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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 851. |
Organelle involved in modification and routing of newly synthesised proteins to their destination isA. chloroplastB. mitochondriaC. lysosomeD. endoplasmic reticulum |
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Answer» Correct Answer - D Porter coined the name Endoplasmic Reticulum (ER). It is a network of tubules, vesicles andcisternae within an eukaryotic cell (absent inprokaryotic cells). Two types of ER are recognisedon the basis of presence/absence of ribosomes on the wall of the ER. (i) Smooth ER It does not have ribosomes. Smooth ER helps in the synthesis of lipid and glycogen. (ii) Rough ER Wall of this ER contains ribosomes.Rough ER is involved in protein synthesis andtransfer. Protein synthesis takes place in ribosomes attachedon wall of ER. Newly formed protein enters withinthe cavity of rough ER and follows following path : Protein `to` Cavity of rough ER `to` Cavity of smoothER `to` Golgi membrane `to` Lysosomes or transport vesicles or secretory granules. |
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| 852. |
Organelle involved in modification and routing of newly synthesised proteins to their destination isA. mitochondriaB. endoplasmic reticulumC. lysosomeD. chloroplast |
| Answer» Correct Answer - B | |
| 853. |
Whch of these is mismatched?A. Amyloplasts-Store protein granulesB. Elaioplasts-store oils or fatsC. Chloroplasts-Contain chlorophyll pigmentsD. Chromoplasts-Contain coloured pigment other than chlorophyll |
| Answer» Correct Answer - A | |
| 854. |
Many ribosomes may associate with a single mRNA to form mutiple copies of a poolypeptide simultaneously. Such strings of ribosomes are termed asA. PolysomeB. Polyhedral bodiesC. PlastidomeD. Nucleosome |
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Answer» Correct Answer - A Many ribosomes may associate with a single mRNA to form mutliple copies of a polypeptide simultaneously. Such strings of ribosomes are termed as polysome/polyribosome. |
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| 855. |
Several ribosomes may attach to a single mRNA and form a chain calledA. PolysomeB. PlolyribosomeC. PhagosomeD. Both A and B |
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Answer» Correct Answer - D Several ribosomes may attach to a single mRNA and form a chain called polysome or polyribosome. |
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| 856. |
The cell as a basic unit of structure of living things was discovered byA. schleiden and SchwannB. MendelC. Robert HookeD. Aristotle |
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Answer» Correct Answer - C The cell as a basic unit of structure of living things was discovered by Robert Hooke. |
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| 857. |
Identify the incorrect statement.A. Glycoprotein and glycolipids of plasma membrane facilitate cellular recognition and adhesionB. the semipermeable membrane surrounding the vacuole is called tonoplastC. gametes of plants are without cell walD. ingestion of solid particles is called pinocytosis |
| Answer» Correct Answer - D | |
| 858. |
A structure found traversing the cells and discovered by porter, claude and fulham in 1945 is theA. Golgi apparatusB. MitochondriaC. endoplasmic reticulumD. lysosomes |
| Answer» Correct Answer - C | |
| 859. |
Which one of the following is not a constituent of cell membraneA. CholesterolB. GlycolipidsC. ProlineD. Phospholipids |
| Answer» Correct Answer - C | |
| 860. |
Cellular organelles with membranes areA. Lysosmes, Golgi apparaus and mitochondriaB. Nuclei, ribosomes and mitochondriaC. Chromosomes, ribsosmes and endoplasmic reticulumD. Endoplasmic reticulum, ribosomes and nuclei |
| Answer» Correct Answer - A | |
| 861. |
Ingestion of solid food by plasma membranes is calledA. EndosmosisB. PinocytosisC. CytokinesisD. Phagocytosis |
| Answer» Correct Answer - D | |
| 862. |
Which one of the following is not found in animal cell?A. NucleusB. Golgi bodiesC. ChloroplastD. Mitochondria |
| Answer» Correct Answer - C | |
| 863. |
Unit membrane consists ofA. Lipid + Sugar + LipidB. Protein + Lipid + ProteinC. Lipid + Protein + LipidD. Protein |
| Answer» Correct Answer - B | |
| 864. |
The length of DNA molecile greatly exceeds the dimensions of the nucleus in eukaryotic cell. How is this DNA accommodatedA. Deletion of non-essential genesB. Supper-coiling in nucleosomesC. DNase digestionD. Through elimination of repetitive DNA |
| Answer» Correct Answer - B | |
| 865. |
Salivary gland chromosomes are also known asA. polytene chromosomesB. L-chromosomesC. lampbrush chromosomesD. autosomes |
| Answer» Correct Answer - A | |
| 866. |
Which one of these is not a eukaryote ?A. EuglenaB. AnabenaC. SpirogyraD. Agaricus |
| Answer» Correct Answer - b | |
| 867. |
Ribosomes are the centre forA. respirationB. photosynthesisC. protein synthesisD. fat synthesis |
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Answer» Correct Answer - C Ribosomes are smallest , membraneless sub-microscopic organelles , called as protein factories . They act as a template , bringing together different components involved in the protein synthesis. |
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| 868. |
What is the control centre of a cell ? |
| Answer» Correct Answer - Nucleus. | |
| 869. |
Mention three cell organelles viisble under a light microscope. |
| Answer» Mitochondria, Golgi apparatus, centrosome. | |
| 870. |
Which one of these is not a eukaryote ?A. EuglenaB. AnabaenaC. SpirogyraD. Agaricus |
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Answer» In above question, Anabaena is the only organism that is not an eukaryote and only possess prokaryotic characteristic features. i.e., absence of membrane bound organelles and undefined nucleus. Whereas, Euglena, Spirogyra and Agaricus are eukaryotes, possessing membrane bound organelles as mitochondria and nucleus (well defined). |
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| 871. |
What are eukaryotes ? Cite a few examples. |
| Answer» Organisms with an organized nucleus, Amoeba, plants. | |
| 872. |
Which of the following features is common to prokaryotes and many eukaryotes?A. chromosomes presentB. cell wall presentC. nuclear membrane presentD. subcellular organelles present |
| Answer» Correct Answer - B | |
| 873. |
Which of the following features is common to prokaryotes and rnany eukaryotes?A. Chromatin meterial presentB. Cell wall presentC. Nuclear membrane presentD. Membrane bound sub-cellular organelles present |
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Answer» Correct Answer - B Presence of cell wall is the common feature thot is observod in both prokaryotic and some eukmyotic cells Cell wall is present in bacteria (prokaryotes) and in plants (eukaryotes) however cell wall is absent in animal cells. Cell wall acts as protection unit for cell and also provides shape to the cell. Cell wall is made up of cellular, hemicellulose or pectins. The genetic material in prokaryotes is naked and not enveloped by nuclear membrane. Chromatin material is present in eukaryotes only. Sub-cellular organelles in prokaryotes are not well defined and are not membrane bound while eukaryotes have membranous organelles which are complex structures with multifunctions. |
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| 874. |
Which of the following features is common to prokaryotes and many eukaryotesA. Chromosomes presentB. Cell wall presentC. Nuclear membrane presentD. Sub cellular organelles present |
| Answer» Correct Answer - b | |
| 875. |
The membrane of the thylakoids enclose a space called aA. LumenB. StromaC. MatrixD. Grana |
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Answer» Correct Answer - A The membrane of the thylakoids enclose a space called a lumen. |
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| 876. |
What is a mesosome in a prokaryotic cell? Mention the functions that it performs. |
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Answer» Mesosome is a convoluted membranous structure formed in a prokaryotic cell by the invagination of the plasma membrane. Its functions are as follows: These extensions help in the synthesis of the cell wall, replication of DNA. They also help in the equal distribution of chromosomes into the daughter cells. It also increases the surface area of the plasma membrane to carry out various enzymatic activities. It helps in secretion processes as well as in bacterial respiration. |
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| 877. |
Mesosomes of prokaryotes are functionally similar toA. PeroxisomesB. LysosomesC. MitochondriaD. Ribosomes |
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Answer» Correct Answer - C Mesosomes of prokaryotes are functionally similar to mitochondria. |
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| 878. |
Which of the following is incorrect for mesosomes ?A. Mesosomes are formed by the extensions of plasma membrane into the cell in the form of vesicles, tubules and lamellae.B. They help in respiration , secretion process , to increase the surface area of the plasma membrane and enzymatic content.C. They help in the cell wall formation, DNA replication and distribution to daughter cells.D. None of the above. |
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Answer» Correct Answer - D * Mesosomes are formed by the extensions of plasma membrane into the cell in the form of vesicles, tubules and lamellae. * They help in respiration, secretion process, to increase the surface area of the plasma membrane and enzymatic content * They help in the cell wall formation, DNA replication and distribution to daughter cells |
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| 879. |
What is a mesosomes in a prokaryotic cell ? Mention the functions that it performs. |
| Answer» mesosomes are the infolds of cell membrane in certain prokaryotic cells (some bacteria, e.g.., Bacillus subtilis). Mesosomes bear respiratory enzymes. | |
| 880. |
Which molecules function as the name tags of cells ? Give their role also. |
| Answer» Glycoprotein molecules, they help distinguish between similar cells or molecules (self) and foreign cells or molecules (nonself). | |
| 881. |
Match the followingColumn IColumn II(a) Cristae1. Flat membranous sacs in stroma(b) Cisternae2. Inflodings in mitochondria(c) Thylakoids3. Disc-shaped sacs in Golgi apparatus |
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Answer» (a) → 2,(b)→ 3,(c)→ 1. |
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| 882. |
Match the following `{:("Column I","Column II"),("(a)Cristae", "(i)Flat membranous sacs in stroma"),("(b)Cisternae","(ii)Infoldings in mitochondria"),("(c ) Thylakoids","(iii)Disc-shaped sacs in Golgi apparatus "):}` |
| Answer» (a) (ii) , (b) (iii) , (c) (i) | |
| 883. |
Which of the following is not found in animal cell (a) Lysosome (b) Gogli body (c) Plastid (d) Nucleosome |
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Answer» Plastid is not found in animal cell |
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| 884. |
Fill in the blanks1. Nuclear membrane is not found in ……….. cells. 2. The largest cell is the egg of an …………. . 3. The nerve cells carry …………. from one place to another. 4. The fluid present between the cell membrane and the nucleus is called ………….. . 5. Golgi body was first described by …… |
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Answer» 1. Prokaryotic 2. Ostrich 3. Signals 4. Cytoplasm 5. Camillio Golgi |
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| 885. |
A group of similar cells performing a specific function is called(a) Organ (b) Cell (c) System (d) Tissue |
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Answer» A group of similar cells performing a specific function is called Tissue. |
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| 886. |
What are the differences between animal cell and plant cell? |
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Answer» Differences between animal cell and plant cell :
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| 887. |
Fill in the blanks 1. Thread like structures found in the nucleus are called ………… 2. Amoeba is a ……….. organism.3. An organism made up of more than one cell is called ………….. organism. 4. Nerve cells are …………… and ……… |
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Answer» 1. chromosomes 2. unicellular 3. multi – cellular 4. long, branched |
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| 888. |
Cell theory was proposed byA. Robertt HookeB. Schlieden and SchwannC. HaeckelD. Virchow |
| Answer» Correct Answer - B | |
| 889. |
Define the term Suicidal Bag? |
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Answer» During disturbances in cellular metabolism i.e., in case of cell damage, lysosomes burst and their enzymes are released into the cytoplasm and they digest their own cell. So they are also called ‘Suicidal Bag’. |
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| 890. |
What is the difference between prokaryotic and eukaryotic cell? |
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Answer» Difference between prokaryotic and Eukaryotic cell :
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| 891. |
DNA is found inA. nucleus onlyB. mitohondria onlyC. plastids onyD. all the above organelles |
| Answer» Correct Answer - D | |
| 892. |
Prokaryotic cells containA. ribosomesB. nucleoidC. mitochondriaD. Golgi apparatus |
| Answer» Correct Answer - A::B | |
| 893. |
Why lysosome is known as suicidal bag? |
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Answer» When the cell gets injured or is dead, then the lysosomes rupture and the digestive enzymes digest their own cell. That is why, they are called suicidal bags. |
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| 894. |
Kitchen of the cell isA. Endoplasmic reticulumB. ChloroplastC. MitochondriaD. Golgi complex |
| Answer» Correct Answer - B | |
| 895. |
In the cell , lipid molecules are synthesized byA. plastidsB. rough endoplasmic reticulumC. Golgi complexD. smooth endoplasmic reticulum |
| Answer» Correct Answer - D | |
| 896. |
Various types of cells are found in our body. What is their shape? |
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Answer» Some cells are round and flat. Some are long and spindle shaped and some are quite long and branched. |
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| 897. |
Why mitochondria is called the power house of the cell? |
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Answer» Biological energy ATP is produced in the mitochondria. That is why, it is called the power house of the cell. |
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| 898. |
Name the chemical substance used in cheek cell lab activity. |
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Answer» Methylene blue is the chemical substance used in cheek cell lab activity. |
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| 899. |
Rough endoplasmic reticulum is associated withA. Fat synthesisB. Steroid synthesisC. Protein synthesisD. All of these |
| Answer» Correct Answer - C | |
| 900. |
Smooth endoplasmic reticulum plays a crucial role inA. synthesizing lipidsB. starch synthesisC. detoxifying poisons and drugsD. ATP synthesis |
| Answer» Correct Answer - A::C | |