Focuses on the general biology in microbes, primarily prokaryotes. Topics include the structure, physiology, and development of microorganisms and microbial communities, their culture and control, microbial genomics & metagenomics, and the importance of diverse microbes in food, agriculture, ecology and medicine.

Prerequisites: MCDB 101A; Chemistry 109A-B-C (Chem 109C may be taken concurrently), or Chemistry 109A-B and MCDB 110. Completion of all listed prerequisites with a grade of C or better.

4

Units

Letter

Grading

1

Passtime

None

Level Limit

Letters and science

College
Unlocks MCDB 131L
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HAYES C S
Chris Hayes
3.1
23 reviews
ILP 3211
M
16:00 PM - 16:50 PM
24 / 25

ILP 3314
M
17:00 PM - 17:50 PM
24 / 25

ILP 3312
M
15:00 PM - 15:50 PM
25 / 25 Full

ILP 3314
T
08:00 AM - 08:50 AM
24 / 25

ILP 4207
T
17:00 PM - 17:50 PM
19 / 25

ILP 4101
T
18:00 PM - 18:50 PM
8 / 25

ILP 4107
M
11:00 AM - 11:50 AM
24 / 25

ILP 3211
M
18:00 PM - 18:50 PM
12 / 25

ILP 3312
T
16:00 PM - 16:50 PM
19 / 25

Fall 2025 . Low S H
BRDA 1610
M W F
10:00 AM - 10:50 AM
See All
MCDB 131 Hayes C S Fall 2024 Total: 174
MCDB 131 Hayes C S Fall 2023 Total: 168
See All
23
3.1
MCDB131 . Hayes C S 5 Months Ago

Professor Hayes is a unique guy. He's nice, understanding, and very knowledgeable, but sometimes he's blunt. A lot of material isn't found in the notes, so definitely show up to lecture. Provides study guides and practice tests. Grade is made up of exams only, textbook was a good supplement but not necessary. Exams seemed very fair to me.

0 helpful 0 unhelpful
MCDB131 . Hayes C S 1 Year, 5 Months Ago

Lectures are not recorded and final grade is based off 2 midterms (20% each) and final exam (60%). Or one midterm can be dropped and the final can count for 70% of your final grade. The first exam was easy, but the second two had low averages. I would avoid this class and prof. if possible.

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MCDB131 . Hayes C S 1 Year, 6 Months Ago

At the beginning of this class he told us a story about how a kid hucked a loogie on the sidewalk, how nasty that was, and how he told the kid off. After taking this class...I wanna huck a loogie right next to his feet. Material is really really dry, very condescending, fact dumps, and is just really boring.131L is cool and helps the lecture.

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MCDB131L . Hayes C S 1 Year, 6 Months Ago

Hayes is straightforward about what info he is going to test on. Grade is 20% m1, 20% m2 and 60% final. He lets you drop 1 midterm if it benefits your grade. For 131L- switch to a new TA if you have Kaitlin S. She was outwardly rude to students and made the class environment very uncomfortable. Worst TA i have had at UCSB

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MCDB131 . Hayes C S 2 Years Ago

Hayes is incredibly condescending during lecture, and writes exams by whim that include information from one slide that is entirely irrelevant to the rest of the course. It is really easy to do sufficiently well in this class, but incredibly difficult to take away any useful information or actually learn anything. Would not take again.

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MCDB131L . Hayes C S 2 Years Ago

This was so far the easiest MCDB lab I have taken. The exams were all online. Also the experiments were very low stakes, not like O Chem labs where if you really messed up you would miss a bunch of points.

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See all 23 reviews
MCDB 126
93 / 96 Enrolled
Basic Pharmacology
Olga Azarenko 2.8
M W F
08:00 AM - 08:50 AM
30.3% A
MCDB 126AL
20 / 22 Enrolled
Pharmacology Lab I
Stoyan T
W
10:00 AM - 17:30 PM
67.4% A
MCDB 131L
22 / 19 Closed
Laboratory in General Microbiology
Chris Hayes 3.1
M W F
08:00 AM - 09:50 AM
61.7% A
MCDB 131L
22 / 19 Closed
Laboratory in General Microbiology
Chris Hayes 3.1 Steven Gross 4.3
M W F
11:00 AM - 12:50 PM
61.7% A
MCDB 131L
19 / 19 Closed
Laboratory in General Microbiology
Chris Hayes 3.1 James McNamara 4.8
M W F
16:00 PM - 17:50 PM
61.7% A
MCDB 131L
22 / 19 Closed
Laboratory in General Microbiology
Chris Hayes 3.1
M W F
14:00 PM - 15:50 PM
61.7% A