Biotechnology: Principles and Processes — BIOLOGY STD 12 Science — Question

How do surgical procedures prevent conception in humans? Explain the way it is achieved in human males.

Name the enzyme produce by streptococcus bacteria. Explain its importance in medical science.

Name the plant source of the drug popularly called “smack”. How does it affect the body of the abuser?

OR

Name an opioid drug and its source plant. How does the drug affect the human body?

In order to obtain the F₁ generation, Mendel pollinated a true–breeding, say, tall plant with a true–breeding dwarf plant. But for getting the F₂ generation, he simply self-pollinated the tall F₁ plants. Why?

Describe briefly the following:
Downstream processing

The ‘clown’ fish lives among the tentacles of sea anemone. What is this interaction between them called and why?

Name any two industrially important enzymes.

What is Penicillin? Who discovered it?

What are pathogens?

Give a suitable example for commensalism.