EASY
Earn 100

What is pinocytosis process?

Important Questions on Cell Membranes and Transport

HARD

A lysosome vesicle of 1 μm diameter has an internal pH of 5.0. The total number of H+ ions inside this vesicle would range from

EASY
Which of the following physico-chemical techniques is commonly used to desalinate brackish water?
HARD
Which of the following elements is responsible for maintaining turgor in cells?
EASY
The water potential ψp of pure water at standard temperature and atmospheric pressure is:
MEDIUM

Assertion (A): The flow of solvent molecules from a pure solvent to the solution through semipermeable membrane is osmosis.

Reason (R): Pure solvent molecules flow out of the solution through semipermeable membrane if a pressure larger than the osmotic pressure is applied to the solution side.

The correct answer is:

EASY

The containers X and Y have 1 litre of pure water and 1 litre of 0.1 M sugar solution, respectively. Which one of the following statements would be correct regarding their water potential Ψ and osmotic potential Ψs?

*Note: There were errors in original KVPY papers, and thus the options are modified here.

EASY
Which of the cellular organelle mentioned below have to import all the proteins they contain?
EASY
Both lysosomes and vacuoles are endomembrane structures, yet they differ in terms of their functions. Comment.
EASY
The mitochondria serve as a marker for cytochrome oxidase and the lysosomes serve for ...........
EASY
What are lysosomes, peroxisomes and centrosomes? Write their functions.
EASY
Match the following.
 
Column-I Column-II
1. Inclusion bodies a. Carbohydrases
2. Lysosomes b. Glycolipids
3. Mitochondria c. Gas vacuoles
4. Golgi apparatus d. 70S ribosome
EASY
Which of the following organelles breaks down dead cells ?
MEDIUM

Represent the union of two sets by Venn diagram for each of the following.

X={x | x is a prime number between 80 and 100}

Y={y | y is an odd number between 90 and 100}

MEDIUM
Write an account of lysosomes and their role in cellular metabolism.
MEDIUM
Lysosomes are _______ vesicular structures formed by the process of packaging in the _________ .