HSC Science (General) इयत्ता १२ वी - Maharashtra State Board Question Bank Solutions

Explain the various types of acquired immunity.

Write a short note on Acute Phase Proteins (APPs).

Enlist the steps in the process of chemical evolution.

With the help of a suitable diagram, describe the conducting system of the human heart.

What is leaching?

Give the significance of respiration

cDNA means ______.

Recombinant protein .................. is used to dissolve blood clots present in the body.

Give the role of Ca⁺⁺ ions in the transfer of the recombinant vector into the bacterial host cells.

In the process of rDNA technology, if two separate restriction enzymes are used to cut vector and donor DNA then which problem will arise in the formation of rDNA or chimeric DNA? Explain.

Explain the steps in process of rDNA technology with suitable diagrams.

Choose the correct alternative.

_______ wave in ECG represent atrial depolarization.

Very short answer question.

Why does trachea have ‘C’ shaped rings of cartilage?

Very short answer question.

Name the organ which prevents the following the entry of food into the trachea while eating.

Explain the following terms with respect to rDNA technology

1. passanger DNA
2. Chimeric DNA
3. Transformed cell
4. restriction site

Alveoli provide the surface area for exchange of ______.

Name the cartilage which divides the nasal cavity into right and left nasal chambers.

Give the function of epiglottis.

Define genomic library.

Give reason: All the fragments of a genome are cloned for storing them in genomic library.