Answer: (a) = 0.022mmoles/minute; (b) = 0.00022mmoles/minute; (c) = 0.022mmoles/minute
Explanation:
The Michaelis- Menten equation is used to show the relationship between substrate concentration and reaction rate.
The equation is Vo = Vmax[S]/(Km + [S]
where Vo is the initial velocity, Vmax is the maximum velocity, [S] is the substrate concentration, Km is the Michaelis constant.
(a) For enzyme 1; Vo = 0.002mmoles/minute, Vmax = ?, [S] = 0.1mM, Km =1.0mM; making Vmax subject of the formula;
Vmax = Vo * (Km + [S])/ [S]
Vmax = 0.002*(1.0 + 0.1)/ 0.1
Vmax = 0.022mmoles/minute (Vmax for Enzyme 1&2)
(b) Vo = Vmax[S]/(Km + [S]
Vo = 0.022 * 0.1/(10+0.1) = 0.00022mmoles/minute
(c) Vo = Vmax[S]/(Km + [S]
Vo = 0.022*1000/(1.0+1000) = 0.022mmoles/minute
Answer: a reaction in which energy is absorbed from the surroundings is called an endothermic reaction
Explanation: in in document reactions the enthalpy of the products is greater than the empathy of the reactants. exothermic reactions heat up their surroundings while endothermic reactions cool them down
Answer:On Earth, water is the solvent critical to life without which organisms cannot survive. Its presence is so critical, because water provides an environment allowing some chemical bonds to be stable and to maintain macromolecular structure, while at the same time assisting in the dissociation of other chemical bonds
Explanation:
Skeletal muscles
Structure; they are long cylindrical fiber, striated, many peripherally located nuclei.
Functions; Voluntary movement, produces heat, protects organs.
Examples; the biceps, slow twitch fibers, fast glycolytic fibers.
Cardiac muscles
Structure; they are short, branched, striated, single central nucleus
Functions; Contracts to pump blood, they are found in the heart
Examples; Heart muscles
Smooth muscles
Structure; They are short, spindle shaped, no evident of striation, single nucleus in each fiber
Function; Involuntary movement, moves food, involuntary control of respiration, moves secretions, regulates the flow of blood in arteries by contraction.
Example; Muscles found in the walls of hollow organs like the intestines, stomach and the blood vessels.