Tag: cell structure and micro-organisms

Questions Related to cell structure and micro-organisms

Which of the following feature will help you in distinguishing a plant cell from an animal cell?

bio-chemistry cell structure and micro-organisms animal cells vs plant cells comparing plant and animal cells comparison between animal and plant cell

  1. Cell wall

  2. Cell membrane

  3. Mitochondria

  4. Nucleus

Show answer
Correct Option: A
Explanation:

The cell wall is hard organelle found outside the cell membrane and is composed of cellulose. The outermost layer of animal cells is plasma membrane. The cell wall is absent in the animal cell.

So, the correct answer is option A.

Give one key difference between:

Plant cell and animal cell

bio-chemistry cell structure and micro-organisms animal cells vs plant cells comparing plant and animal cells comparison between animal and plant cell

  1. Cell wall is absent in plant cell and present in animal cell.

  2. Cell wall is present in plant cell and absent in animal cell.

  3. Choloroplast is absent in plant cell and present in animal cell.

  4. Vacuole is absent is plant cell and present in animal cell.

Show answer
Correct Option: B
Explanation:

The plant cell and animal cell differ fundamentally from each other on the basis of the cell wall. The plant cells are surrounded by the cellulosic cell wall while the animal cells lack the cell wall. Apart from the cell wall, the plant cells show the presence of the plastids while the animal cells lack the plastids. Also, there is a large central vacuole present in plant cells while the animal cells either lack the vacuole or there can be many small vacuoles.


Hence, the correct answer is 'Cell wall is present in plant cell and absent in animal cell'.

Which of following structure is NOT found in plant cells?

bio-chemistry cell structure and micro-organisms animal cells vs plant cells comparing plant and animal cells comparison between animal and plant cell

  1. Vacuole

  2. Nucleus

  3. Centriole

  4. Golgi bodies

Show answer
Correct Option: C
Explanation:
While both animal and plant cells have microtubule organizing centres (MTOCs), animal cells also have centrioles associated with the microtubule-organizing centre ( MTOC): a complex called the centrosome. Animal cells each have a centrosome and lysosomes, whereas plant cells do not.
So, the correct answer is 'Centriole'.

Which of the following organelles would not be found in a plant cell?

bio-chemistry cell structure and micro-organisms animal cells vs plant cells comparing plant and animal cells comparison between animal and plant cell

  1. Chloroplast

  2. Vacuole

  3. Centrioles

  4. Cell membrane

Show answer
Correct Option: C
Explanation:

All are organelles of plant cells except centrioles. Centrioles only found in animal cells. It involves in the formation of spindle fibres during the cell division to separate chromosomes. Thus, the correct answer is option C.

____________  is the spread of disease from animal to a person.

zoology cell structure and micro-organisms health introduction to health health and its maintenance

  1. Non-communicable

  2. Endemic

  3. Communicable

  4. Pandemic

Show answer
Correct Option: C
Explanation:

Communicable diseases spread from one person to another or from an animal to a person. The spread often happens via airborne viruses or bacteria, but also through blood or other bodily fluid. The terms infectious and contagious are also used to describe communicable disease. For example- HIV/AIDS. 

The largest biological cell is often cited as the .......... egg. 

biology cell structure and micro-organisms cell theory microscope cell and its discovery

  1. Human 

  2. Bird 

  3. Ostrich

  4. Snake

Show answer
Correct Option: C
Explanation:

The egg is the single- celled structure. The egg of an ostrich is the largest cell in the world and it measures up to 15 to 17 cm.

The largest cell measuring 170 mm X 130 mm, is the egg of

biology cell structure and micro-organisms cell theory microscope cell and its discovery

  1. Ostrich

  2. Snake

  3. Human

  4. Shark

Show answer
Correct Option: A
Explanation:

The cell is the structural unit of life and its size ranges from 0.5 micrometers to 100 micrometers. An egg of ostrich is a single-celled structure and is known as the largest cell. The size of each ostrich egg is 170 mm X 130 mm. Thus, the correct answer is option A.

The .......... is the largest cell in the human body.

biology cell structure and micro-organisms cell theory microscope cell and its discovery

  1. RBCs

  2. WBCs

  3. Ovum 

  4. Sperm

Show answer
Correct Option: C
Explanation:

The human egg (ovum) is the largest cell in the body and can be seen without the aid of a microscope. It is one millimeter in diameter. Whereas, a nerve cell is the longest cell in human body.

The first person to see a living cell under the microscope was__________ 

botany cell structure and micro-organisms cell theory microscope cell and its discovery

  1. M.J. Schleiden

  2. Schwann

  3. Antonie Van Leeuwenhoek

  4. Robert Hook

Show answer
Correct Option: C
Explanation:
  • The first person to see a living cell under the microscope was Antonie van Leeuwenhoek. 
  • He called that cell as animalcule. He is commonly known as "the Father of Microbiology", and considered to be the first microbiologist. 

Cell lineage theory proposed by ___________________

botany cell structure and micro-organisms cell theory microscope cell and its discovery

  1. Schleiden

  2. Schwann

  3. Rudolph Virchow

  4. Hooke

Show answer
Correct Option: C
Explanation:
  • The cell is the basic structural and functional unit of life. Schleiden proposed that new cells arise from within the old cells, especially from the nucleus. 
  • This was corrected by Rudolf Virchow who proposed, "Theory of cell lineage" it states that all cells arise from pre-existing cells.