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Test: Cell Structure & Functions- 2


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20 Questions MCQ Test Science & Technology for UPSC CSE | Test: Cell Structure & Functions- 2

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Test: Cell Structure & Functions- 2 - Question 1

Cell membrane is also called:

Detailed Solution for Test: Cell Structure & Functions- 2 - Question 1

Cell membrane is also called as cell membrane or PLASMA membrane. It forms the outer covering of the cell made up of protein and fat. It is semi-permeable in nature.

Test: Cell Structure & Functions- 2 - Question 2

Unit of inheritance in living organisms is :

Detailed Solution for Test: Cell Structure & Functions- 2 - Question 2

The transfer of traits from one generation to next generation is called inheritance. Inheritance is carried out by gene located in nucleus of the cell.

Test: Cell Structure & Functions- 2 - Question 3

Living substance of a cell is collectively known as :

Detailed Solution for Test: Cell Structure & Functions- 2 - Question 3 Total living substance in cell is protoplasm... protoplasm is made up of cytoplasm and nucleus / nucleoplasm... [ Protoplasm = cytoplasm + nucleoplasm ] blood is not present in cell.
Test: Cell Structure & Functions- 2 - Question 4

Thread like structures present inside nucleus are :

Detailed Solution for Test: Cell Structure & Functions- 2 - Question 4

Chromosomes are thin thread like structure present inside nucleus of the cell. Chromosome consists of DNA and protein. Genes are located on chromosome.

Test: Cell Structure & Functions- 2 - Question 5

The fluid present between cell membrane and nucleus is :

Detailed Solution for Test: Cell Structure & Functions- 2 - Question 5

The fluid present between cell membrane and nucleus is called cytoplasm. Cytoplasm is thick fluid medium in which different cell organelles floats.

Test: Cell Structure & Functions- 2 - Question 6

Vacuoles of plant cells are

Detailed Solution for Test: Cell Structure & Functions- 2 - Question 6

Permanent vacuoles are found in plant cells and fungi cells. The permanent vacuole of Xylem cells join together to form the xylem.

Test: Cell Structure & Functions- 2 - Question 7

Unicellular organisms reproduce by :

Detailed Solution for Test: Cell Structure & Functions- 2 - Question 7

Fission, in biology, is the division of a single entity into two or more parts and the regeneration of those parts to separate entities resembling the original.For unicellular organisms, cell division is the only method used to produce new individuals. In both prokaryotic and eukaryotic cells, the outcome of cell reproduction is a pair of daughter cells that are genetically identical to the parent cell. In unicellular organisms, daughter cells are individuals.

Test: Cell Structure & Functions- 2 - Question 8

Cell has ability to extract _____ energy from food molecules:

Detailed Solution for Test: Cell Structure & Functions- 2 - Question 8

Cells has ability to extract chemical energy from food molecules. The energy present in food molecules like glucose undergo respiration to produce chemical energy in form of ATP.

Test: Cell Structure & Functions- 2 - Question 9

Which of the following scientists discovered cells in cork slices?

Detailed Solution for Test: Cell Structure & Functions- 2 - Question 9

Robert Hooke in 1665 observed thin slices of cork under a simple magnifying device. He observed box-like structures and named them ‘cells’. This is because these structures reminded him of the cells in a monastery.

Test: Cell Structure & Functions- 2 - Question 10

Membrane of nucleus is porous so it :

Detailed Solution for Test: Cell Structure & Functions- 2 - Question 10

The membrane of nucleus is porous so it allows transport of specific proteins. Nucleus is also called as brain of the cell.

Test: Cell Structure & Functions- 2 - Question 11

Identify the statement which is true for cells.

Test: Cell Structure & Functions- 2 - Question 12

Plasma membrane is a :

Detailed Solution for Test: Cell Structure & Functions- 2 - Question 12

Plasma membrane is a bilayered membrane made up of protein and lipid. It is selectively permeable to different substances.

Test: Cell Structure & Functions- 2 - Question 13

Which of the following is a locomotory organelle in protozoa ?

Detailed Solution for Test: Cell Structure & Functions- 2 - Question 13

Flagella is a locomotory organelle in protozoa. Flagella is long hair like projection on the body of some protozoa.

Test: Cell Structure & Functions- 2 - Question 14

Power house of the cell is :

Detailed Solution for Test: Cell Structure & Functions- 2 - Question 14

Mitochondria is called as powerhouse of the cell because it contain enzyme for cellular respiration in which energy is released in form of ATP.

Test: Cell Structure & Functions- 2 - Question 15

Which of the following is selectively permeable?

Detailed Solution for Test: Cell Structure & Functions- 2 - Question 15

Cell membrane is a selectively permeable membrane because it allow some substance to cross but prevents the other.

Test: Cell Structure & Functions- 2 - Question 16

Plant cell wall is made up of :

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The cell wall of plant is made up of cellulose. Cellulose is a complex sugar which cannot be digested by human beings.

Test: Cell Structure & Functions- 2 - Question 17

Which of the following group is prokaryotes ?

Detailed Solution for Test: Cell Structure & Functions- 2 - Question 17

The cell which lack well developed nuclear membrane is called prokaryotic organism. Blue green algae and amoeba are example of prokaryotic organism.

Test: Cell Structure & Functions- 2 - Question 18

Which of the following occurs only in animal cell?

Detailed Solution for Test: Cell Structure & Functions- 2 - Question 18

Centrosomes are present only in animals cell. Centrosome produces fimbriae that help in cell division. Chromosome and ribosome are present in both animal and plant cell.

Test: Cell Structure & Functions- 2 - Question 19

The plastid responsible for fruit colour is :

Detailed Solution for Test: Cell Structure & Functions- 2 - Question 19

The colour of the plant is due to presence of different kinds of plastids. Chromoplast provides all colours except green and white.

Test: Cell Structure & Functions- 2 - Question 20

Which of the following occurs only in plant cell?

Detailed Solution for Test: Cell Structure & Functions- 2 - Question 20

Dictyosomes are present only in plant cell. Centrosomes is present in animals cells only and mitochondria and ribosomes are present in both plant and animal cell.

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