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A pure phospholipid bilayer with its hydrophobic interior, is permeable to water and gases such as O2, CO2, N2 and small uncharged polar molecules such as urea, ethanol, but is impermeable to large uncharged polar molecules such as glucose, ions (Na+ , K+ , Cl-, Ca2+ ) and charged polar molecules instance for amino acids, ATP, glucose 6-phosphate. The initial group of molecules can cross a biological membrane unaided and without an input of energy, whereas the latter group requires the presence of integral membrane transport proteins and, in many cases an input of energy to travel by the otherwise impermeable membrane barrier. Thus the plasma membrane and the membranes of internal organelles are selectively permeable barriers and maintaining a distinct internal environment.
Define the Features of Cladosporium? Identifying Features of Cladosporium: 1. Colonies are small, heaped, powdery and greenish black in colour. 2. Mycelium is septate and
different type of respiration in animals
What do you understand by Larval amplification? A form of asexual reproduction where, during life cycle, a single larval organism can produce large numbers of the next developm
what are oviviviparous
why is the phylum annelida in trouble?
Q. Show effects of Hypertension? Hypertension can be damaging due to two effects: 1. Increased work load on the heart, and 2. Effect of hypertension on arteries The in
Determine Effects of probiotics on Animals? Let us briefly examine the effects that have been reported (remember most of it has been on animals): 1. In animals, probio
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The PRS kit is comprised of -5 variously sized trephines and corresponding tubes according to material if it's silver or silver point -A transmetal bur
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