Last updated on August 30th, 2023 at 10:28 pm
Icse class 6 biology the cell question answer
Fill in the blanks
The smallest unit of life is the ________.answer: cell
The ________ controls the flow of substances in and out of the cell.answer: cell membrane
An organism made up of many cells is called a ________.answer: multicellular organism
The ________ supports a plant cell because it is made up of a tough material called cellulose.answer: cell wall
The colorless, jelly-like viscous substance present in the cell is called ________.answer: protoplasm
The smallest cell is the bacteria ________.answer: mycoplasma
The organelle that helps in making food in a plant cell is called the ________.answer: chloroplast
The largest cell is the ________ egg.answer: ostrich
The cytoplasm and nucleus together are known as ________.answer: protoplasm
The organisms made up of only one cell are known as ________ organisms.answer: unicellular
Animal cells lack a ________ and ________, except for the rotozoan euglena.answer: cell wall, plastids
Plant cells lack a ________ and ________.answer: centrosome, centrioles
Answer the following questions
What is the function of the cell membrane?
Answer: the cell membrane controls the flow of substances in and out of the cell.
What is protoplasm made up of?
Answer: protoplasm is made up of four elements: carbon, hydrogen, nitrogen, and oxygen.
What is the difference between unicellular and multicellular organisms?
Answer: unicellular organisms are made up of only one cell, while multicellular organisms are made up of many cells.
What is the role of cytoplasm in the cell?
Answer: the cytoplasm is responsible for giving a cell its shape, filling out the cell, and keeping organelles in their space.
What is the difference between animal cells and plant cells?
Answer: animal cells are generally smaller in size, lack a cell wall and plastids, and have centrosomes and centrioles. Plant cells are larger in size, have a rigid cell wall of cellulose, and contain plastids, but lack centrosomes and centrioles.
What is the smallest cell and what type of organism does it belong to?
Answer: the smallest cell is mycoplasma, and it belongs to bacteria.
What is the largest cell?
Answer: the largest cell is the ostrich egg.
What is a cell?
A cell is the smallest unit of life which performs a specific function and has a definite structure.
What substances can enter and exit a cell through the cell membrane?
The dissolved substances such as food and oxygen can enter into the cell, whereas the waste products such as carbon dioxide can go out from the cell through the pores of the cell membrane.
What is the function of the nucleus in a cell?
The nucleus controls all the activities of the cell.
What are organelles?
Organelles are tiny structures present in the cytoplasm of a cell.
What are the two types of endoplasmic reticulum and how are they distinguished?
The two types of endoplasmic reticulum are smooth endoplasmic reticulum and rough endoplasmic reticulum, which are distinguished by the absence or presence of ribosomes on their surface.
What is the function of mitochondria in a cell?
Mitochondria provide energy for all the activities of the cell.
What are centrosomes and what do they consist of?
Centrosomes consist of two minute granules called centrioles.
What are dictyosomes and in which type of cell are they found?
Dictyosomes are a simpler unit of the golgi apparatus and are found in plant cells.
What is the function of the cell membrane?
The cell membrane separates the cell from its surrounding medium and also separates the cells from one another.
What is the function of the cell wall in a plant cell?
The cell wall gives shape and support to the plant cell and is absent in animal cells.
What is cytoplasm?
Cytoplasm is a transparent jelly-like material which fills the cell between the nucleus and cell membrane.
What are lysosomes and what is their function?
Lysosomes are a kind of garbage disposal system of a cell, responsible for breaking down and digesting waste materials.
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