Which of the following statement is correct about diffusion? It is very rapid ov

Question

Which of the following statement is correct about diffusion? It is very rapid over long distance. It is requires an expenditure of energy by the cell. It is a passive process in which molecules move from a region of higher concentration. It requires an expenditure of energy by the cell concentration a region of lower concentration to one of higher concentration. It requires integral proteins in the cell membrane. If an enzyme solution is saturated with substrate, most effective the way to obtain an even famer field of products is to add more enzyme. heat the solution to 90 degree C add more substrate. add an allosteric inhibitor. add a noncompetitive inhibitor. When an excess of end-product molecules alters the shape of the first enzyme in the pathway and off that metabolic pathway, this is called feedback inhibition denaturation equilibrium phosphorylation saturation What is one of the functions of cholesterol in animal cell membranes? facilitates transport of ions stores energy maintains membrane fluidity speeds diffusion phosphorylates ADP Which of the following statements correctly describe(s) catabolic pathways? They do not depend on enzymes. They consume energy to build polymers from monomers. They release energy. They are regulated sequences of chemical reactions. Both C and D Which curve represents the behavior of an enzyme taken from a bacterium that thrives in the hot springs at Yellowstone National Park? Curve 1 Curve 2 Curve 3 Curve 4 Curve 5 Which curve was most likely generated from an enzyme that is fully functional in human stomach conditions? Curve 1 Curve 2 Curve 3 Curve 4 Curve 5

Explanation / Answer

34.The correct answer is: C)It is a passive process in which molecules move from a region of higher concentration to a region of lower concentration.

Reason: Above statement best defines difusion.

35.The correct answer is:A) add more of the enzyme.

Reason: Addition of more enzyme will make more active sites to be available for substrates to bind.

36.The correct answer is:A)feed back inhibition.

Reason: Feed back inhibition best explains the process mentioned.

37.The correct answer is:C)maintains membrane fluidity.

Reason:Cholesterol helps in maintaining fluidity of the membrane.

38.The correct answer is:C) they release energy.

Reason:Energy is released as monomers are formed by degradation of polymers.

39.The correct answer is:C)Curve 3

Reason:Thermophilic bacteria thrive at high temperatures of 410C to 1220C.So enzyme taken from such bacteria will also be active at this temperature.

40.The correct answer is :D) Curve 4

Reason: The pH of gastric acid present in stomach is between 1.5 to 3.5.So enzyme generated from stomach will be fully functional in between this pH.

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.