CURIOUSITY QUIZ: THE FUNDAMENTAL UNIT OF LIFE

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Test Your knowledge on the topic ' The Fundamental Unit of Life' prepared exclusively according to the NCERT science curriculum for Class-9 . Attempt all the questions by clicking on the right option. Submit the completed Form by clicking the 'Submit' button at the end of the Form. Get your Score and the correct Answer by clicking the 'View score' button. Good Luck!

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Who first presented the Cell Theory that plants and animals are made up of cells and that cells are the basic units of life ?

1 point

Robert Brown in (1831)

Robert Hooke (1665)

Schleiden and Schwann (1838-1839)

Jan Evangelista Purkinje (1839)

Clear selection

What are the three features common to most cells?

1 point

Cell Wall, Nucleus, Ribosomes

Cell Wall, Nucleus, Cytoplasm

Cell Membrane, Nucleus, Cytoplasm

Cell Wall, Nucleus, Mitochondria

Clear selection

Plasma membrane is called a Selectively permeable membrane because :

1 point

It allows the entry of certain useful materials into the cell.

It allows the exit of certain undesirable materials out of the cell.

All the above

None of the Above

Clear selection

How does the movement of substances take place across the Plasma membrane between the cell and its environment?

1 point

By Diffusion

By Osmosis

By both Diffusion and Osmosis

By Gravity and Hydrostatic Pressure

Clear selection

The plant Cell wall is mainly composed of a complex substance that provides structural strength to plants. The substance is:

1 point

Lipids

Chitin

Cellulose

Protein

Clear selection

Which is NOT true in case of the Nucleus of a cell?

1 point

The genetic materials of the Cell are stored in the Nucleus.

It plays a central role in cellular division.

It directs the chemical activities required for the life processes of the cell.

It helps in cellular respiration.

Clear selection

In a Prokaryotic cell, the Nuclear region is poorly defined, as it lacks a :

1 point

Protein layer

Plasma membrane

Nuclear Membrane

Cell Wall

Clear selection

How many layers does the Nuclear membrane consist of :

1 point

Clear selection

Which organism does lack any membrane and hence do not show characteristics of life until it enters a living body and use its cell machinery to multiply?

1 point

Fungi

Bacteria

Virus

Protozoa

Clear selection

The Rough and the Smooth Endoplasmic Reticulum of a cell basically help to synthesize :

1 point

Lipids and Protiens respectively

Proteins and Lipids respectively

Lipids and Starch respectively

Proteins and Starch respectively

Clear selection

Who worked throughout his life in devising techniques for tracing the processes and most delicate ramifications of nerve cells in particular. He shared the Nobel prize in 1906 for his work on the structure of the nervous system.

1 point

Matthias Jakob Schleiden

Theodor Schwann

Camillo Golgi

Rudolf Virchow (1855)

Clear selection

Which are the strange organelles of an animal cell in the sense that they have their own DNA and Ribosomes, and , hence, are able to make some of their own proteins ?

1 point

Mitochondria

Endoplasmic Reticulum

Golgi Apparatus

Leucocytes

Clear selection

Which are the strange organelles of a plant cell in the sense that they have their own DNA and Ribosomes, and , hence, are able to make some of their own proteins ?

1 point

Chloroplast

Endoplasmic Reticulum

Golgi Apparatus

Leucocytes

Clear selection

The inner membrane of Mitochondria is deeply folded. These folds help to provide:

1 point

A large surface area for diffusion of ATP molecules.

A large volume for storing of ATP molecules.

A large surface area for ATP-generating chemical reactions to occur.

A small surface area useful for preventing the loss of ATP. molecules.

Clear selection

Which cell organelle in plant cells provide turgidity and rigidity to the cell?

1 point

Endoplasmic Reticulum

Vacuole

Golgi Apparatus

Mitochondria

Clear selection

A student, in an ambitious experiment, put some live Chlorophyll pigments in a nutrient solution and exposed it to air and sunlight with favourable temperature conditions. Will it prepare Carbohydrate molecules due to photosynthesis?

1 point

Yes; because all the favourable conditions for Photosynthesis are satisfied.

No; an intact Chloroplast is required for Photosynthesis.

Yes; because this is exactly similar to the method of Photosynthesis in plants.

No; Photosynthesis can take place only under natural conditions.

Clear selection

What enables the cells of plants, fungi and bacteria to exist in hypotonic media without bursting?

1 point

Vacuole

Plasma Membrane

Golgi Apparatus

Cell Wall

Clear selection

Lysosomes help to keep the cell clean by destroying any foreign material as well as worn-out cell organelles because they contain powerful:

1 point

Toxic materials

Digestive enzymes

Chemical secretions.

Organic acids.

Clear selection

What organelles does a plant cell have, but found absent in an animal cell ?

1 point

Nucleus and Cell membrane

Cell wall and Cytoplasm

Cell wall and Chloroplast

Cell membrane and Cell wall

Clear selection

Which cell organelle functions both as a passage-way for intracellular transport and as a manufacturing surface site.

1 point

Endoplasmic Reticulum

Golgi Apparatus

Mitochondria

Cell Vacuoles

Clear selection

Which organism uses the flexibility of the cell membrane to enable the cell to engulf food from its external environment ?

1 point

Bacteria.

Paramoecium

Chlamydomonas

Amoeba

Clear selection

Which process plays an important role in the exchange of gases between the cell and its surroundings ?

1 point

Osmosis

Reverse Osmosis

Absorption

Diffusion

Clear selection

Which cell organelle in a plant cell is unique in that it has its own DNA and Ribosomes so that it s able synthesize some of its own proteins (apart from Mitochondria)?

1 point

Lysosome

Golgi Compex

Rough Endoplasmic Reticulum

Chloroplast

Clear selection

A fungal cell wall primarily consists of :

1 point

Cellulose

Chitin

Peptidoglycan

None of these

Clear selection

A bacterial cell wall primarily consists of :

1 point

Cellulose

Chitin

Peptidoglycan

None of these

Clear selection

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