{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

2008 test - 1 Which of the following is not found in DNA 0...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Sheet1 Page 1 1. Which of the following is not found in DNA? 0 0.000 a) Adenine 0 0.000 b) Guanine 1 0.003 c) Cytosine 298 0.997 d) Uracil## 0 0.000 e) Thymine 2. A phosphodiester bond links which carbons together on the ribose backbone? 14 0.047 a) 4' to 2' 7 0.023 b) 6' to 1' 8 0.027 c) 3' to 2' 266 0.890 d) 5' to 3'## 4 0.013 e) 3' to 4' 3. The amino group of glycine can exist either in the protonated form (-NH3+) or as the free base (-NH2). In order to have 99 % 170 0.569 a) pH-pKa = -2## 37 0.124 b) pH-pKa = -1 40 0.134 c) pH-pKa = 0 20 0.067 d) pH-pKa = 1 30 0.100 e) pH-pKa = 2 4. Which of the following statements is correct? 2 0.007 a) a reaction is said to be spontaneous when it can proceed in either the forward or reverse direction. 1 0.003 b) a spontaneous process always happens very quickly. 30 0.100 c) a spontaneous process can occur only if there is a large increase in entropy. 132 0.441 d) a spontaneous process can proceed spontaneously in the reverse direction with an appropriate change in rea c 134 0.448 e) none of the statements. 5. The volume of a solution of 1 M NaOH that must be added to adjust the pH from 4 to 9 in 20 mL of a 100 mM solution of p h 6 0.020 a) 1 mL 266 0.890 b) 2 mL## 3 0.010 c) 3 mL 20 0.067 d) 4 mL 4 0.013 e) 5 mL 6. Indicate the ionic species that predominate at pH 3 I: Succinate(-2) II: CO3(-2) III: Succinic acid IV: H2CO3 V: Succinate(-1) VI: HCO3(-) 5 0.017 5 0.017 278 0.930 3 0.010 8 0.027 7. Indicate the ionic species that predominate at pH 8 I: HCO3(-) II: Succinate(-1) III: H2CO3 IV: Succinate(-2) V: CO3(-2) VI: Succinic acid 273 0.913 12 0.040 1 0.003 9 0.030 3 0.010 e) III & VI
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 8

2008 test - 1 Which of the following is not found in DNA 0...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon bookmark
Ask a homework question - tutors are online