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Test: Cell: The Unit of Life - 2 - NEET MCQ


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25 Questions MCQ Test Biology Class 11 - Test: Cell: The Unit of Life - 2

Test: Cell: The Unit of Life - 2 for NEET 2024 is part of Biology Class 11 preparation. The Test: Cell: The Unit of Life - 2 questions and answers have been prepared according to the NEET exam syllabus.The Test: Cell: The Unit of Life - 2 MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Cell: The Unit of Life - 2 below.
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Test: Cell: The Unit of Life - 2 - Question 1

Animal cell do not possess

Detailed Solution for Test: Cell: The Unit of Life - 2 - Question 1

Animal cell do not possess plasmodesmata but it contain ribosomes, centriole andplamalemma. Plasmodesmata is the connection between two plant cells.

Test: Cell: The Unit of Life - 2 - Question 2

Lipid molecules of plasma membrane occur

Detailed Solution for Test: Cell: The Unit of Life - 2 - Question 2

The lipid molecules of plasma membrane occurs parallel to each other in plasma membrane of the cell.

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Test: Cell: The Unit of Life - 2 - Question 3

How much percent of vacuoles occupy the volume of the cell in plant cells?

Detailed Solution for Test: Cell: The Unit of Life - 2 - Question 3

In plant cells the vacuoles can occupy up to 90 per cent of the volume of the cell.

Test: Cell: The Unit of Life - 2 - Question 4

Two cell organelles in plant cell having own genetic material is called

Detailed Solution for Test: Cell: The Unit of Life - 2 - Question 4

Mitochondria and chloroplast contain theirown genetic material. Genetic material is mainly present in nucleus of the cell but these two cell organelles also contain own genetic material.

Test: Cell: The Unit of Life - 2 - Question 5

The ability of a living somatic nucleated cell to form the complete organism is called

Detailed Solution for Test: Cell: The Unit of Life - 2 - Question 5

The ability of a living somatic nucleated cell to form the complete organism is called cellular totipotancy. Cellular totipotancy is present in plant cells.

Test: Cell: The Unit of Life - 2 - Question 6

The plasma membrane consists mainly of

Detailed Solution for Test: Cell: The Unit of Life - 2 - Question 6

The plasma membrane is composed of lipids that are arranged in a bilayer. Also, the lipids are arranged within the membrane with the polar head towards the outer sides and the hydrophobic tails towards the inner part. The membrane proteins can be classified as integral or peripheral. Peripheral proteins lie on the surface

Test: Cell: The Unit of Life - 2 - Question 7

Chlorophyll is located inside

Detailed Solution for Test: Cell: The Unit of Life - 2 - Question 7

The chloroplast consists of a number of organised flattened membranous sacs called the thylakoids,Chlorophyll pigments are present in the thylakoids.

Test: Cell: The Unit of Life - 2 - Question 8

The stacks of closely packed thylakoids is called

Detailed Solution for Test: Cell: The Unit of Life - 2 - Question 8

The stacks or closely packed thylakoids is called granum. Chlorophyll is present inside the thylakoidsto perform photosynthesis in plant cells.

Test: Cell: The Unit of Life - 2 - Question 9

Longest cell in human body are

Detailed Solution for Test: Cell: The Unit of Life - 2 - Question 9

Nerve cell or neuron is the longest cell in human body. They are responsible for transferof information from one part of the body to the other in form of nerve impulses.

Test: Cell: The Unit of Life - 2 - Question 10

The most recent and accepted model of plasma membrane is

Detailed Solution for Test: Cell: The Unit of Life - 2 - Question 10

Fluid-Mosaic model is the most recent and accepted model of plasma membrane. This model was proposed by Singer and Nicolson in 1972. The quasi-fluid nature of lipid enables lateral movement of proteinswhithin the overall bilayer.

Test: Cell: The Unit of Life - 2 - Question 11

The nucleus was first described by

Detailed Solution for Test: Cell: The Unit of Life - 2 - Question 11

Nucleus as a cell organelle was first described by Robert Brown as early as 1831.

Test: Cell: The Unit of Life - 2 - Question 12

Which one is present nearest to plasmamembrane?

Detailed Solution for Test: Cell: The Unit of Life - 2 - Question 12

The cell wall of a young plant cell, the primary wallis capable of growth, which gradually diminishes as the cell matures and the secondary wall is formed on the inner (towards membrane) side of the cell.

Test: Cell: The Unit of Life - 2 - Question 13

Which one is not a difference between Prokaryotic and Eukaryotic cell?

Detailed Solution for Test: Cell: The Unit of Life - 2 - Question 13

Most prokaryotic cells, particularly the bacterial cells, have a chemically complex cell envelope. All eukaryotic cells are not identical. Plant and animal cells are different as the former possess cell walls.

Test: Cell: The Unit of Life - 2 - Question 14

Smallest free living organism are

Detailed Solution for Test: Cell: The Unit of Life - 2 - Question 14

PleuroPneumonia Like Organisms (PPLOs) are considered as smallest free living organism. It do not contain cell membrane or cell wall and present as fluid. It causes disease in plants.

Test: Cell: The Unit of Life - 2 - Question 15

Each centriole is surrounded by dense amorphous protoplasmic masses called

Detailed Solution for Test: Cell: The Unit of Life - 2 - Question 15

All animal cell have two small organelles called centrioles. Each centriole is surrounded by dense amorphous protoplasmic masses called Massules.

Test: Cell: The Unit of Life - 2 - Question 16

Lysosomes are produced by

Detailed Solution for Test: Cell: The Unit of Life - 2 - Question 16

These are membrane bound vesicular structures formed by the process of packaging in the Golgi apparatus.

Test: Cell: The Unit of Life - 2 - Question 17

Cytoskeleton is made of

Detailed Solution for Test: Cell: The Unit of Life - 2 - Question 17

An elaborate network of filamentous proteinaceous structures present inthe cytoplasm is collectively referred to as the cytoskeleton.

Test: Cell: The Unit of Life - 2 - Question 18

The structure of plasma membrane fluid mosaic model is proposed by

Detailed Solution for Test: Cell: The Unit of Life - 2 - Question 18

An improved model of the structure of cell membrane was proposed by Singer and Nicolson (1972) widely accepted as fluidmosaic mosaic model.

Test: Cell: The Unit of Life - 2 - Question 19

The fluid filled vacuoles or vesicles which are separated from cytoplasm by a selectively permeable membrane called

Detailed Solution for Test: Cell: The Unit of Life - 2 - Question 19

Tonoplasts are the fluid filled vacuoles or vesicles which are separatedfrom cytoplasm by a selectively permeable membrane. It help in maintaining turgidity of the cell.

Test: Cell: The Unit of Life - 2 - Question 20

The photograph or diagram of metaphasicchromosome arranged in homologous pair according to their length and thickness, position of centromere is called

Detailed Solution for Test: Cell: The Unit of Life - 2 - Question 20

Ideogram is a photograph or diagram of metaphases chromosomes of an organism arranged in homologous pair according to their length, thickness and position of centromere, length of arm, shape and other characteristics. The sex chromosomes are usually placed at the end.

Test: Cell: The Unit of Life - 2 - Question 21

The eukaryotic ribosomes are of

Detailed Solution for Test: Cell: The Unit of Life - 2 - Question 21

The eukaryotic ribosomes are 80S while the prokaryotic ribosomes are 70S. Here ‘S’ stands for the sedimentation coefficient; it indirectly is a measure of density and size.

Test: Cell: The Unit of Life - 2 - Question 22

The process of movement of few ions or molecules across the membrane against a concentration gradient from lower to higher  concentration, it is called

Detailed Solution for Test: Cell: The Unit of Life - 2 - Question 22

Active transport is the movement of molecules or ions against a concentration gradient (from an area of lower to higher concentration), which does not ordinarily occur, so enzymes and energy are required.

Test: Cell: The Unit of Life - 2 - Question 23

Proteins synthesized by ribosomes on the endoplasmic reticulum are modified in

Detailed Solution for Test: Cell: The Unit of Life - 2 - Question 23

The number of proteins synthesised by ribosomes on the endoplasmic reticulum are modified in the cisternae of the golgiapparatus .

Test: Cell: The Unit of Life - 2 - Question 24

Identify the incorrect statement regarding mitochondria:

Detailed Solution for Test: Cell: The Unit of Life - 2 - Question 24

The inner membrane forms a number of infoldings called the cristae
They produce cellular energy in the form of ATP, hence they are called ‘power houses’ of the cell. The matrix also possesses single circular DNA molecule, a few RNA molecules, ribosomes (70S) and the components required for the synthesis of proteins. The mitochondria divide by fission.

Test: Cell: The Unit of Life - 2 - Question 25

The given diagram:

I. shows the diagramatic reresentation of the ultra-structure of centriole
II.shows the 9 + 2 arrangement of the axeonemal microtubules of the cilia/fragella

Detailed Solution for Test: Cell: The Unit of Life - 2 - Question 25

9 + 2 arrangement of the axonemal microtubules of cilia/flagella 

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