NEET Questions from Cell The Unit of Life

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The cell is the basic structural, Functional, and Biological unit of life. They are also called “Building blocks of the life”. Study of cells is called Cell biology, Cellular biology, or cytoplasm. Most plants and animal cells are only visible under a light microscope, with dimensions between one and 100 micrometres.  When cell theory first developed, it stated that “All living organisms are composed of one or more cells and those cells are fundamental in all the organisms”.


Subcellular Components 

All cells either may be prokaryotic or eukaryotic. They have the envelope which covers the cell and regulates the movement of anything across the selectively permeable membrane. And it also helps to maintain the electric potential of the cell. In the cell membrane cytoplasm covers most of the cell volume. All cells have DNA, genes(heredity material), and RNA. This information is necessary to build various proteins such as enzymes and primary machinery.

Cells greatly differ in size, shape and activities. For example, Mycoplasmas are the smallest cells having a length of 0.3 micrometre and bacteria could be three to five micrometre. The largest isolated cell is the egg of an ostrich. Among all the multicellular organisms, human red blood cells are about seven micrometres in diameter. A nerve cell is the longest cell. Cells also vary in shape like round, elongated or spherical. 

Cells are Mainly Divided Into Two Types:

  • Prokaryotic cells: Prokaryotic cells are seen in bacteria and archaea. They were the first form of life seen on earth. Prokaryotic cells are simple and small compared to eukaryotic cells. Prokaryotic cells have three regions: Cell envelope (which encloses the cell from outside), Cytoplasmic region (inside the cell which contains genome), Flagella and pili (outside the cell's surface).

  • Eukaryotic cells: Eukaryotic cells are seen in higher organisms like plant, animal, fungi, slime, protozoa, and algae. Eukaryotic cells are much greater in size and volume compared to the prokaryotic cells. Most important cell organelles in a eukaryotic cell is a cell nucleus which houses the cell's DNA. After going through some basic concepts of cell unit of life NEET questions, we can answer some of these questions given below.

Cell unit of life NEET Questions

Some of the Important NEET questions on the cell the unit of life are:

 1. Difference between Eukaryotic and prokaryotic cells in having

  1. Cell wall

  2. Nuclear membrane 

  3. Ribosome 

  4. None of these

Answer. Option B

2. A major site for synthesis of lipids is

  1. RER

  2. SER

  3. Symplast

  4. Nucleoplasm

Answer- Option B

3.  Ribosomal RNA is actively synthesised in 

  1. Lysosomes

  2. Nucleolus

  3. Nucleoplasm

  4. Ribosomes

Answer- Nucleolus

4. How many types of cells are known 

  1. One 

  2. Two

  3. Three 

  4. Four

Answer. Three 

5. The longest cell of plants is found in 

  1. Victoria amazonica 

  2. Eucalyptus

  3. Boehmeria nivea 

  4. Sequoia 

Answer.  Boehmeria nivea

6. Which of the following is the exception of cell theory?

  1. Bacteria 

  2. Fungi 

  3. Viruses

  4. Lichen 

Answer. Viruses 

7. Which is the smallest living cell with cell walls?

  1. Viroids 

  2. Bacteria 

  3. Algae 

  4. Mycoplasma 

Answer. Bacteria 

8. Which branch deals with the study of cell structure and function?

  1. Histology 

  2. Ecology 

  3. Morphology 

  4. Cytology 

Answer. Cytology 

9. Which of the following is Prokaryote 

  1. Agaricus 

  2. Green algae 

  3. Salmonella 

  4. Bacteriophage

Answer. Salmonella 

10. The cell was discovered by 

  1. Grew 

  2. Brown 

  3. Robert Hooke 

  4. Darwin 

Answer. Robert Hooke


Conclusion 

After going through the above NEET questions on cell - the unit of life, it will be easy to answer other questions related to the cell. NEET question cell the unit of life is one of the important topics in Biology. These MCQ questions will help the NEET and other competitive exam aspirants to guess the type of questions can be asked on this topic.

FAQ (Frequently Asked Questions)

1. The Cell is the Basic Unit of Life - Who Has Proposed it?

Answer. Theodor Schwann proposed the cell theory in 1839. There are three main parts of this theory: The first part states that all the organisms are made up of cells. Second is, Cell is the basic unit of life. The third is, Cells come from preexisting cells which have multiplied.


2. Why is a Cell Called a Basic Unit of Life?

Answer. Cells are called the basic unit of life as all the organisms are made up of cells. As they are the basic structural and functional unit of life.


3. What are the Ten Levels of Organization in Living Things?

Answer. The level of organization of living things ranges from single organelle to the biosphere in a highly structured hierarchy. Living things are highly organized and structured, which can be examined on a scale from small to large following the hierarchy. 


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