Let us assume you have been provided

with the information you requested in point (ii). You will now employ a

molecular biology technique to create a concentrated solution of the molecule

of interest. 

During intense exercise, as seen in the

cricketer above, sweat is produced by sweat glands. Although sweat initially

contains both water and electrolytes, some electrolytes are reabsorbed as sweat

moves through the duct. Compared to blood plasma, the final sweat that reaches

the skin surface is:

Name the technique you will use to create the concentrated solution of the molecule of interest you have identified.

List the components of the reaction mixture you

will create to conduct the selected molecular biology technique.

Describe any one internal threat which the

immune system is constantly keeping in check to keep you healthy.

The skin is a significant barrier that forms

part of your innate immune system. Match the features in Column A with their

function in Column B

Remember the trekking trip we took to Ladakh during the lectures and how we stepped onto a rusty nail? The image above shows the wound site. Identify the components of the immune system marked on the figure.

The pathological lab extracts the bacterial

cells from a sputum sample provided by Amulya after 3 weeks of medication and

cultured the bacteria in the lab. Given his prolonged and worsening symptoms, the technician should use -------- concentration of the antibiotic than regular in the antimicrobial susceptibility test.

As life evolved further, some aspects of the

immune system were preserved over time while some were lost. Can you propose a

strategy to track this evolution of features of the immune system over time?

Amulya was unfortunately diagnosed with

tuberculosis (a baterial infection) and doctors prescribed the appropriate first line antibiotics.

Even after 3 weeks of medication, Amulya’s symptoms kept on worsening. What could be a possible

reason for this?