population

community

species

succession

It is not a symptom of AIDS

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Swollen lymph nodes

Loss of immunity

Swollen neck

Pneumonia

Which of the following has chitinous cuticle in the exoskeleton

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Arthropoda

Porifera

Echinodermata

Annelida

Which of the following are suicidal bags

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Lysosomes

Ribosomes

Centriole

Mitochondria

Normal fruit flies have

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White eyes

Bright red eyes

Light red eyes

Black eyes

SRY in located at the tip of

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Short arm of X-chromosome

Short arm of Y-chromosome

Long arm of Y-chromosome

Long arm of X-chromosome

Both organisms benefit from the ______ relationship

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Mutualism

Commensalism

Parasitism

All of above

Normal fruit flies have :

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White eyes

Bright red eyes

Light red eyes

Black eyes

The amount of energy left after plant have met their respiratory need is net primary production called as

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Mass

Gross production

Biomass

None

Enzymes present in human body generally have

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Same optimum temperature and optimum pH

Same optimum temperature but different optimum pH

Same optimum pH but different optimum temperature

Different optimum temperature and optimum pH

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

The parasites that live outside the body of the host are called:

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Endoparasites

Ectoparasites

Heteroparasites

Both a & c

The simplest mono saccharide containing keto group is:

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Glyceraldehyde

Glucose

Dihydroxyacetone

Ribose

Man depends foams are potential sources of

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Carbon monoxide

Sulphur dioxide

Chlorofluorocarbons (CFCs)

Lead compounds

Vaccine for___ is under trial administration

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Hep A

Polio

Measles

AIDS

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

They are Tumor causing viruses and are usually host specific

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Polio viruses

Retroviruses

Oncoviruses

Both b and c

The gross production of an ecosystem is its total

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Photosynthesis

Net production

Photosynthate

Biomass

Head of T4 bacteriophage contain

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Single stranded DNA

Double stranded DNA

Single stranded RNA

Both RNA and DNA

The change in frequency of alleles at a locus that occurs by chance is called :

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genetic drift

genetic change

gene mutation

gene frequency

Bilirubin

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Turns skin Yellow

Damages brain cells

Causes jaundice

All of these

Succession begins by a few hardy invaders called:

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Founders

Initiators

Pioneers

Leaders

How many nitrogen atoms are found in lecithin

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1

2

3

4

Ultimate source of all changes is :

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Mutation

Genetic drift

Evolution

Migration

Coniferous forests of high altitude are known as:

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tundra

Boreal

Alpine

Arctic

Dominant species of mammals in grassland are the:

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Omnivores

Herbivores

Carnivores

Insectivores

Radial symmetry is present in

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Adults of annelida

Adults of echinodermata

Adults of Cnidaria

Both B and C

Grazers feed mainly on which kind of plants

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Tree leaves

Shrubs

Grasses

Cereals

Which is irrelevant?

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Genome to virus structure

Capsomeres to Capsid

Tumors to retroviruses

Envelope to all viruses

Each biome consists of a combination of plants and animals in the fully developed

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Climax community

Community

Population

None of above

______ is a group of interbreeding individuals occurring together in space and time

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Population

Species

Community

All of above

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

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Cd2

Cd4

Cd8

Gp120

Darwin proposed a mechanism for evolution, which he termed

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Natural selection

Special reaction

Adaptation

Descent with modification

Which of the following is always an intracellular parasite

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Zooparasite

Viral parasite

Phyto parasite

Microbial parasite

The study of the relationship of animals to environment is called:

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Biology

Ecology

Microbiology

Zoology

Animals feed on green plants and grasses are called

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Grazers

Produces

Consumers

Predators

How may gene pairs contribute to the wheat grain colour?

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one

two

three

four

Parasites that live inside the body of the host:

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Endoparasites

Ectoparasites

Mesoparasites

Both a & c

On poles, the average temperature is

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Zero°C

5°C

Below freezing point

None

Pick the odd one

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Cellulose

Galactose

Agar

Pectin

The actual location or place where an organism lives is called its:

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Niche

Habitat

Abode

Terrain

The ecosystem consists of two basic interacting components:

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Living and physical

Biotic and abiotic

Living and biotic

Both a & b

In a phospholipid molecule, fatty acid is attached to the carbon number_____ of glycerol.

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1

2

Both

3

The term niche in ecolgy was first proposed by:

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Charles Eton

Ernst Haeckel

Joseph Grinnell

Carolus Linnaeus

A thin layer (zone) of earth in which all living organisms exist is called:

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Biosphere

Biome

Ozone

Ecosphere

Pseudo-autosomal genes are present on

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X-chromosome

Y-chromosome

Both a & b

Autosomes

The gill pouches present in embryos of mammals :

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support that ontogeny recapitulates phylogeny

homologous structures

used by embryos to breathe

evidence for the degeneration

Highest number of carbons are present in

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Butyric acid

Acetic acid

Palmitic acid

Oleic acid

Diabetes is the leading cause of

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Kidney failure

Adult blindness

Heart disease

All of these

Sickle cell mutation affects

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One beta chain

Both beta chains

Only alpha chain

None of the alpha or beta chain

Cells recycle their dead parts with the help of

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Centrioles

Vacuoles

Lysosomes

Golgi apparatus

Which one of the following phylum is the example of coelomates

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Flatworms

Round worms

Segmented worms

Unsegmented worms

There are ______ major terrestrial biomes

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2

4

6

8

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

Patient of AIDS is susceptible to many infections due to

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Severe pneumonia

Swollen lymph nodes

Loss of immune system

All of these

Platyhelminthes have

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Asymmetrical body

Radial symmetry

Bilateral symmetry

Diploblastic organization

Producers are

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Heterophs

Green plants

Carnivores

Herbivores

The succession started on deserts is termed as

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Hydrosere

Xerosere

Derosere

None of the above

A thin layer of earth in which all living organisms live is called:

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Biosphere

Habitat

Niche

Hydrosphere

Synaptic vesicles are present in synaptic knob that is part of

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Post synaptic neuron

Pre synaptic neuron

Both neurons

Second neuron

Which of the following properties is incorrect for both mitochondria and chloroplast?

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Both have an electron transport system

ATP synthesis

Both are present in all cells

Both have double membrane structures

The study of human population and factor affecting it is called

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Population census

Population dynamics

Demography

Etymology

Chloroplasts and mitochondria differ from one another because

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Both are membranous organelles

Both are non-membranous organelles

Both are not present in all cells

Both do not contain proteins

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

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Fermentation

Respiration

Photosynthesis

Chemosynthesis

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

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biology

ecology

zoology

mycology

Mutation may be caused by

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Chemicals

Radiations

Mutagens

All of these