Question

15.
16.
as beautiful as​

Answer 1

Answer:

All proteins have primary, secondary and tertiary structures but quaternary structures only arise when a protein is made up of two or more polypeptide chains. ... Secondary structure is when the polypeptide chains fold into regular structures like the beta sheets, alpha helix, turns, or loops.

Answer 2

Answer:

Foreigner : Excuse me. May I seek your help?

Myself : Of course! How can I help you?

Foreigner : Very nice to meet you. I am an American tourist. This is my first visit to Bangladesh.

Myself : Welcome to Bangladesh, sir. How can I help you?

Foreigner : I want to know about the most attractive tourist spots in Bangladesh.

Myself : Well, there are many tourist spots in Bangladesh. Bandarban, Rangamati, Sylhet and Bogra are remarkable places of them.

Foreigner : And Cox's Bazar?

Myself : Yes, sir. This is the longest sea beach in the world. There is another sea beach called Kuakata. It's a very nice place. You can enjoy both sun rise and sun set from the same place.

Foreigner : Oh really!

Myself : Yes. If you go to Sylhet, you will see beautiful tea gardens.

Foreigner : Thank you very much.

Myself : No mention. It's my pleasure to help.

Foreigner : See you again, bye.

Myself : Good bye.