Unlike amphibians, reptiles
a. have lungs to oxygenate blood.
b. have ventricles that are further divided to lessen mixing of oxygen-rich and oxygen-poor blood.
c. have a closed circulation system in which blood circulates entirely within blood vessels.
d. use single-loop circulatory

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme

surface modification is a versatile tool and has been widely used in material science and engineering that has significantly facilitated the study and characterization of complex materials. at  matexcel, experienced experts in surface science can offer tailored efforts to meet the specific needs from our clients.

this protocol provides a detailed procedure for agarose-based ip to purify and enrich the protein of interest.

the index of refraction of the second medium is higher. i just took the test trust me !