Tag: bio-chemistry

Questions Related to bio-chemistry

In an animal cheek cell, the nucleus is generally located _________.

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

  1. In the centre of the cell

  2. On one side of the cell

  3. Near the plasma membrane

  4. Anywhere in the cell

Show answer
Correct Option: A
Explanation:

  • In an animal cheek cell, the nucleus is located at the center of the cytoplasm. They do not contain a cell wall and a prominent vacuole. Their cytoplasm is denser and granular than plant cells. 
  • In a plant cell, the nucleus is located towards the periphery of the cell due to the presence of large vacuole.
Thus, the correct answer is 'In the center of the cell.'

Which of the following is found in plant cells, but not in animal cells?

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

  1. Cell wall

  2. Nucleus

  3. Endoplasmic reticulum

  4. Mitochondria

Show answer
Correct Option: A
Explanation:
  • The cell wall is a unique structure present in plant cells. It is found as an outer covering to the plasma membrane. 
  • The cell wall is made up of cellulose, pectin, etc, according to whether it is seen in plants, fungi or bacteria.

What is the appropriate difference between plant cells and animal 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. Plant cell- cell wall is present, Animal cell- cell wall is absent

  2. Plant cell- cell wall is absent, Animal cell- cell wall is present

  3. Plant cell- cell wall is present, Animal cell- cell wall is present

  4. Plant cell- cell wall is absent, Animal cell- cell wall is absent

Show answer
Correct Option: A
Explanation:

Plant cell possesses a cell wall while animal cells lack. Plant cells possess chloroplasts while animal cells lack. Plant cells possess single, large vacuole while animal cells possess many, small vacuoles. Plant cells lack centriole while animal cells possess centriole. Thus, the correct answer is option A.

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.

Which is not a parasite of the human intestine ?

bio-chemistry digestive system of human role of intestine digestion in intestine digestive system - organs

  1. ringworm

  2. pinworm

  3. threadworm

  4. tapeworm

Show answer
Correct Option: A
Explanation:
They have long round bodies and range in size. Roundworms can live in or on humans and can cause many problems. They are usually found in soil and stool and can enter the body through the mouth or direct contact with the skin. They can live in the human intestine for a very long time. They are called normal Flora.
So the correct option is 'Ringworm'.

If the chyme is pushed backwards in small quantity, then it reaches to

bio-chemistry digestive system of human role of intestine digestion in intestine digestive system - organs

  1. Large intestine

  2. Duodenum

  3. Oesophagus

  4. Small intestine

Show answer
Correct Option: A

The term "Faeces" used for the undigested substances present in ___

bio-chemistry digestive system of human role of intestine digestion in intestine digestive system - organs

  1. $Caecum$

  2. $Colon$

  3. $Rectum$

  4. $Anus$

Show answer
Correct Option: A