He replies to emails incredibly fast and doesn't mind if you ask him the very basic questions! His lecture is very engaging and connects the materials to real-life applications. His tests were fair and really required a thorough understanding of the material but manageable! Definitely one of the greatest STEM professors I have ever had!

One of my favorite professors! Homework is 20% (always got 100%), section is 4%, lowest midterm is 12%, highest midterm is 24%, and the final is 40%. Tests were comprehensive and required critical thinking but were always fair. Also, I don't like math, but Lior actually made proving derivatives fun! (it's clear he really cares for his students)

Hard course, but great professor. He is amazing in his lectures and actually cares about his students. Stops during lectures to answer all questions and make sure everyone is following along, 10/10. His homeworks are kinda lengthy and difficult but his practice tests/problems prepare you so well for the real tests. Awesome guy

Quick email replies show that he cares a lot about his students. The fact that every topic he covers throughout the quarter intertwines with each other is extremely inspirational. Many EC opportunities. Exams are hard but fair. Handwritings and the audio of recorded lectures need some improvements. One of my fav professors in the department. S tier

Incredible professor. Class was challenging but by far my favorite that I have taken!

Chill guy, truly passionate. I was scared for this class, but he made it fairly accessible, and the partial credit on exams was SUPER generous as long as you were able to display your understanding of the content. Expect to study a good amount, but the total amount of content is bearable. I would recommend! BTW do the extra credit!

One of my favorite professors at UCSB so far. It is a challenging class, but he explains every topic very thoroughly and makes sure students understand it, rather than leaving it up to us to learn on our own time. Homework can be long, but helpful in the end because they are similar to the tests. Tests are fair and relate directly to lectures.

One of my favorite profs in the chem department. Very accessible outside of class and truly cares about his students. His homework is easy but tests can be tricky (but fair)

Challenging class, but a great professor. He truly wants to see us succeed and makes his expectations very clear. He gives you everything you need to succeed, it's just a matter of you putting in the time/effort. He made the material really interesting and connected it with real-life examples. 10/10 this is how difficult classes should be taught.

Math and concept heavy class. Our averages were a bit lower than he expected which might be due to how he lectures, in my opinion. He explains it great for the people who get high Bs and As but not for the rest and the lectures and explanations feel catered towards them mostly. Go to OH & review sessions, those should help.

He is very helpful, perhaps too helpful. He really spend a lot of time to explain stuffs that people don't really understand, but that makes the class a bit too slow. However, I guess pchem for biochem students isn't really a tough course, so he's probably a fairly reasonable professor.

Professor Sepunaru has to be one of the best professors I've had so far. His lectures are engaging and really makes you think about the real life implications of the stuff you learn. He is extremely encouraging and is there to help you succeed. Go to office hours and don't be afraid to ask questions.

Three words: For The Students. Dr. Sepunaru is my favorite professor at UCSB and for good reason, his lectures are interactive and make you think about real biological applications of the course content. As a biochemistry major in the MCDB department, I'm sad that I can't take more classes with him at the helm. Take this class with him if you can!

Lior is one of the best professors I've had so far as a junior at UCSB. He takes his time in lecture to make sure everyone understands. His office hours are very interesting and helpful as well. I would totally recommend having him as a professor.

Prof. Sepunaru's honor class was probably trying to cover a semester worth of topic in a month and expecting student to have in-depth understanding in contrast to regular chemistry elsewhere. He did amazing lectures, but if you skipped reading then the lecture will be very demanding. Grading was very generous, like I don't feel I deserve the grade

Overall, Professor Sepunaru was a good lecturer. Homework was very time-consuming and required you to read the textbook and do some research. Go to his office hours because they provide helpful details about homework and exams. However, his homework and lectures don't prepare you enough for the exam so make sure you digest the topics thoroughly.

Professor Sepunaru was a great lecturer. Each lecture was structured to maximize engagement and often consisted of topics that were both important and interesting. He was easy to reach outside of class and regularly hosted office hours, which were almost like extra lecture sessions each week. Exams were difficult, but they inspired people to think!

One of the best chemistry professors I have experienced. I enjoyed the straightforward communication when any confusion occurred. Also, the lecture is fluent in that it depends on the students' struggles. Although this had some downsides (not able to cover the entire topic), valuing the students' understanding of the concepts was great.

Simply the best professor I had. His lectures and exams are intellectually demanding and he expected you to have a much deeper understanding of the concept compared to Chem 1B. Much emphasis is put on mathematical proof and if you have poor background in calculus (like me) you will suffer. However it still worth the price because he is amazing

One of the best educators I have had! If you have a genuine interest in the material you will succeed. Although content is inherently tough, as he pulls heavily from physical chemistry topics, the applications in exams are doable if you truly understand the material conceptually. Go to office hours! He is very accessible and friendly.

Dr. Sepunaru is one of the most down to earth professors in this department. Unlike some of the professors in this department who will laugh in your face for asking dumb questions or rush through material without explanation, he really teaches for your understanding. Pchem is still difficult, but the vibes of his classes are phenomenal.

100% my favorite professor at UCSB. He so easily grabbed my attention every lecture. I loved how he makes a lecture feel like a small discussion section by asking many questions. All of his assessments were reasonably fair and graded very easily. Everything was communicated very clearly and overall, he made this class a good experience.

Liron is great at having a great vibe every time and maintains the interest and engagement level high. It is a pleasure being his student

If you like chem and are willing to put in the time, you'll LOVE Sepunaru. He's an awesome guy, really cares about every one of his students as well as the subject. But his tests are very very difficult so just make sure you know what you're getting into!