CHEM 153A · Dis 1B
Biochemistry: Introduction to Structure, Enzymes, and Metabolism
Seats, time, final and grades
Seats
Closed.
29 of 29 enrolled.
Read 6 hours ago. The latest refresh is overdue. Seats and instructors may have changed since. Check the registrar before enrolling.
Meets
T 11:00am-11:50am
This discussion only. You also attend Lec 1.
Final
Sun 6 Dec, 11:30am to 2:30pm
One exam for the whole class, Los Angeles time.
Read 6 days ago.
Grades
Predicted GPA
dibs has seen this section open 8 times since 18 August. The last time was 2 October. 4 of those were readings where the capacity figure moved and the enrolled count did not, so dibs could not tell whether a seat existed and did not send an alert.
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From the registrar Registrar note
Any student attempting to save or sell a spot for another student is violating Student Conduct Code 102.23d and may be referred to the Office of the Dean of Students. Seats are held for entering students who enroll through New Student Orientation sessions beginning July 2, 2026. New student restrictions will be lifted on September 15, 2026 at 8 a.m. Enrollment is limited to departmental majors on the priority and first enrollment passes. Any student may enroll on the second pass, space permitting. PTE numbers are NOT available; do not contact the instructor for a PTE number. There will be two MANDATORY midterm examinations from 6 to 7:50 p.m. on the following Fridays: October 23 and November 20, 2026.
The new-student hold ended on 15 September.
Restrictions checked 6 days ago and may be outdated. Unwatched sections are rechecked less often than watched sections. Check the registrar before counting on a seat.
When it meets
This discussion and its linked lecture.
Scroll sideways for the whole week. All meeting times are listed below.
Boelter Hall 5440
Grades
Predicted GPA
Of the 7 people in the grade record for CHEM 153A, the 2 with the most grades: LANNAN, RYAN at 3.31 over 5,633 grades and ELLIS GUARDIOLA, KAT at 3.31 over 1,124 grades.
- A range
- 55%
- P/NP
- <1%
- D/F/W
- 4.8%
What students say
dibs measures outcomes: grades, seats, how fast it fills. For what the class is actually like to sit in, BruinWalk has the reviews.
No assignment details are available in this review summary. Based on 246 reviews; source checked about 1 month ago. Missing details do not mean there are no papers or exams. Check the current syllabus.
Will it still be here
high risk chance of closing before your enrollment pass.
Final enrollment per term from four years of grade data. Summer excluded: different population, different pass structure.
- 27722W
- 25122S
- 18122F
- 28123W
- 31823S
- 22223F
- 35024W
- 35024S
- 20424F
- 29825W
- 33525S
- 30025F
Peak 350 · most recent 25F at 300
Seats over time
Nothing read since 16 Oct, 6 hours ago. Over about 2 months before that, filled by 5.
8 times reopenedA dot is a reading where something moved: the seat count, the status, or the waitlist. Flat between dots joins recorded counts; changes between reads may be missed. The line starts when dibs first saw this section rather than reaching back before it existed. The last one is the last time dibs read this section, moved or not, and that was 6 hours ago. It is where the line stops, not where the count is now.
Show the readings (21)
| Recorded | Enrolled | Capacity | Status | Waitlist | Hours read |
|---|---|---|---|---|---|
| 16 Oct 11:12 | 29 | 29 | closed | - | 41 of 282 |
| 4 Oct 18:12 | 29 | 29 | closed | - | 4 of 46 |
| 2 Oct 21:33 | 27 | 29 | open | - | 2 of 8 |
| 2 Oct 14:42 | 28 | 29 | open | - | 2 of 4 |
| 2 Oct 11:12 | 27 | 29 | open | - | 2 of 8 |
| 2 Oct 04:42 | 28 | 29 | open | - | 2 of 5 |
| 2 Oct 00:52 | 29 | 29 | closed | - | 2 of 6 |
| 1 Oct 19:02 | 28 | 29 | open | - | 104 of 691 |
| 3 Sep 01:40 | 29 | 29 | closed | - | 9 of 18 |
| 2 Sep 08:40 | 28 | 29 | open | - | 7 of 34 |
| 31 Aug 23:40 | 28 | 28 | closed | - | 3 of 17, 14 no hourly record |
| 31 Aug 07:40 | 27 | 28 | open | - | no hourly record |
| 28 Aug 01:40 | 27 | 27 | closed | - | no hourly record |
| 27 Aug 22:40 | 25 | 27 | open | - | no hourly record |
| 27 Aug 21:40 | 27 | 27 | closed | - | no hourly record |
| 27 Aug 20:40 | 25 | 27 | open | - | no hourly record |
| 27 Aug 17:40 | 27 | 27 | closed | - | no hourly record |
| 27 Aug 10:40 | 25 | 27 | open | - | no hourly record |
| 22 Aug 00:40 | 25 | 25 | closed | - | no hourly record |
| 21 Aug 11:40 | 24 | 25 | open | - | no hourly record |
| 18 Aug 18:40 | 24 | 24 | closed | - | - |
How readings and alerts work
Dated seat counts can be available even when hourly check history is missing. Gaps do not show whether seats changed between observations.
Seat counts show the last successful read, not live availability. Refreshes can be delayed by request limits or upstream interruptions. Watched sections receive priority, but an hourly update for every section is not guaranteed.
The registrar can change a seat count between our checks. Alerts depend on dibs detecting an opening and completing delivery; a quiet watch does not prove that no seat opened. Check the registrar before enrolling.
Class chat
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Dis 1B shares one room with Lec 1 and every other discussion under it, because that is what a student means by "my class".
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