Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Myoglobin
We can build up the structure of haemoglobin by considering a single unit or monomeric form caned myoglobin. This consists of a single polypeptide chain the globin in which the haem group is embedded. Myoglobin is found in striated muscles of vertebrates and combines with one molecule of oxygen. The vertebrate haemoglobins are tetramers formed by the aggregation of four polypeptide chains each containing a discrete haem group. Thus each haemoglobin can combine with four molecules of oxygen forming oxyhaeomoglobin in a reversible reaction and the unoxygenated compound is called deoxyhaemoglobin.
Two monomers in human haemoglobin are of a type called s and the other two are P type. Nearly all vertebrate haemoglobins are tetramers but invertebrate haemoglobins are more diverse. The most distinctive feature is that the subunits often form large aggregates of relative high molecular weights. In mammalian blood the amount of physically dissolved oxygen is about 0.2 ml of oxygen per 100 ml of blood. The amount found bound to haemoglobin is 20 ml oxygen per 100 ml of blood. The dissolved oxygen is therefore, almost insignificant in animals without respiratory pigments. The only exception is the antarctic fish which lacks a respiratory pigment altogether. The explanation could be that at low temperature, the metabolic rate is low and oxygen like other gases has higher solubility at low temperature.
Explain the term Chemical Score? Since egg proteins contain all essential amino acids in adequate amounts and possess the highest nutritive value among dietary proteins, Block
What is the formula for photosynthesis? H 2 O + 6CO 2 + Light Energy ----> C 6 H 12 O6+ 6O 2 6 molecules of water + 6 molecules of carbon dioxide --->1 molecule of glucose
Define Energy requirements of infants? Energy: Energy requirements of infants are based on the energy intake through breast milk by infants of well-nourished mothers. Based on
A cell with a euploid number of chromosomes contains: A.one half of a complete set of chromosomes B.several complete sets of chromosomes C.the correct number of chromosomes D.two c
Q. Prevention of Coronary Heart Diseases? In view of the steep rise in the incidence of chronic degenerative coronary heart diseases, several programmes have been formulated to
PROTOPLAST Cell without cell membrane (Henstein) It contains 1 or more vacuoles. In mature plant cells protoplast forms a peripheral layer called Primordial utricle.
Considering a pair of homologous chromosomes containing a gene having two different alleles how many different genotypes can the individual present? If a gene of a diploid spec
Endocytosis and Exocytosis Endocytosis is the process by which substances are brought into the cell from outside by formation of membrane bound vesicles. These extra cellular sub
Adverse Effects of Ribavirin Systemic ribavirin has been associated with hemolytic anemia. Oral ribavirin plus interferon appears to cause a higher incidence of cough, pruritu
Q. Monounsaturated fatty acids required for dyslipidemia? Polyunsaturated fatty acids also have a cholesterol decreasing effect. Omega 3 fatty acids are excellent for the heart
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd