45. Nucleotides a) contain a sugar, a nitrogen containing base, and a phosphate

Question

45. Nucleotides a) contain a sugar, a nitrogen containing base, and a phosphate molecule b) are the monomers for fats andpolysaccharides c) are joined together by covalent bonds between the bases d) all of the above are correct 46 Nucleic acids are characterized for being long and complex, and for containing deoxiribgse and phosphate a) ATP b) coenzyme c) DNA d) RNA 47...These nucleic acids will contain molecules of uracil instead of thymine a) ATP b) coenzyme c) DNA d) RNA 48. Which of the following is not a nucleotide found in DNA? a) adenine b) guanine c) cytosine d) uracil e) thymine 49.Energy carrying molecule that acts as a form of"currency", whose expenditure releases energy that permits the cells to perform its tasks a) ATP b) coenzyme c) DNA d) RNA 50 Malecule that facilitates enzymatic reactions a) ATP b) coenzyme c) DNA d) RNA Chemical Bonds & Properties of Wate 1..Water can exist in liquid, gaseous, or solid form a) true b) false ANSWER THE FOLLOWING 8 QUESTIONS (2 >9) BY MATCHING WITH: A) COVALENT BOND B) IONIC BOND C) HYDROGEN BOND 2..... most common type of bond 5..... based on the transfer of electron 6.... strongest type of bond 7...(.... this is the type of bond found in water and DNA molecules 8... based on shared electrons 9......) this bond is based on the attraction of opposite charged ions 10:A covalent bond is indicated by a) plus and minus charges attached to atoms b) dotted lines between hydrogen atoms c) concentric circles about a nucleus d) overlapping electron shells or a straight line between atomic symbols

Explanation / Answer

45.a (nucleotides contain sugar+nitrogen base+phosphate)

46.c(in DNA deoxyribose sugars present)

47.d

48.d

49.a

50.b

1.true

2.A

3.c

4.a

5.b

6.a

7.c

8.a

9.c

10.d

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