Test: Cell : The Fundamental Unit Of Life - 4


25 Questions MCQ Test General Science for UPSC (Civil Services) Prelims | Test: Cell : The Fundamental Unit Of Life - 4


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QUESTION: 1

Match the following with the correct response.

Solution:
QUESTION: 2

Which of the following lacks nucleus-

Solution:

Mature RBC lacks nucleus, hence RBC is called as red blood corpuscles.

QUESTION: 3

Which organelle releases energy?

Solution:

Mitochondria are called as power house of the cell because it contain enzymes for cellular respiration in which energy is released in form of ATP.

QUESTION: 4

Eukaryotic cells have 
A. Distinct nucleus
B. Nucleolus 
C. nuclear membrane  
D. Nucleoid

Solution: Eukaryotic cell contain a distinct nucleus,nucleolus which present inside the nucleus and a well nuclear membrane..
QUESTION: 5

“All cells arise from per existing cells” who said this?

Solution:

R. Virchow in 1855 presented the idea that all cells arise from pre-existing cells. This was modification in the earlier cell theory.

QUESTION: 6

Match the following with correct response.

Solution:
QUESTION: 7

Animal cell lacking nuclei would also lack in

Solution:

Animal cell that do not contain nuclei also lack in chromosome. As chromosome is present in the nucleus of the cell.

QUESTION: 8

What is the full form of ATP?

Solution:

The full form of ATP is adenosine tri phosphate. It is known as energy currency of the cell.

QUESTION: 9

The passage of water from a region of higher water concentration through a semi – permeable membrane to region of low water concentration is

Solution:

The passage of water from a region of higher water concentration to lower concentration through a semi-permeable membrane is called osmosis.

QUESTION: 10

Which of the following is known as “physical basis of life”?

Solution:

The physical basis of life is protoplasm which contains all the cell organelles present in the cell.

QUESTION: 11

Which of the following organelles is smallest in size?

Solution: Osmosis is the process in which water travel through high conectrate to lower concentrate. diffusion is the process of mixing up of substances due to the random motion of their components atoms,molecules,and ions genes is also known as DNA .it transfer through their parents to their child so,it is called hereditary unit.
QUESTION: 12

The number of chromosome present in frog is

Solution:

There are 26 chromosomes in cells of frog. Chromosomes are present in nucleus of each cell. The transfer of traits takes place through chromosome.

QUESTION: 13

Which organelle is called power of house of the cell-

Solution:

Mitochondria are called the power house of the cell because it contain enzyme for cellular respiration in which energy is released in form of ATP

QUESTION: 14

Root hair absorbs water from soil through

Solution: A nucleus is often the largest organelle in a plant cell. It is enclosed by a double membrane called the nuclear envelope. A phospholipid layer that covers a cell's surface and acts as a barrier between the inside of a cell and the cell's environment.
QUESTION: 15

The term protoplasm was coined by

Solution:

The term protoplasm was coined by J.E Purkinje. Protoplasm is the fluid medium in which different cell organelles are present.

QUESTION: 16

Match the following with correct response.

Solution:
QUESTION: 17

Ribosomes are the centre for

Solution:

Protein synthesis involve formation of amino acid chain according to information present on DNA. Ribosomes provide site for protein synthesis.

QUESTION: 18

Which of the following imparts colours to flower to attract insects for pollination?

Solution:

In plant cells, plastids are present that impart colours to the plant parts. Green colour is provided by chloroplast and other colour except white is imparted by chromoplas

QUESTION: 19

Which organelle is called the suicide bag of the cell

Solution:

Lysosome is called as the suicide bag of the cell as it contain enzymes for hydrolysis of all cell components in case of injury.

QUESTION: 20

Which of the following are the main constituents of cell wall?

Solution:
QUESTION: 21

Match the following with correct response.

Solution:
QUESTION: 22

A cell has 10 chromosomes. After mitotic cell divisions the number of chromosomes in the daughter cell with be

Solution:

After mitosis two identical cells are created with the same original number of chromosomes as the parent cell.
If the cell has 5 pairs of chromosomes, i.e., 10 chromosomes, then the two daughter cells produced will also have 10 chromosomes. This is because mitosis is an equational division. Hence, the chromosome number remains constant.

QUESTION: 23

Statement A: The secretary proteins are packed inside the secretory vesicles which are pinched off from the Golgi apparatus. 
Statement B : ER is absent in the red blood cells of mammals. 
Which of the two statement is true

Solution:

The secretory proteins are packed inside the secretory vesicles which are formed by Golgi apparatus. Endoplasmic reticulum is absent in the red blood cells of mammals. So, both statements are correct.

QUESTION: 24

Which of the following acts as garbage disposal system of the cell?

Solution:

Lysosomes present in the cytoplasm of cell contain very strong enzymes that can breakdown the all organic wastes produced in the cell. So, lysosome is called as garbage disposal system of the cell.

QUESTION: 25

The largest cell in the human body is

Solution: