Question # 1

It is community relay

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Niche

Evolution

Speciation

Succession

Which of the following reaction is reverse of others

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Hydrolysis

Decondensation

Decomposition

Condensation

Bacterial and fungi are mainly included in the group of

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Consumers

Decomposers

Producers

None of these

Methylation of proteins occur in

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Transport vesicles of endoplasmic reticulum

Lysosomes

Golgi apparatus

Transport vesicles of Golgi bodies

Which of the following features is not shared by prokaryotic and eukaryotic cells

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Ribosome

Cytoplasm

Cell membrane

Nuclear membrane

Between 80 to 90% of the original energy is lost as heat as a byproduct of

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Photosyntheis

Urine

Respiration

All of the above

Genes can be mapped on chromosomes on the basis of

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Sex linkage

Assortment

Recombination frequency

Gene sequencing

Xerosere starts with __________ stage.

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Crustose lichen

Foliose lichen

Mass

Shrub

These are the receptors which respond to the mechanical condition of internal organs

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Nocireceptors

Receptors of skin

Receptors of stomach wall

Receptors of eye

The nutrient cycles are also called as

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Biogeochemical cycles

Biochemical cycles

Geo-cycles

All of above

Which one of the following is true

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Population is a larger unit than a community

Bioshpere is a smaller unit than a biome

Biome and community are equal units

Biome is a larger unit than population

In which types of soil does water logging occur?

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Silt

Clay

Gravel

Sand

Allele for whiteness in Drosophilla is

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Recessive

Codominant

Dominant

Partially dominant

Insulin is a/an:

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Osmotic Protein

Transport Protein

Regulatory Protein

Catalytic Protein

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

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Histidine

Valine

Proline

Leucine

Inorganic ions can play a role of ¬¬¬¬¬¬¬______ in enzyme catalysis

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Coenzyme

Inhibitor

Apo enzyme

Cofactor

The study of a single population's relationship to its environment will be called as

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Autecology

Synecology

Ecology

Biogeopraphy

Mutation of one or two N-bases is

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Inversion

Point mutation

Deletion

Chromosomal aberrations

Which is correct about myelin sheath

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It speeds up conduction

It is found in all axons

It is found in all dendrites

It is proteinaceous only

The organelle that protect the cell from invading organisms is

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Centriole

Lysosome

Mitochondrion

Vacuole

How many nitrogen atoms are found in lecithin

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1

2

3

4

Overgrazing

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Promotes salinity

Promotes erosion

Promotes grasses

Inhibits dicot competitors

Tritanopia is blindness of

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Red Colour

Green Colour

Blue Colour

Pink Colour

Endocytosis of an apoptotic body is termed as

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Pinocytosis

Exocytosis

Phagocytosis

Apoptosis

The amount of DNA in _____ is one half to that of_____:

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Somatic cells, Germ cells

Osteocytes, Somatic cells

Germ cells, Somatic cells

Somatic cells, Gametocytes

All chromosomes other than sex chromosomes are called

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Linked Chromosomes

Autosomes

Autophagosommes

Dictyosomes

______ components include all living organisms including plants and animals supported by biosphere

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Biotic

Abiotic

Physical

Both a and b

Prosthetic groups are

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Radicals

Inorganic molecules

Organic molecules

Metal ions

Normal fruit flies have :

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White eyes

Bright red eyes

Light red eyes

Black eyes

Which of the following things were not collected by Darwin?

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Specimens of diverse faunas and floras of south America

South American fossils

13 types of finches

Turtles

Primary consumers form ______ trophic level

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First

Second

Third

Forth

Endosymbiont hypothesis was first proposed by

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Lynn Margulis

Malthus

Cuvier

Darwin

The specificity of enzymes is due to their

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High molecular weight

pH sensitivity

Hydrogen bonding

Surface configuration

Plants growing in xeric (dry) condition are called:

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Hydrophytes

Xerophytes

Mesophytes

Derophytes

Flavin adenine dinucleotide is a

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Prosthetic group

Activator

Coenzyme

Inhibitor

Succinic acid differs from malonic acid by

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OH

CH₂

CH₃

CHO

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

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Negative feedback

Positive feedback

Primary feedback

None

The animal that is caught and eaten is called:

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Prey

Host

Victim

Quarry

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

Which of the following acts as a bridge between enzyme and substrate?

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Activator

Cofactor

Prosthetic group

Apo-enzyme

A Cell interacts with its external environment through

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Cell Wall

Nuclear membrane

Plasma membrane

Cytoplasm

Which of the following is not true about abiotic components

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Water

Temperature

Consumers

Gravity

The intake of liquid material across the cell membrane is called as

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Phagocytosis

Pinocytosis

Endocytosis

Exocytosis

Which of the following is Koshland model

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Active site is rigid

Active site may be molded to précised shape

Position of active site is moveable

None

There is an association between two organisms, which brings benefits to both the organisms

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Predation

Symbiosis

Parasitism

None of above

Biotic components includes all the

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Nonliving components

Living components

Nonliving and living both

None of these

The fourth trophic level includes the:

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Producers

Tertiary consumers

Secondary consumers

None of these

Pick out the phospholipid from the following

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Phosphatidylserine

Lecithin

Phosphatidylcholine

All

Monoculture is

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One organism

A lab culture

A pure culture

Both b and c

Coniferous forests located at high latitude are called

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Boreal

Taiga

Tundra

Alpine

The hormones which share common hypothalamic factor are

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FSH and LH / ICSH

ACTH and GH

ICSH and LTH

Prolactin and FSH

The change in structure of community of an ecosystem during a time period is called

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Succession

Evolution

Mutation

Regression

The symbiotic relationship in which both the partners get benefit is:

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Parasitism

Commensalism

Predation

Mutualism

Both meissner’s and pacinian corpuscles have____ nerve endings

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Spiral

Encapsulated

Free

Deep

Head of T4 bacteriophage contain

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Single stranded DNA

Double stranded DNA

Single stranded RNA

Both RNA and DNA

Nutrient elements become the part of protoplasm during

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Photosynthesis

Decomposition

Fixation

Assimilation

_____ is a good example of polymorphism

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Hydra

Obelia

Starfish

Euplectella

Which one of the following always contains DNA?

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Centriole

Lysosome

Golgi apparatus

Mitochondrion

The parasite that lives inside the body of the host is called as

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Endoparasite

Ectoparasite

Outer parasite

All of above

According to fluid mosaic model of cell membrane

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The most common type of molecules in the membrane are proteins

Basic membrane structure results from how proteins interact with water

The membrane is highly mobile mixture of phospholipids and proteins

The unique properties of cell types are determined by their phospholipids

It is not a steroid hormone

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Epinephrine

Estrogen

Progesterone

17 β hydoxy Testosterone

An organism of the lineage of animals in which the blastopore of the developing embryo becomes the anus, while a second opening becomes the mouth called:

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Triploblastic

Protostome

Diploblastic

Deuterostome

The essential requirement for life is:

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Minerals

Water

Carbohydrates

Proteins

All populations within an ecosystem are known as a:

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Population

Community

Species

Clan

The simplest reflex circuit includes___ elements

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1

2

3

4

What are the environmental buffers?

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Trees

Animals

Factories

Microbes

About ______% if the total energy from the sun is trapped by the producers in an ecosystem

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0.5

1.0

1.5

2.0

In life cycle of bacteriophage, ______ occurs followed by_______.

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Assembly. Penetration

Multiplication, landing

Tail contractio, Penetration

Penetration, Assembly

Which can convert glucose to glucose 6 phosphate

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Hexokinase

Glucokinase

Phospho fructokinase

Both a & b

Which of the following virus is DNA enveloped

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Polio virus

Hepatitis B virus

HIV

Measles virus

Animals devoid of respiratory, excretory and circulatory organs are

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Tapeworms

Sponges

Earthworm

Live fluke

The succession started after destruction of an area is called as

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Primary succession

Secondary succession

Tertiary succession

Quartnary succession

Osteoporosis is caused by lack of

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ADH

Melanin

Estrogen

STH

According to Darwin descent with modification means

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Same ancestor

Same characters

Different ancestors

Different characters

A group of ribosomes attached with same mRNA form polysome for

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Better expression of Gene

Rapid production of protein

Increased production of protein

Protein export

Nicotinamide adenine dinucleotide is an example of

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Cofactor

Coenzyme

Prosthetic group

Nucleotide

Anti-Rh antibodies appear in plasma

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During first few months

During last months

Only when stimulated

If Rh⁺individual mistakenly receives Rh^-blood

All of the following are present in mitochondria, EXCEPT

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Cristae

Ribosomes

DNA

Thylakoids

Overgrazing resulted in

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Diminishing the grasses

Desert

Barren land

All of these

The rate of enzyme action will be minimum at

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Optimum pH

Optimum temperature

Optimum conditions

Maximum temperature

The term ecology comes form the ______ words oikos, meaning "The family household"

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Greek

Latin

English

French