Topic : cell

All of the given cell organelles are single membrane bound, except

Read the following statements and select the correct option. Statement A: Facilitated diffusion does not require any energy expenditure. Statement B: Active transport cannot be inhibited by inhibitors.

Water potential of a solution at room temperature and pressure

Read the following given statements:

Statement A: Plasmid is closed, circular extra-chromosomal DNA. Statement B: Plasmids are possessed only by eukaryotic cells.

Choose the correct option.

Select the incorrect statement

A storage battery has an emf of 25 V and internal resistance is 0.20 Ω. What is its terminal voltage when it is being charged by a current of 8 A?

The standard electrode potential (E°) values of A⁺/A, B⁺/B, C⁺/C and D⁺/D are 2.19 V, 1.87 V, -2.93 V and -1.7 V respectively. The correct decreasing order of reducing power of the metal is

A potentiometer having a wire 10 m long stretched on it is connected to a battery having a steady voltage. A cell gives a null deflection point at 700 cm. If the length of potentiometer wire is increased by 2 m, then the new position of null point will be

In certain bacteria, small circular DNA found outside the genomic DNA is called

Select the incorrect statement for endomembrane system.

Find the odd one for G₁ phase.

Facilitated diffusion does not

The element which is major component of middle lamella is

Cells that enter G0 phase

Study the list of biomolecules given below and choose the option that shows molecules with glycosidic linkages.

Select the incorrect statement about plasma membrane

Deoxyribonucleic acid (DNA) is synthesized during which phase of cell cycle in animal cells?

Movement of molecules takes place along the concentration gradient in

If two molecules A & B move in the same direction. This movement can be called

Protoplast is

Which of the given cell organelles do not contain DNA? A. Mitochondria B. Chloroplast C. Golgi complex D. Lysosome The correct ones are

What will be the DNA content at the end of S-phase of cell if its meiotic products have 8 pg of DNA in each cell?

Water channels are made up of how many different types of aquaporins?

Active transport differs from facilitated transport as the former

Cells in the meristematic phase exhibits all of the given characteristics, except

Castner-Kellner cell is used for the preparation of

Which structure in bacteria prevents them from collapsing?

Which of the following processes does not occur during S phase of cell cycle?

In living system, facilitated transport

If standard reduction potential of three metals, A, B and C are -0.5 V, +1.2 V and -1.5 V respectively, then the order of reducing power of the metals will be

Organelle which is surrounded by double membrane is

Which of the following features is not related to facilitated diffusion?

Solution A has higher solute concentration as compared to solution B. If they are at room temperature and at the same atmospheric pressure then, water potential of solution A will be

Centriole duplicates in animal cells during

Select the incorrect match.

A wire of resistance R is cut into 8 equal pieces. From these pieces two equivalent resistances are made by adding four of these together in parallel. Then these two sets are added in series. The net effective resistance of the combination is:

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:

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

Match List I with List II.

List I A. Adenosine B. Adenylic acid C. Adenine D. Alanine

List II I. Nitrogen base II. Nucleotide III. Nucleoside IV. Amino acid

Choose the option with all correct matches.

Number of Faraday required to reduce 0.5 mole of MnO₄⁻ to MnO₂ is

Plasma membrane

Histone proteins are synthesized during

The transporters which can help in both active as well as passive transport of molecules are

Match column-A with column-B and choose the correct option

Column-A a. Catalase b. Nuclease c. Purine d. Starch

Column-B i) Storehouse of energy in plants ii) Heterocyclic ring structure iii) Hydrolase iv) Haem

Standard Gibbs energy ($\Delta_r G^\circ$) of the reaction Mg(s) + Cu$^{2+}$(aq) $\rightleftharpoons$ Mg$^{2+}$(aq) + Cu(s); E$^\circ_{cell}$ = 2.71 V at 298 K is

Which of the following is related to both chloroplast and mitochondria?

Which characteristic is related to anaphase?

Facilitated diffusion

All of the following are present in bile except

In a potentiometer experiment, if two cells are connected in series to support each other, the balance point is at 2 m and when cells are connected in series to oppose each other, the balance point is at 1 m. The ratio of electromotive forces of two cells is

Given the standard electrode potentials, Zn²⁺/Zn = -0.76 V, Al³⁺/Al = -1.66 V, Ca²⁺/Ca = -2.87 V, Na⁺/Na = -2.71 V, Mg²⁺/Mg = -2.36 V. The correct order of reducing power of these metals is

Which of the following statements is correct?

Read the following statements and choose the option which is true for them a. Simple diffusion in organisms is a slow process b. Gaseous exchange in plants occurs only by simple diffusion c. Facilitated diffusion requires transporters d. Facilitated diffusion shows uphill movement of molecules

Which of the following components of cell constitutes maximum percentage of total cellular mass?

Match items given in Column-I with those in Column-II and choose the option with all correct match.

Column-I a. Pigment b. Alkaloid c. Hormone d. Intercellular ground substance

Column-II (i) Morphine (ii) Insulin (iii) Collagen (iv) Anthocyanin

Select the overall reaction which takes place in H₂–O₂ fuel cell.

Number of Faradays required for conversion of 0.5 mol Cr₂O₇²⁻ ion into Cr³⁺ ion is

Which of the given events occur during S-phase of cell cycle? a. DNA replication b. Tubulin protein synthesis c. Duplication of centrioles d. Duplication of Golgi body

The best stage to study shapes of chromosomes is

Which of the given sets of elements are the main structural elements of cells?

Increased solubility of lipids in intestinal lumen is due to the formation of

In plants, the living component in the dead cell wall is

Select the incorrect match from the following.

One of the differences between prophase I of meiosis and prophase of mitosis is that, in the former

Read the following statements and choose the correct answer. A. Cellulose is a branched structural polysaccharide. B. GLUT-4 is a heteropolymer. C. Zinc ions are required for catalytic activity of salivary amylase.