Cell membrane in animals is composed mainly of the molecule of
lipids
proteins
lipids and proteins
carbohydrates
C.
lipids and proteins
Major constituents of plasma membranes are Protein(60%) and lipids(40%). The percentage of carbohydrates ranges from 1-10 which are in the form of glycoproteins or glycolipids.
Proteins may be extrinsic(peripheral) and intrinsic(integral) while lipids may be phospholipids, sphingolipids, glycolipids and sterols(eg- cholesterol).
Which one is single membrane cell organelle
Endoplasmic reticulam
Mitochondria
Lysosomes
Chloroplast
Major nitrogenous waste product in ureotelic animals like rabbit and other mammals is
uric acid
urea
ammonia
amino acids