NCERT solutions for CBSE and other state boards is a key requirement for students. Doubtnut helps with homework, doubts and solutions to all the questions. It has helped students get under AIR 100 in NEET & IIT JEE. Get PDF and video solutions of IIT-JEE Mains & Advanced previous year pap...
Molecules which are transported across the membrane against their concentration gradient, i.e. from the lower to the higher concentration. Such a transport is called active transport, e.g., Na^(+)/K^(+) pump.
What is osmosis as used in biology to explain the semi-permeability of the membrane? What is the structure of the plasma membrane? What molecules can diffuse through the plasma membrane? What is the diffusion of water through a selectively permeable membrane called? a. facilitated diffusion b...
Which part of the cell membrane (phospholipid bi-layer) is attracted to water, and which part is repelled by water? 5. 6. Identify the traits of molecules that can pass through the membrane, and 7. predict which molecules can and cannot pass ...
What are the components of the plasma membrane? What are macromolecules? Which type of cell, if any, does not have a plasma membrane? What are macromolecules made of? Which molecules can easily pass through cell membrane without help of carriers? Which molecule allows the transport of charged ...
10 The table describes some molecules foun d in a cell surface membrane.Which of the following is correct? C cholesterol glycolipid glycoprotein phospholipid protein Ais a precursor of involve d in transports is amphipathic involve d in certain active transport substances in nature DNA hormones ...
What are the major properties of the cell membrane? What is the core function of the cell membrane? What are the fundamental molecules that compose the cell membrane? What non-membrane bound structure in a cell is involved in the process of translation? Whe...
The invention relates to a membrane which consists of protein-containing molecules or protein molecules which adjoin one another in crystalline or paracrystalline form and has defined pores. In this membrane, to change the filtration characteristics or to deliberately set free included substances of ...
1. Understanding the Membrane Structure: - The plasma membrane is primarily composed of a lipid bilayer, which is hydrophobic (water-repelling). This structure allows hydrophobic molecules to easily pass through. Hint: Remember that the lipid bilayer's hydrophobic nature is crucial for understanding...
Large molecules, such as glucose, that cannot cross the lipid bilayer can still move across the membrane through a type of passive transport called what? In cells, membrane proteins are responsible for the passage of substances that can't...