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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.
Q What is signifying by binomial nomenclature and what are its basic rules? Scientific nomenclature of a species must have at least two names one that classifies it as genus an
KIDNEY S - Origin . They develop from the mesoderm of the embryo. The kidneys secrete three hormones: renin, erythropoetin and calcitriol. (i) Renin . Whenever the rat
FACTORS AFFECTING THE RAPEUTIC RELATIONSHIP: A rapport is developed between the nurse and the patient. Rapport is defined as, a relationship of mutual sympathy and underst
Behaviour change communication is necessary as it ensures that the diabetic patient and their families have access to correct information about the disease, complications, treatm
Feeding management Feeding management deals about the in-house management in which the feed consumption pattern is well understood in the sheds and suitable alterations are made
Spermatogenesis In multicellular organisms the reproductive process commences with the production of gametes. The gametes are the sex cells that develop inside the gonads, th
Explain Oxidative phosphorylation Oxidative phosphorylation : Synthesis of ATP from ADP and Pi during the passage of electrons in the respiratory chain.
different types of respiration
write two part each in the body where cuboidal epithelia tissue are found in absorption and excretion
Q. DEFINITION OF DIABETES MELLITUS? The word "diabetes" is derived from the Greek word meaning "a siphon". The patients of diabetes had polyuria (passing excessive urine) and "
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