Gene and cistron are sometimes used as synonyms because
Cistron is generally accepted as a synonym for gene . Gene (Gr. Genos = birth , race) is the basic unit of heredity . It is a sequence of nucleotides on a chromosome that encodes a polypeptide or RNA molecule and so , determines the nature of individual 's inherited traits . Cistron is a segement of DNA that codes for one polypeptide.
How many sub-groups are divided in plant by Eichler ?
Response of different organisms to environmental rhythms of light and darkness is
Photoperiodism is the physiological reaction of organisms to the length of day or night. It occurs in plants and animals. Photoperiodism can also be defined as the developmental responses of plants to the relative lengths of light and dark periods.
In which one of the following pathogens do the cells of promycelium after the germination of teleutospore produce infection hyphae instead of basidiospores?
Which is worng about cytochrome P-450 ?
Cytochromes P450 are proteins of the superfamily containing heme as a cofactor and, therefore, are hemeproteins. CYPs use a variety of small and large molecules as substrates in enzymatic reactions. They are, in general, the terminal oxidase enzymes in electron transfer chains, broadly categorized as P450-containing systems. The term "P450" is derived from the spectrophotometric peak at the wavelength of the absorption maximum of the enzyme (450 nm) when it is in the reduced state and complexed with carbon monoxide. Most CYPs require a protein partner to deliver one or more electrons to reduce the iron (and eventually molecular oxygen). Depending on the substrate and enzyme involved, P450 enzymes can catalyze any of a wide variety of reactions. A hypothetical hydroxylation is shown in this illustration. After the product has been released from the active site, the enzyme returns to its original state, with a water molecule returning to occupy the distal coordination position of the iron nucleus.
So the correct option is 'it is a coloured cell'.