1071 + Interview Questions in CELL IN GENERAL AWARENESS Page 11 InterviewSolution

501.	A common characteristic feature of plant sieve tube cells and most of mammalian erythrocytes is theA. absence of mitochondriaB. presence of cell wallC. presence of haemoglobinD. absence of nucleus
Answer» Correct Answer - D

Discussion

502.	Name the cell organelles without a limiting membrane.
Answer» Ribosomes, centrioles, basal bodies, microtubules, microfilaments, intermediate fibres and nucleolus.

Discussion

503.	Name a few exchange pumps a cell membrane has.
Answer» Sodium-potassium exchange pump, calcium pump, `K^(+)-H^(+)` exchange pump (guard cells).

Discussion

504.	A common characteristic feature of plant sieve tube cells and most of mammalian erythrocytes isA. absence of mitochondriaB. presence of cell wallC. presence of haemoglobinD. absence of nucleus
Answer» Correct Answer - a

Discussion

505.	In a plant cell, which pressure counters endomosis and which counters the turgor pressure ?
Answer» Turgor pressure counters endosmosis and is itself countered by the cell wall pressure.

Discussion

506.	Golgi apparatus in plant and invertebrate cells conissts of several separate units. What are these called ?
Answer» Correct Answer - Dictyosomes.

Discussion

507.	What is the true of fluid mosaic model?A. Phospholipid monalyer is present over protein layerB. Phospholipid bilayer is present over protein layerC. Protein embedded in phospholipid bilayerD. Phospholipid layer is sandwiched between two protein layers
Answer» Correct Answer - C According to Fluid mosaic model protein embedded in phospholipid bilayer.

Discussion

508.	Which is a prokaryote glant ?
Answer» Largest prokaryote is a rod-shaped bacterium, Epulopiscium fishelsoni. It is about `600mum` (over half a milimere) long and `80mum` wide . It lives as a symbiont in the gut of the brown sturgeon, a fish.

Discussion

509.	What is facilitated transport ? How does it help to transport mterials ?
Answer» Facilitated transport involves passive transport of materials using carrier proteins. The carrier proteins are knows as permeases. They pransport materials down the conc. Gradient without using cellular energy from one side of membrane to another through a channel formed in it.

Discussion

510.	Who discovered the nucleus ?
Answer» Correct Answer - Robert Brown

Discussion

511.	What is the composition of cell wall in prokaryotic cell and eukaryotic plant cell ?
Answer» In prokaryotes, cell wall consists of peptidoglycan that contains polymers of modified sugars (N-Acetyl glucosamine and N-acetyl muramic acid ) crosslinked with short peptides. In eukaryotic plant cell, cell wall is chiefly composed of insoluble polysaccharide, cellulose. Certain other compounds such as hemicellulose, pectin and proteins also occur in the cell wall.

Discussion

512.	Who coined the term cell ? What did he study ? What was his conclusion ?
Answer» Robert hooke coined the term cell. He studied thin slices of cork (dead bark of a spanish oak, Quercus) under a primitive microscope. Robert hooks saw only the dead walls of plant cells. These cells had lost their living contents and looked like small rooms. Hence, he called each compartment as cell.

Discussion

513.	Accoding to the modern concept of cellular membrances the structure of the cell membrane is as follows:A. There is a continuous lipid bilayer with interspersed proteins on the outside as well as some on the insideB. There is a continuous lipid layer with continuous protein layer on the insideC. There is a continuous lipid bilayer with continuous protein layer on the outsideD. Both (B) and (C )
Answer» Correct Answer - A According to the modern concept of cellular membrances, the structure of the cell membrane is that there is a continuous lipid bilayer with interspersed proteins on the outside as well as some on the inside.

Discussion

514.	What is homeostaiss ?
Answer» State of equilibrium regarding chemical composition and various functions in a cell or organism.

Discussion

515.	Give the most fundamental concept of cell biology.
Answer» Cell principle

Discussion

516.	Give the scope of cell biology.
Answer» Cell biology covers morphology, physiology, reproduction and chemistry of cell.

Discussion

517.	Robert Hooke used the terms cell in the yearA. 1650B. 1665C. 1865D. 1960
Answer» Correct Answer - B

Discussion

518.	In which tissue the cells were first seen and by whom and when ?
Answer» In a thin slice of cork tissue, the park of Spanish oak, Quercus , by Robert Hooke in 1665.

Discussion

519.	Which of the following is n execption to cell theory?A. AngiospermsB. WBCsC. VirusesD. Gymnosperms
Answer» Correct Answer - C

Discussion

520.	In view of the current status of our knownledge about the cell structure, which of the following statements about cell theory is correct?A. The cell theory needed modification due to discovery of subcellular structures such as chloroplasts and mitochondriaB. The cell theory does not hold good, since all living organisms are not cellular in their organisation, e.g., virusC. The cell theory in its modified form, mans that all living object are made of cells capable of redproducingD. The cell theory means that all living objects of cell, whether or not capable of reproducing
Answer» Correct Answer - C

Discussion

521.	Cell theory is not applicable forA. algaeB. fungiC. virusesD. lichens
Answer» Correct Answer - C

Discussion

522.	Who gave the unit membrane hypotheiss ?
Answer» J. David Robertson.

Discussion

523.	What is more tentative, hypotheiss or theory ? Who gave the cell theory ?
Answer» Hypothesis, Schleiden and Schwann.

Discussion

524.	Which organelle of plant cells secrets polysaccharide to make cell walls?A. Golgi-bodiesB. LysosomeC. MitochondriaD. Chloroplast
Answer» Correct Answer - A

Discussion

525.	A component of cytoskeleton isA. MicrotubuleB. BoneC. ChitinD. Cartilage
Answer» Correct Answer - A

Discussion

526.	Heteropycnosis is exhibited byA. AutosomeB. Chromatid bodyC. NucleolusD. Sex chromosome
Answer» Correct Answer - D

Discussion

527.	Observe the following figures.a) What common features do you see in both the cells?b) Which cell organelles are found exclusively in plant cell?
Answer» a) We can observe some common features in plant and animal cells. They both are having plasma membrane, mitochondria, golgi apparatus, endoplasmic reticulum, nucleus etc. b) Chloroplasts and big vacuoles are the cell organelles exclusively found in plant cell.

527.

Observe the following figures.a) What common features do you see in both the cells?b) Which cell organelles are found exclusively in plant cell?

Answer»

a) We can observe some common features in plant and animal cells. They both are having plasma membrane, mitochondria, golgi apparatus, endoplasmic reticulum, nucleus etc.

b) Chloroplasts and big vacuoles are the cell organelles exclusively found in plant cell.

Discussion

528.	Prepare different questions to know the discovery of cell.
Answer» 1. In which year cell discovered? 2 Name the scientist who observed cells.

528.

Prepare different questions to know the discovery of cell.

Answer»

1. In which year cell discovered?

2 Name the scientist who observed cells.

Discussion

529.	Make different questions to know cells and cell organelles.
Answer» 1. What are the structures present in the cells? 2. Why cells are considered to be structural and functional unit of life?

529.

Make different questions to know cells and cell organelles.

Answer»

1. What are the structures present in the cells?

2. Why cells are considered to be structural and functional unit of life?

Discussion

530.	What is the difference between cells in onion peel and cells in Spinach?
Answer» Cells in onion peel arranged systematically with prominent nucleus. Cells in spinach are in different sizes and shapes without nucleus to perform nutrition.

Discussion

531.	Which part of cell contains cell organelles?
Answer» The jelly like substance between the nucleus and cell membrane is called cytoplasm. It is a heterogeneous material. It contains membrane bound structures called cell organelles.

Discussion

532.	Who discovered cell first time?
Answer» It was the year 1665 Robert Hooke, a British scientist discovered the cell.

Discussion

533.	Assertion. Muscle and nerve cells greatly differ in structure and function. Reason. They contain different genetic information.A. If both Assertion and Reason are true and Reason is the correct explanation of Assertion.B. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.C. If Assertion is true but Reason is false.D. If both Assertion and Reason are false.
Answer» Correct Answer - C

Discussion

534.	The plants which we can observe more chloroplasts are : A) Algae B) Fungi C) Bacteria D) None
Answer» Correct option is A) Algae

Discussion

535.	Read the following statements. a) Cell wall is made up of cellulose and it is dead in nature. b) Plasma membrane is made up of lipids and proteins and it is living. A) Both a, b incorrect B) a correct, b incorrect C) b correct, a incorrect D) Both a, b correct
Answer» D) Both a, b correct

Discussion

536.	Cell wall is made up mainly ofA) Glucose B) Fructose C) Maltose D) Cellulose
Answer» Correct option is D) Cellulose

Discussion

537.	Read the assertion and reason carefully to mark the correct option in question. 1. Assertion: Cell is the fundamental structural and functional unit of all living organisms. Reason: Anything less than a complete structure of a cell does not ensure independent living.A. If both assertion and reason are true and the reason is the correct explanation of the assertionB. If both assertion and reason are true but reason is not the correct explanation of the assertion.C. If assertion is true but reason is false.D. If both assertion and reason are false.
Answer» Correct Answer - A Cell is the fundamental structural and functional unit of all living organisma because anything less than a complete structure of a cell does not ensure independent living.

Discussion

538.	Peptide synthesis inside a cell takes place inA. ChloroplastB. MitochondriaC. ChromoplastD. Ribosomes
Answer» Correct Answer - D

Discussion

539.	Which one of the following also acts as a catalyst in a bacterial cell ?A. sn RNAB. hn RNAC. 23S r RNAD. 5S r RNA
Answer» Correct Answer - C 23S rRNA in bacteria is the enzyme ribozyrne for the formation of peptide bond. 23S rRNA is found m large sub-unit (70S) of ribosome of bacteria.

Discussion

540.	What is the structural element of cell wallA. matrixB. microtubulesC. microfibrilsD. arabinoglactane
Answer» Correct Answer - D

Discussion

541.	Peptide synthesis inside a cell takes place inA. mitochondriaB. chromoplastC. ribosomesD. chloroplast
Answer» Correct Answer - C The cellulai factory responsible for synthesising proteins (peptide synthesis) is the ribosome.

Discussion

542.	Which one of the following has its own DNA?A. mitochondriaB. DictyosomeC. LysosomeD. Peroxisome
Answer» Correct Answer - A In mitochondria , the inner membrane space is filled with a matrix which contains dense granules along with ribosomes and mitochondrial . DNA . The mitochondrial DNA is circular in nature . Their number varies from 2-6 Besides DNA , a mitochondrion has RNA and its ribosomes (70S) also . Thus a complete protein synthesising machinery is present in mitochondria , so mitochondria is semi autonomous organelle in nature . Dictyosome , lysosome and peroxisome do not have their own DNA .

Discussion

543.	Which one of the following has its own DNA ?A. PeroxisomeB. MitochondriaC. DictyosomeD. Lysosome
Answer» Correct Answer - B

Discussion

544.	Why the colouring fruits or vegetables changes? Support your answer.
Answer» In plants plastids are responsible for the colouring of fruits and vegetables. There are 3 types of plastids present in plants. Chloroplasts are responsible for green colour. Chromoplasts are responsible for different colours, i.e., orange, yellow, red etc. Leucoplasts are responsible for white colour. These plastids have the capacity to change from one form to another. E.g. : Young tomatoes are white in colour as they mature they turn to green and then to red in colour.

Discussion

545.	Who and when was “The cell theory” proposed? When did they prepare it? What are its salient features?
Answer» M.J. Schleiden and Theodar Schwann proposed “The cell theory”. They prepared it in 1838 – 39. Statements of modern form of cell theory : 1. All the living organisms are made up of cells and their products. 2. All the cells are formed from pre-existing cells. 3. All the cells are made up of similar chemicals and show similar metabolic activities. 4. Functioning of an organism depends on the functions carried out and the interaction of different cells present in the organism.

545.

Who and when was “The cell theory” proposed? When did they prepare it? What are its salient features?

Answer»

M.J. Schleiden and Theodar Schwann proposed “The cell theory”. They prepared it in 1838 – 39.

Statements of modern form of cell theory :

1. All the living organisms are made up of cells and their products.

2. All the cells are formed from pre-existing cells.

3. All the cells are made up of similar chemicals and show similar metabolic activities.

4. Functioning of an organism depends on the functions carried out and the interaction of different cells present in the organism.

Discussion

546.	In what way different colours in flowers helpful to bio-diversity?
Answer» We can easily identify their species at a glance. By having different colours plants attracts insects for pollination, for their propagation. By having different colours plants appeal to the aesthetic sense of man, immense pleasure and happiness. This is useful in the propagation of plants by the human beings. Generally butterflies are known as the pollinators, but in fact they are the indicators of the health of an ecosystem.

Discussion

547.	Cells were first discovered byA. Robert brownB. Robert hookeC. PurkinjiD. Schleiden and Schwann
Answer» Correct Answer - B

Discussion

548.	Lysosomes are formed by theA. nucluesB. mitochondriaC. Golgi apparatusD. centriole
Answer» Correct Answer - C

Discussion

549.	Mention the cell organell that is called “Protein factories”.
Answer» Ribosomes is the cell organell that is called “Protein factories”.

Discussion

550.	Can you guess the total number of cells in our body?
Answer» Yes, there are billions of cells in our body.

Discussion

Explore topic-wise InterviewSolutions in .

A common characteristic feature of plant sieve tube cells and most of mammalian erythrocytes is theA. absence of mitochondriaB. presence of cell wallC. presence of haemoglobinD. absence of nucleus

Name the cell organelles without a limiting membrane.

Name a few exchange pumps a cell membrane has.

A common characteristic feature of plant sieve tube cells and most of mammalian erythrocytes isA. absence of mitochondriaB. presence of cell wallC. presence of haemoglobinD. absence of nucleus

In a plant cell, which pressure counters endomosis and which counters the turgor pressure ?

Golgi apparatus in plant and invertebrate cells conissts of several separate units. What are these called ?

What is the true of fluid mosaic model?A. Phospholipid monalyer is present over protein layerB. Phospholipid bilayer is present over protein layerC. Protein embedded in phospholipid bilayerD. Phospholipid layer is sandwiched between two protein layers

Which is a prokaryote glant ?

What is facilitated transport ? How does it help to transport mterials ?

Who discovered the nucleus ?

What is the composition of cell wall in prokaryotic cell and eukaryotic plant cell ?

Who coined the term cell ? What did he study ? What was his conclusion ?

What is homeostaiss ?

Give the most fundamental concept of cell biology.

Give the scope of cell biology.

Robert Hooke used the terms cell in the yearA. 1650B. 1665C. 1865D. 1960

In which tissue the cells were first seen and by whom and when ?

Which of the following is n execption to cell theory?A. AngiospermsB. WBCsC. VirusesD. Gymnosperms

Cell theory is not applicable forA. algaeB. fungiC. virusesD. lichens

Who gave the unit membrane hypotheiss ?

What is more tentative, hypotheiss or theory ? Who gave the cell theory ?

Which organelle of plant cells secrets polysaccharide to make cell walls?A. Golgi-bodiesB. LysosomeC. MitochondriaD. Chloroplast

A component of cytoskeleton isA. MicrotubuleB. BoneC. ChitinD. Cartilage

Heteropycnosis is exhibited byA. AutosomeB. Chromatid bodyC. NucleolusD. Sex chromosome

Observe the following figures.a) What common features do you see in both the cells?b) Which cell organelles are found exclusively in plant cell?

Prepare different questions to know the discovery of cell.

Make different questions to know cells and cell organelles.

What is the difference between cells in onion peel and cells in Spinach?

Which part of cell contains cell organelles?

Who discovered cell first time?

The plants which we can observe more chloroplasts are : A) Algae B) Fungi C) Bacteria D) None

Read the following statements. a) Cell wall is made up of cellulose and it is dead in nature. b) Plasma membrane is made up of lipids and proteins and it is living. A) Both a, b incorrect B) a correct, b incorrect C) b correct, a incorrect D) Both a, b correct

Cell wall is made up mainly ofA) Glucose B) Fructose C) Maltose D) Cellulose

Peptide synthesis inside a cell takes place inA. ChloroplastB. MitochondriaC. ChromoplastD. Ribosomes

Which one of the following also acts as a catalyst in a bacterial cell ?A. sn RNAB. hn RNAC. 23S r RNAD. 5S r RNA

What is the structural element of cell wallA. matrixB. microtubulesC. microfibrilsD. arabinoglactane

Peptide synthesis inside a cell takes place inA. mitochondriaB. chromoplastC. ribosomesD. chloroplast

Which one of the following has its own DNA?A. mitochondriaB. DictyosomeC. LysosomeD. Peroxisome

Which one of the following has its own DNA ?A. PeroxisomeB. MitochondriaC. DictyosomeD. Lysosome

Why the colouring fruits or vegetables changes? Support your answer.

Who and when was “The cell theory” proposed? When did they prepare it? What are its salient features?

In what way different colours in flowers helpful to bio-diversity?

Cells were first discovered byA. Robert brownB. Robert hookeC. PurkinjiD. Schleiden and Schwann

Lysosomes are formed by theA. nucluesB. mitochondriaC. Golgi apparatusD. centriole

Mention the cell organell that is called “Protein factories”.

Can you guess the total number of cells in our body?