Cell: The Unit of Life PYQs

Which one of the following is the site for active ribosomal RNA synthesis?

Non-membrane bound cell organelles found in both prokaryotic and eukaryotic cells are ______.

Choose the correct statements regarding cell organelles and their inclusions: A. The endomembrane system includes Golgi complex, endoplasmic reticulum and mitochondria. B. Rough endoplasmic reticulum bears ribosomes on its surface. C. Both mitochondria and plastids have circular DNA. D. A network of microtubules, microfilaments and intermediate filaments present in the cytoplasm is called cytoskeleton. E. Mitochondrion is a single membrane-bound structure. Choose the correct answer from the options given below :

Select the correct statements regarding cell membrane in eukaryotic cells: A. Membrane of human RBCs has approximately 52% protein. B. Major phospholipids are arranged in a bilayer. C. Extensions of plasma membrane into the cell form mesosomes. D. Tails towards the inner part of lipids are hydrophobic and thus protected from aqueous medium. E. Glycocalyx is present on the outer surface of the plasma membrane. Choose the correct answer from the options given below :

The complex II of mitochondrial electron transport chain is also known as

Which one of the following statements refers to Reductionist Biology?

From the statements given below choose the correct option: A. The eukaryotic ribosomes are 80S and prokaryotic ribosomes are 70S. B. Each ribosome has two sub-units. C. The two sub-units of 80S ribosome are 60S and 40S while that of 70S are 50S and 30S. D. The two sub-units of 80S ribosome are 60S and 20S and that of 70S are 50S and 20S. E. The two sub-units of 80S are 60S and 30S and that of 70S are 50S and 30S.

Match List - I with List - II. Choose the correct answer from the options given below:

A specialised membranous structure in a prokaryotic cell which helps in cell wall formation, DNA replication and respiration is :

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : The primary function of the Golgi apparatus is to package the materials made by the endoplasmic reticulum and deliver it to intracellular targets and outside the cell. Reason (R) : Vesicles containing materials made by the endoplasmic reticulum fuse with the cis face of the Golgi apparatus, and they are modified and released from the trans face of the Golgi apparatus. In the light of the above statements, choose the correct answer from the options given below :

What is the main function of the spindle fibers during mitosis ?

The lactose present in the growth medium of bacteria is transported to the cell by the action of:

Match List I with List II Choose the correct answer from the options below:

Spindle fibers attach to kinetochores of chromosomes during

The DNA present in chloroplast is:

Match List I with List II Choose the correct answer from the options given below:

Match List I with List II : Choose the correct answer from the options given below:

Given below are two statements : Statement I : Mitochondria and chloroplasts are both double membrane bound organelles. Statement II : Inner membrane of mitochondria is relatively less permeable, as compared to chloroplast. In the light of the above statements, choose the most appropriate answer from the options given below :

The process of appearance of recombination nodules occurs at which sub stage of prophase I in meiosis?

Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R : Assertion A : ATP is used at two steps in glycolysis. Reason R : First ATP is used in converting glucose into glucose-6-phosphate and second ATP is used in conversion of fructose-6-phosphate into fructose-1-6-diphosphate. In the light of the above statements, choose the correct answer from the options given below :

How many different proteins does the ribosome consist of?

Match List I with List II : Choose the correct answer from the options given below :

Which of the following are NOT considered as the part of endomembrane system? A. Mitochondria B. Endoplasmic Reticulum C. Chloroplasts D. Golgi complex E. Peroxisomes Choose the most appropriate answer from the options given below:

Given below are two statements: Statement I: In prokaryotes, the positively charged DNA is held with some negatively charged proteins in a region called nucleoid. Statement II: In eukaryotes, the negatively charged DNA is wrapped around the positively charged histone octamer to form nucleosome. In the light of the above statements, choose the correct answer from the options given below:

Which of the following functions is carried out by cytoskeleton in a cell?

Read the following statements and choose the set of correct statements: (a) Euchromatin is loosely packed chromatin (b) Heterochromatin is transcriptionally active (c) Histone octomer is wrapped by negatively charged DNA in nucleosome (d) Histones are rich in lysine and arginine (e) A typical nucleosome contains 400 bp of DNA helix Choose the correct answer from the options given below:

Which of the following statements with respect to Endoplasmic Reticulum is incorrect?

Which of the following is an incorrect statement?

Match List-I with List-II. Choose the correct answer from the options given below:

When the centromere is situated in the middle of two equal arms of chromosomes, the chromosome is referred as:

Which of the following are not secondary metabolites in plants?

The organelles that are included in the endomembrane system are:

Identify the types of cell junctions that help to stop leakage of substances across a tissue and facilitate communication with neighbouring cells via rapid transfer of ions and molecules.

Which of the following statements about inclusion bodies is incorrect?

Which is the important site of formation of glycoproteins and glycolipids in eukaryotic cells?

Match the following with respect to meiosis: Select the correct option from the following.

Match the column I with column II. Choose the correct match from the options given below:

Which of the following cell organelles is present in the highest number in secretory cells?

Non-membranous nucleoplasmic structures in nucleus are the site for active synthesis of:

Which of the following nucleic acids is present in an organism having 70 S ribosomes only?

After meiosis I, the resultant daughter cells have:

The main difference between active and passive transport across cell membranes is:

Match the following cell structure with its characteristic: Select the correct option from the following:

Nissl bodies are mainly composed of:

Which of these statements is incorrect?

Which of the following events does not occur in rough endoplasmic reticulum?

Many ribosomes may associate with a single mRNA to form multiple copies of a polypeptide simultaneously. Such strings of ribosomes are termed as:

What is the role of NAD+ in cellular respiration?

The Golgi complex participates in:

Which of the following is true for nucleolus?

The association of histone H1 with a nucleosome indicates:

Which of the following RNAs should be most abundant in animal cell?

Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen?

Which of the following components provides sticky character to the bacterial cell?

Which of the following cell organelles is responsible for extracting energy from carbohydrates to form ATP?

Select the mismatch.

A cell organelle containing hydrolytic enzymes is

Which of the following rRNAs acts as structural RNA as well as ribozyme in bacteria?

Oxidative phosphorylation is

Which of the following structures is not found in prokaryotic cells?

Which of the following are not membrane-bound?

Cellular organelles with membranes are:

Cell wall is absent in:

A protoplast is a cell:

The function of the gap junction is to:

The structures that help some bacteria to attach to rocks and/or host tissues are:

Match the columns and identify the correct option:

Identify the correct order of organisation of genetic material from largest to smallest:

Balbiani rings are sites of:

Which structures perform the function of mitochondria in bacteria?

The solid linear cytoskeletal elements having a diameter of 6 nm and made up of a single type of monomer are known as:

The osmotic expansion of a cell kept in water is chiefly regulated by:

Match the following and select the correct answer:

Which of the following shows coiled RNA strand and capsomeres?

Viruses have:

The motile bacteria are able to move by:

Which one of the following statements is not correct?

A major site for synthesis of lipids is

The most abundant intracellular cation is

Which of the following criteria does not pertain to facilitated transport?

Which of the following is not correctly matched for the organism and its cell wall degrading enzyme?

The Golgi complex plays a major role

Which one of the following organelle in the figure correctly matches with its function?

Which one of the following cellular parts is correctly described?

Which one of the following structure is an organelle within an organelle?

The figure below shows the structure of a mitochondrion with its four parts labeled (A), (B), (C) and (D). Select the part correctly matched with its function.

In mitochondria, protons accumulate in the:

Which one of the following is not considered as a part of the endomembrane system?

Identify the components labelled A, B, C and D in the diagram below from the list (i) to (viii) given with. Components: (i) Cristae of mitochondria (ii) Inner membrane of mitochondria (iii) Cytoplasm (iv) Smooth endoplasmic reticulum (v) Rough endoplasmic reticulum (vi) Mitochondrial matrix (vii) Cell vacuole (viii) Nucleus The correct components are :

An elaborate network of filamentous proteinaceous structures present in the cytoplasm which helps in the maintenance of cell shape is called :

Plasmodesmata are:

Stroma in the chloroplast of higher plant contains:

Middle lamella is composed mainly of:

Cytoskeleton is made up of:

A change in the amount of yolk and its distribution in egg will effect:

There is no DNA in:

Vacuole in a plant cell

Polysome is formed by

Keeping in view the 'fluid mosaic model' for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other (described as flip-flop movement)?

The two sub-units of ribosome remain united at a critical ion level of

The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because

Write the location and function of Cytoskeleton.

Refer diagram. Write the functions of parts (1) and (2).

Refer diagram. Write the functions of parts (1) and (2).

Which of the following statements regarding mitochondrial membrane is not correct?

A major breakthrough in the studies of cells came with the development of electron microscope. This is because:

Which of the following statements regarding cilia is not correct?

The cell membranes are mainly composed of:

The main organelle involved in modification and routing of newly synthesized proteins to their destinations is:

A student wishes to study the cell structure under a light microscope having $10\times$ eyepiece and $45\times$ objective. He should illuminate the object by which one of the following colours of light so as to get the best possible resolution?

Chlorophyll in chloroplasts is located in:

According to widely accepted 'fluid mosaic model' cell membranes are semi-fluid, where lipids and integral proteins can diffuse randomly. In recent years, this model has been modified in several respects. In this regard, which of the following statements is incorrect?