23.Radtolsot A) repairing damaged heart tissue B) dating fossils and treating ca

Question

23.Radtolsot A) repairing damaged heart tissue B) dating fossils and treating cancer C) curing bacterial infections D) treating asthma and regulating nerve transmission E) curing diabetes topes have a number of uses in science and medicine. These uses include 24. As water freezes A) its molecules move farther apart B) it absorbs energy from the surrounding environment C) it cools the surrounding environment D) its hydrogen bonds break apart 25.In the equation 2 H2 02 2 H20, A) H2,02, and H20 are all compounds. C) only H20 is a compound B) H2, 02, and H20 are all elements D) only H2 and 02 are compounds. 26. Which of the following is true concerning hydrogen bonds? A) They are weak bonds that form between water molecules in liquid form. B) The bonds break when water enters a vapor state and remain broken as long as water molecules remain the gas phase Hydrogen bonds hold strands of DNA together All of the above are correct 27. Body fluids in humans have a high buffering capacity because A) even modest shifts in pH can severely alter the physiology of cells B) it is the natural result of water as a solvent. it promotes hydrogen bonding between water molecules in biological fluids. D) shifts in blood pH are required to maintain homeostasis 28.A glycerol with three fatty acids attached is referred to as a A) prostaglandin B) nucleic acid E) triglyceride C) steroid D) protein 29. Carbon is able to form an immense diversity of organic molecules because of carbon's A) tendency to form covalent bonds B) ability to bond with up to four other atoms. C) capacity to form single and double bonds. D) ability to bond together to form extensive, branched, or unbranched "carbon skeletons E) All of the choices are correct. 30.Identify a disaccharide in the following list A)starch B)glycogen C)sucrose D)glucose E) fructose 31.A phospholipid is composed of A) one glycerol molecule linked to three fatty acids. B) one fatty acid molecule linked to three glycerol molecules. C) one glycerol molecule linked to three phosphate groups. D) one fatty acid molecule linked to one glycerol molecule and two phosphate groups. E) one glycerol molecule linked to one phosphate group and two fatty acids. 32. Which of the following can result in the denaturation of a protein? A) frying an egg B) curdling milk with lemon juice D) A and B C) toasting bread E) A,B and C

Explanation / Answer

Ans 23: ( B )

Ans 24: (A )

Ans 25: ( C )

Ans 26 : ( D )

Ans 27 : ( D )

Ans 28 : ( E )

Ans 29 : ( E )

Ans 30 : ( C )

Ans 31: ( E )

Ans 32 : ( D )

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

---

---

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