Question # 1

Enzymes accelerate reactions by_______the activation energy needed for the reaction.

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Stopping

Raising

Lowering

Binding

A gardner sees a large snake nearby. He knows that generally snakes sting, so the gardener ran away. The gardener did which of the following?

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Used reasoning

Used observation

Constructed a theory

Tested a hypothesis

The site for Calvin cycle is:

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Stroma

Grana

Plasmodesmata

Cytoplast

According to (UNICEF), how many children of under age five died by malnutrition?

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4 million

5 milion

6 million

None

____________ is the basis and smallest unit of classification.`

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Family

Order

Species

Genus

Chloroplast helps in _______________

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Photosynthesis

Respiration

Brething

Digestion

Cell theory was proposed by:

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Robert Hooke

Schwann

Schleiden

Both B and C

Cytokinesis in a plant cell is characterized by:

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The equal division of homologous chromosomes

A pinching off of the cell membrane to divide the cell

The formation of a cell plate in the cytoplasm

The movement of the chromosomes from the metaphase plate

Which enzyme breaks the peptide bods:

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Amylase

Protease

Lipase

None

Enzymatic reactions are _______ of times faster than uncatalyzed reactions:

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Millions

Hundreds

Thousands

Billion

Oxygen takes part in aerobic respiration is:

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Glycolysis

Link step between Glycolysis and Krebs cycle

Krebs cycle

Electron transport chain

All populations collectively are called:

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Species

Biome

Community

Ecosystem

Many diploid oogonia are present in :

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Follicles

Sperms

Spermatids

Scrottum

Genes consist of.

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RNA

mRNA

Protein

DNA

Chromosomes carry units of inheritance called as:

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Chromatin

DNA

Genes

None of these

It is an example of primary consumers.

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Cattles

Snake

Lion

Tiger

Where does the gaseous exchange occur in humans:

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Pharynx

Larynx

Trachea

Epiglottis

Which Charles Eiton developed the concept of ecological pyramids?

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1926

1927

1928

1929

In plants, gaseous exchange takes place as:

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CO2 is removed and O2 is absorbed

CO2 is absorbed and O2 is removed

CO2 and O2 both are absorbed

CO2 and O2 both are removed

The conversion of ammonia to nitrates is carried out by soil bacteria. This process is called.

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Nitrification

Denitrification

Nitrogen fixation

Assimilation

All populations collectively are called.

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Species

Blome

Community

Ecosystem

Psilocin is obtained from:

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Cactus

Mushroom

Canabis stiva

Canabis indica

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