Biomolecules — BIOLOGY STD 11 Science — Question

Explain the difference between Oxidative Phosphorylation and Photophosphorylation.

What is the difference between two stages of metabolism?

Give scientific reasons of the following statements:

1. Adrenals are called glands of emergency.
2. Parathormone is also called Collip's hormone.
3. The hormones released by the posterior lobe of pituitary are not its own products.
4. Endocrine glands directly release their products into the blood.

Write the difference between true coelom and pseudocoelom.

Briefly describe the following:
Atherosclerosis.

Mention any four activities regulated by the estrogen hormone.

OR

List any four effects produced by estrogen.

Nutan's grandfather read in the newspaper that, for predicting the identity of criminals or for deciding the controversies regarding biological parents of the child, court always asks for DNA test. He wanted to know the procedure behind it. So, asked Nutan about DNA as she was studying biology in class XI. She replied that it is a substance present in the cells of living organisms which store the information about an individual.

1. According to you, what is DNA? And what percentage of DNA varies from one individual to the other?
2. What are the main constituents of DNA?
3. Why are biologists interested in studying human genome?
4. What values are reflected from Nutan's grandfather behaviour?

Find out and make a list of proteins used as therapeutic agents. Find other applications of proteins (e.g., Cosmetics etc.).

Explain the guidelines/ principles for nomenclature.

Briefly describe the following:
Hypertension.