Cell: The Unit of Life

Which of the following is not a feature of the plasmids?

Select the wrong statement

A cell organelle containing hydrolytic enzymes is

Mitochondria and chloroplast are: (i) Semi – autonomous organelles (ii) Formed by division of pre – existing organelles and they contain DNA but lack protein synthesizing machinery Which one of the following options is correct?

Spindle fibres attach on to:

Microtubules are the constituents of:

Which one of the following cell organelles is enclosed by a single membrane?

Which of the following statements is not correct?

Water soluble pigments found in plant cell vacuoles are:

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.

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

Which of the following is true for nucleolus?

Which among the following is not a prokaryote?

The Golgi complex participates in

Which of the following pair of organelles does not contain DNA?

The shorter and longer arms of a submetacentric chromosome are referred to as

Which of the following is an incorrect statement?

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

The concept of “Omnis cellula-e cellula” regarding cell division was first proposed by

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 70S ribosomes only ?

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

Which of the following statements regarding mitochondria is incorrect?

Match Column-I with Column-II: Column I (a) Golgi apparatus (b) Lysosomes (c) Vacuoles (d) Ribosomes Column II (i) Synthesis of protein (ii) Trap waste and excretory products (iii) Formation of glycoproteins and glycolipids (iv) Digesting biomolecules Choose the right match from the options given below:

Which of the following statements about inclusion bodies is not correct?

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

Match List-I with List-II: List I (a) Cristae (b) Thylakoid (c) Centromere (d) Cisternae List II (i) Primary constriction in chromosome (ii) Disc-shaped sacs in Golgi apparatus (iii) Infoldings in mitochondria (iv) Flattened membranous sacs in stroma of plastids Choose the correct answer from the options given below:

The organelles that are included in the endomembrane system are

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

Given below are two statements: Statement I: Mycoplasma can pass through less than 1 micron filter size. Statement II: Mycoplasma are bacteria with a cell wall. In the light of the above statements, choose the most appropriate 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:

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

Which of the following statements are correct with respect to Golgi apparatus? (A) It is the important site of formation of glycoprotein and glycolipids. (B) It produces cellular energy in the form of ATP. (C) It modifies the protein synthesized by ribosomes on ER. (D) It facilitates the transport of ions. (E) It provides mechanical support. Choose the most appropriate answer from the options given below :

How many different proteins does the ribosome consist of?

Movement and accumulation of ions across a membrane against their concentration gradient can be explained by

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:

Given below are two statements: Statement I : In bacteria, the mesosomes are formed by the extensions of plasma membrane. Statement II : The mesosomes, in bacteria, help in DNA replication and cell wall formation. In the light of the above statements, choose the most appropriate answer from the options given below:

Match List I with List II: List I A. Axoneme B. Cartwheel pattern C. Crista D. Satellite List II I. Centriole II. Cilia and flagella III. Chromosome IV. Mitochondria Choose the correct answer from the options given below:

The DNA present in chloroplast is

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 correct answer from the options given below :

Match list I with list II. List I A. Nucleolus B. Centriole C. Leucoplasts D. Golgi apparatus List II I. Site of formation of glycolipid II. Organisation like the cartwheel III. Site for active ribosomal RNA synthesis IV. For storing nutrients 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 :

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: List I A. Centromere B. Cilium C. Cristae D. Cell membrane List II I. Mitochondrion II. Cell division III. Cell movement IV. Phospholipid Bilayer Choose the correct answer from the options given below:

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:

Mitochondrial inner membrane encloses ___________.

Select the correct statements regarding cell membrane in eukaryotic cell. A. Membrane of human RBCs has approximately 52% protein. B. Major phospholipids are arranged in a bilayer. C. Extensions of the 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:

Cell theory was formulated by ______________.

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

Match List-I with List-II: List-I A. Cristae B. Cisternae C. Thylakoids D. Phospholipid List-II I. Flat membrane sacs in stroma of chloroplast II. Infoldings in mitochondria III. Cell membrane IV. Disc-shaped sacs in the Golgi apparatus Choose the correct answer from the options given below:

Endomembrane system includes _______.

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 :

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

Which of the following are characteristics of prokaryotic cells? (a) Ribosomes are made of 50S and 30S subunits; (b) They can have plasmids; (c) They contain mesosome; (d) They have peroxisomes.

The plastid that stores xanthophyll is known as __________.

Smooth endoplasmic reticulum ___________.