PCR In vitro technique to amplify specific DNA segment. Blood pressure Force exerted by blood on vessel walls during heart contraction.

Practice completing these charts:

Tip: Learn the complete chart, not just gaps.

Most Repeated "Give Reason" Questions:

Question	Answer Keywords
Why is ABA called antitranspirant?	Closes stomata, reduces water loss, drought stress hormone.
Water acts as thermal buffer.	High specific heat, high heat of vaporization, maintains temperature.
All spinal nerves are mixed.	Have both dorsal (sensory) and ventral (motor) roots.
Chlorophyllase role in banana.	Breaks down chlorophyll, reveals yellow carotenoids, ripening.

Format: Make 2-column table.

Most Asked Differentiations:

Table Format Example:

Feature	A	B
Feature 1
Feature 2

Amino Acid Counting from mRNA:

Steps:

Example:

5' GCC ACA UGG AGA UGA CGA CAA AAU UUU ACU AGA AAA 3'

Choose questions you're MOST confident in.

Scoring Pattern:

Best Questions to Attempt:

Q.27 - Blood Pressure: Definition + Instrument + Artery vs Vein (2+1+1 marks).
Q.29 - PCR: Definition + 3 steps.
Q.30 - Fertilization: 4 significances + Germ layer organs.

Avoid if unsure:

Morning (2 hou