Plasmids have the following characters.

i) They contain fewer genes than the bacterial chromosome.

ii) They have single stranded DNA

iii) They can be used as vectors

iv) They contain linear form of DNA

v) Plasmids confer protection to drugs

The correct combination is

The correct match is:

Which of the following characters are found in ribosome?

I. They are composed of $\mathrm{RNA}$ and proteins and are not surrounded by any membrane.

II. The membrane transports a number of ions.

III. They are membrane bound vesicular structures and rich in hydrolytic enzymes.

IV. They help in the synthesis of proteins.

The correct combination is:

Assertion (A): In a vacuole, the concentration of ions and other material will be less than the cytoplasm.

Reason (R): Tonoplast facilitates the transport of ions and other material against concentration to the vacuole. 

The correct option among the following is:

Fill up the blanks with suitable words, respectively. 

Each chromosome has a ____ or _____ on the sides, disc shaped structure is called _____. The _____ chromosome has two equal arms, ____ chromosome has one shorter and one long arm. _____ chromosome has no second arm. The secondary constriction develop small fragment called ______

A) metacentric
B) telocentric
C) centromere
D) primary constriction 

E) submetacentric
F) satellite
G) kinetochore

The correct match is: