(a)

Molecule

Initial value (ppm)

Final value

Behavior

Time (s)

fvc (m/s)

Gly

1

14 ppm

asymptotic

104

0.5

Pro

1

47 ppm

asymptotic

Cys

1

1 ppm

constant

Gua

1

1 ppm

constant

Cyt

1

1 ppm

constant

Gly2

0.01

0.93 × 10−8

constant

Gly3

0.01

1. × 10−8

constant

Pro2

0.01

6 × 10−12

decreasing

GlyPro

0.01

3 × 10−10

decreasing

(b)

Molecule

Initial value

Final value

Behavior

Time (s)

fvc (m/s)

Gly

1. × 10−4

23. × 10−4

asymptotic

0.7 × 104

0.5

Pro

1. × 10−4

60. × 10−4

asymptotic

Cys

1. × 10−4

1. × 10−4

constant

Gua

1. × 10−4

1. × 10−4

constant

Cyt

1. × 10−4

1.04 × 10−4

constant

Gly2

1. × 10−6

0.94 × 10−6

constant

Gly3

1. × 10−6

0.1 × 10−6

decreasing

Pro2

1. × 10−6

0.01 × 10−6

decreasing

GlyPro

1. × 10−6

0.26 × 10−6

decreasing