Since DNA is a hydrophilic molecules, it cannot pass through cell membranes. Why ?

Select the wrong statement (a) Presence of chromogenic substrate gives blue color colonies if the plasmid in the bacteria does not have an insert (b) Retroviruses in animals have the ability to transform normal cells into cancerous cells (c) In microinjection, cells are bombarded with high velocity microparticles of gold or tungsten coated with DNA (d) Since DNA is a hydrophilic molecule it cannot pass through cell membranes

Sound cannot pass through vacuum.

DNA being hydrophilic cannot pass through the cell membranes of a hot cell. Explain how does recombinant DNA get introduced into the host cell to transfrom the latter.

DNA being hydrophilic cannot pass through the cell membranes of a hot cell. Explain how does recombinant DNA get introduced into the host cell to transfrom the latter.

Carrier molecules facilitating transport across cell membrane are

Which of the following technique can be used for introduction of hydrophilic recombinant DNA through the cell membranes of a host cell ?

Magnetic force cannot pass through non-magnetic materials.

(i) Describe the characteristics a cloning vector must possess. (ii) Why DNA cannot pass through the cell membrane ? Explain. How is a bacterial cell made competent to take up recombinant DNA from the medium?

The process by which hydrophilic molecule move across the membrane by proteins is known as

Go through the following statements (i) In human beings, the membrane of the erythrocyte has approximately 52 percent lipids and 40 percent proteins (ii) Lipids are arranged within the membrane with the hydrophobic tails towards the outer side and the polar head towards the inner side. (iii) As the polar molecules cannot pass through the non- polar lipid bilayer, they require a carrier protein of the membrane to facilitate their transport across the membrane (iv) The endomembrane system includes endoplasmic reticulum, Golgi complex, lysosomes and peroxisomes Find out the wrong peroxisomes :