Biology Answers

You are a researcher in the Plant Biodiversity Department. Three types of mango leave isolated from Gunung Ledang, Lembah Pantai and Kota Bharu were sent to your department/laboratory. Suggest the most appropriate method to study the expression levels of steroid-related genes (steroid gene A, steroid gene B, and steroid gene C) in all of the samples. Justify why the suggested method is the best approach.

Write the appropriate word:

Question:- Enzyme - medicated transfer of a phosphate from a substrate to ADP.

Write a brief account of the following :

(1) Prophase of first meiotic division .

(2) Plant cell wall

(3) Components of of vertebrate blood and their functions.

Explain the process of intercellular recognization and cell aggregation with a suitable example .

Briefly explain the mechanism of formation of proton gradient in mitochondria .

Describe various steps involved in protein biosynthesis .

Differentiate between : -

(1) smooth and rough endoplasmic reticulum .

(2) Local chernical mediators and neurotransmitters.

(3) Glycogen and starch.

(4) Electrophoresis and chromatography.

(5) Active and passive transport .

Describe the organisation of phospholipids and proteins in a typical cell membrane .

Describe the evolutionary origin of mitochondria .

The sugar in DNA is called_____________.