biochem-midterm-2-answers - Chemistry and Biochemistry 153A...

Chemistry and Biochemistry 153A
Winter 2009
Midterm Exam 2
Instructions:
 You will have 1 hour 30 minutes to complete this exam.
 You may use a pencil (recommended) or blue or black ink pen to write your
answers. Other color inks will not be graded. Exams taken in pencil are still
eligible for regrades.
 Check that your answer sheet ID and your exam ID match.
 Only answers on the answer sheet, in the indicated space, will be graded; writing
anywhere else will be ignored. Be sure to write your name on the answer sheet.
 Do not write in the score boxes on your answer sheet; you will be docked points if
you do.
 For answers with a word or sentence limit, words beyond this limit will not be
read or graded.
 For short- or multi-answer questions, including irrelevant or wrong information or
selections in your answer will cause you to lose points.
 Write legibly. If the grader cannot read your answer, you won’t get credit.
 Items you may have on your desk:
- non-programmable scientific calculator, without its case or cover
- writing utensil(s)
- student ID
ALL other items must be placed into a bag, which must be zipped up or closed
and pushed completely under your chair.
 No hats or earphones allowed. (Head scarves are fine.)
 If you need to use the restroom, bring your exam to a proctor. Only one student
may use the restroom at a time.
 If you continue to write after ‘time’ is called, your exam will be taken and docked
10 points.
 Questions are printed front and back – don’t miss any!
 You may want to write out your solutions before placing them on your answer
sheet, to make sure you have enough space.
1/8

1. (1 pt) Write your exam ID in the blank at the upper right of your answer sheet.
2. (10 pts) True or False
 The free energy of the highest-energy intermediate directly determines the rate
of a reaction.
 K
I
is equivalent to the K
d
of an enzyme-inhibitor complex.