Cell Biology Questions

There is no $\text{DNA}$ in:

The chemiosmotic coupling hypothesis proposes that ATP is formed because:

The two subunits of a ribosome remain united at a critical level of:

Regarding the 'fluid mosaic model', which movement is correct for lipids and proteins?

A polysome is formed by:

The vacuole in a plant cell:

Assertion : Mitochondria and chloroplasts are semi-autonomous organelles.Reason : They are formed by division of pre-existing organelles as well as contain DNA but lack protein synthesizing machinery.

In which one of the following would you expect to find glyoxysomes?

Three of the following statements regarding cell organelles are correct while one is wrong. Which one is wrong?

Many cells function properly and divide mitotically even though they do not have:

When synapsis is complete all along the chromosome, the cell is said to have entered a stage called:

A cross section at the midpoint of the middle piece of a human sperm will show:

Chlorophyll in chloroplasts is located in :

Centromere is required for :

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

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

A cell organelle containing hydrolytic enzymes is:

Select the wrong statement.

Select the mismatch.

Match the columns and identify the correct option:(a) Thylakoids — (i) Disc-Shaped sacs in Golgi apparatus(b) Cristae — (ii) Condensed structure of DNA(c) Cisternae — (iii) Flat membranous sacs in stroma(d) Chromatin — (iv) Infoldings in mitochondria

Cellular organelles with membranes are:

Which of the following are not membrane-bound?

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

The enzyme recombinase is required at which stage of meiosis?

Motile bacteria are able to move by:

In the 'S' phase of the cell cycle:

Which one of the following living organisms completely lacks a cell wall?

Match the following and select the correct answer:(a) Centriole — (i) Infoldings in mitochondria(b) Chlorophyll — (ii) Thylakoids(c) Cristae — (iii) Nucleic acids(d) Ribozymes — (iv) Basal body of cilia or flagella

During which phase(s) of the cell cycle does the amount of DNA in a cell remain at $4\text{C}$ level if the initial amount is denoted as $2\text{C}$?

Match the stages of meiosis in Column-I to their characteristic features in Column-II:Column-I: (a) Pachytene, (b) Metaphase I, (c) Diakinesis, (d) ZygoteneColumn-II: (i) Pairing of homologous chromosomes, (ii) Terminalization of chiasmata, (iii) Crossing-over takes place, (iv) Chromosomes align at equatorial plate

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

Which structures perform the function of mitochondria in bacteria?

Rough Endoplasmic Reticulum (RER) is primarily involved in the synthesis of:

A stage in cell division shows nuclear envelope reforming and Golgi complex reforming. Identify the stage:

Which organelle matches correctly with its function?

The Golgi complex plays a major role in:

Meiosis takes place in:

The complex formed by a pair of synapsed homologous chromosomes is called:

A major site for the synthesis of lipids is:

Pigment-containing membranous extensions in some cyanobacteria are:

During gamete formation, the enzyme recombinase participates during:

Nuclear membrane is absent in:

Select the correct statement from the following regarding cell membrane: