Question 3 :
Amoeba obtain its food by the process of phagocytosis. State true or false.
Question 4 :
Name the organelle which show analogy written as: Power house of the cell.
Question 5 :
Carry out the following osmosis experiment:
Take four peeled potato halves and scoop each one out to make potato cups. One of these potato cups should be made from a boiled potato. Put each potato cup in a trough containing water. Now,
(a) Keep cup A empty
(b) Put one teaspoon sugar in cup B
(c) Put one teaspoon salt in cup C
(d) Put one teaspoon sugar in the boiled potato cup D.
Keep these for two hours. Then observe the four potato cups and Why is potato A necessary for this experiment?
Question 6 :
Which kind of plastid is more common in root of the plant?
Question 8 :
Where do the lipids and proteins constituting the cell membrane get synthesized?
Question 9 :
Which type of cell division is required for growth and repair of body?
Question 10 :
When golgi apparatus is removed from the cell, formation of lysosomes, secretory vesiscles will stop. Is it true?
Question 11 :
As lysosomes are organelles which on bursting can kill cells possessing them, they are called suicide bags. Is it true?
Question 12 :
Osmosis is diffusion of water from the region of its higher concentration (pure water or dilute solution) to the region of its lower concentration (strong solution) through a semipermeable membrane. Is it true?
Question 13 :
If you are provided with some vegetables to cook, you generally add salt into vegetables during cooking process. After adding salt, vegetables release water. What mechanism is responsible for this?
Question 14 :
Cells are called as the structural and functional units of life because __________.
Question 15 :
When rheo leaves are boiled in water first and then a drop of sugar syrup is put on it, can we say that boiling shall kill the leaves?
Question 16 :
When a red blood cell is kept in concentrated salt solution, they shrink and give a shrivelled appearance (crenation).
Is it true?
Question 17 :
When the plasma membrane of a cell breaks down, it results in death of the cell as protoplasmic structures will get dispersed. Is it true?
Question 18 :
Name the organelles in plant cell that contain their own genetic materials and ribosomes.
Question 20 :
Which cell organelle controls most of the activities of the cell?
Question 21 :
Name the organelle which show analogy written as: Storage sac of the cell.
Question 23 :
A cell having higher water content or hypotonic cell sap will undergo exosmosis and, therefore, lose water. It may undergo plasmolysis. Is it true?
Question 25 :
Name the organelle which show analogy written as: Transporting channels of the cell.
Question 26 :
Do you agree that a cell is the building unit of an organism?
Question 28 :
Which kind of plastid is more common in flowers and fruits?
Question 29 :
Name the organelle which show analogy written as: Kitchen of the cell.
Question 33 :
We eat food composed of all the nutrients such as carbohydrates, proteins, fats, vitamins, minerals and water. After digestion, they are absorbed in the form of glucose, amino acids, fatty acids, glycerol, etc. What mechanisms are involved in the absorption of digested food and water?
Question 34 :
Lysosomes are called scavengers of the cell because they remove cell debris consisting of dead and worn out cell organelle by digesting the same. Is it true?
Question 35 :
Which kind of plastid is more common in leaves of the plant?
Question 37 :
The skin of your fingers shrink when you wash clothes for a long time due to exosmosis. Is it true?
Question 38 :
Mitochondrion is known as the powerhouse of the cell because it contains enzymes that are needed for stepwise oxidation of food stuffs (carbohydrate, fats or lipids and proteins) present in the cells to $CO_2$ and water. Is it true?
Question 39 :
Name the organelle which show analogy written as: Digestive bag of the cell.
Question 40 :
If the plasma membrane reptures or break down then the constant internal chemical composition of the cell will be lost and it will not be able to perform its basic functions. Is it true?
Question 41 :
A cell having equal water concentration to its surrounding medium will neither gain nor lose water to the external medium.
Is it true?
Question 42 :
If the organisation of a cell is destroyed due to some physical or chemical influence, what will happen?
Question 43 :
When dry apricot are left for some time in pure water and later transferred to sugar solution, can we say that when placed in pure water, dry apricots swell up due to endosmosis. On being transferred to sugar solution, they shrink due to exosmosis?
Question 44 :
Name the organelle(s) in a plant cell that contain their own genetic material and ribosome.
Question 45 :
Carry out the following osmosis experiment:
Take four peeled potato halves and scoop each one out to make potato cups. One of these potato cups should be made from a boiled potato. Put each potato cup in a trough containing water. Now,
(a) Keep cup A empty
(b) Put one teaspoon sugar in cup B
(c) Put one teaspoon salt in cup C
(d) Put one teaspoon sugar in the boiled potato cup D.
Keep these for two hours. Then observe the four potato cups and Explain why water gathers in the hollowed portion of B and C.
Question 46 :
A cell having low water concentration or hypertonic cell sap will undergo endosmosis and absorb water from outside. It would become turgid. Is it true?
Question 47 :
Plasma membrane is called selectively permeable membrane because it allows the movement of only selected molecules across it. State true or false
Question 50 :
How do substances such as carbon dioxide and water move in and out of the cell?
Question 52 :
We eat food composed of all the nutrients like carbohydrates, proteins, fats, vitamins, minerals and water. After digestion, these are absorbed in the form of glucose, aminoacids, fatty acids, glycerol etc. What mechanisms are involved in absorption of digested food and water?
Question 54 :
Name the organelles which are the transporting channels of the cell.
Question 56 :
The cell organelle involved in forming complex sugars from simple sugars are ______.
Question 57 :
How is a bacterial cell different from an onion peel cell?
Question 59 :
Name the organelle which is the control room of the cell.
Question 60 :
Name the organelles which are the storage sacs of the cell.
Question 61 :
In brief, state what happens when dry apricots are left for sometime in pure water and later transferred to sugar solution?
Question 63 :
If cells of onion peel and RBC are separately kept in hypotonic solution, what among the following will take place?
Question 67 :
What is the consequence of the below condition?
A cell having equal water concentration to its surrounding medium.
Question 68 :
If you are provided with some vegetables to cook. You generally add salt into the vegetables during cooking process. After adding salt, vegetables release water. What mechanism is responsible for this?
Question 69 :
How do substances like carbon dioxide ($CO_2$) and water ($H_2O$) move in and out of the cell?
Question 74 :
What is the consequence of the below condition?
A cell having low water concentration than the surrounding medium.
Question 76 :
Bacteria do not have chloroplast but some bacteria are photoautotrophic in nature and perform photosynthesis. Which part of bacterial cell performs this?
Question 81 :
The proteins and lipids, essential for building the cell membrane, are manufactured by ____.
Question 82 :
The proteins and lipids, essential for building the cell membrane, are manufactured by ____.
Question 84 :
Bacteria do not have chloroplast but some bacteria are photoautotrophic in nature and perform photosynthesis. Which part of bacterial cell performs this?
Question 85 :
In brief, state what happens when the Plasma-membrane of a cell breaks down?
Question 86 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d2b4f59b460d7261f60f.PNG' />
In the above figure, match the column A and B.
Question 91 :
Name the organelles which are the power house of the cell.
Question 93 :
If cells of onion peel and RBC are separately kept in hypotonic solution, why does RBC burst easily while cells of onion peel resist the bursting to some extent?
Question 94 :
If cells of onion peel and RBC are separately kept in hypotonic solution, what among the following will take place?
