Jack Westin MCAT Podcast

Vesicles don't just float where they need to go. They're driven there, on tracks, by literal motor proteins. Here's how that actually works.

In this episode of the Jack Westin MCAT Podcast, Mike and Molly finish their cell trafficking series by answering the question the secretory pathway episode left open: how do vesicles actually move through the cell? The answer involves microtubule highways, two different motor proteins, and a whole system for bringing things into the cell that viruses have learned to exploit.

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A protein has no idea where it's going. So how does it end up exactly where it needs to be, inside the nucleus, in the mitochondria, or shipped out of the cell entirely?

In this episode of the Jack Westin MCAT Podcast, Mike and Molly pick up where cell biology left off. After breaking down individual organelles in the last episode, they now tackle the mechanism that connects them all: the endomembrane system and the secretory pathway. This is the process by which proteins get tagged, routed, folded, modified, and shipped to their final destination, and it's one of the most overlooked-yet-testable systems on the MCAT.

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Sealed cans, mysteriously empty. A puddle that appears out of nowhere. What does any of this have to do with land ownership? Everything.

In this episode of the Jack Westin MCAT CARS Podcast, Hunter and Molly break down a passage that starts like a supernatural mystery and ends as a sharp political and philosophical argument about land, ownership, and Indigenous belief in Papua New Guinea. They model exactly how to read a passage that shifts tone and topic mid-stream, without losing the thread.

This passage covers anthropology and land rights, a topic combo that can feel unfamiliar, but the underlying skills (tracking contrast, spotting conclusions, separating detail from argument) apply to every CARS passage you'll see on test day.

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Are you more bacteria than human? The answer might surprise you, and it's just the beginning of this deep dive into cell biology.

In this episode of the Jack Westin MCAT Podcast, Mike and Molly go inside the cell. After covering membrane transport last episode, they now unpack everything happening on the other side of that membrane, from the nucleus outward into membrane bound organelles like the mitochondria (and its wild evolutionary story), while contrasting important features that differentiate eukaryotes and prokaryotes.

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Can history replace literature as the way we tell the human story? A 1980s essay makes the case, and it's more entertaining than you'd expect.

In this episode of the Jack Westin MCAT CARS Podcast, Hunter and Molly tackle a passage on history and literature, one of the topics students often dread, and prove it can actually be a blast to work through. They break down the full passage sentence by sentence, modeling exactly how to map an argument in real time so you can walk into test day with a repeatable strategy.

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Can a cell control what gets in and what stays out? Here's how membrane transport actually works.

In this episode of the Jack Westin MCAT Podcast, Mike and Molly break down one of the most tested concepts on the exam: how molecules move across the cell membrane. Building on last episode's dive into lipids, they explore what makes a membrane selectively permeable and why that matters for medicine as a whole.

🎧 Next episode: Cellular trafficking, how molecules move within the cell after they cross the membrane.

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Welcome back to the Jack Westin CARS Podcast with Hunter and Molly! In this episode we walk through the August 12th daily CARS passage titled Television and Life, from Neil Postman's Amusing Ourselves to Death, a media criticism passage about how television has stopped being just entertainment and quietly become the invisible architecture of modern culture.

Fair warning: if you spend any time on a screen, this passage will make you feel deeply seen. Hunter and Molly had a lot of feelings about it too.

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Welcome back to the Jack Westin MCAT Podcast with Mike and Molly! Last episode was DNA techniques. This episode we finally give some love to the most underappreciated of the four macromolecules: lipids.

Lipids do not get the same attention as proteins or carbohydrates on the MCAT, but Mike makes a strong argument in this episode that lipids are actually the macromolecule that defines the cell. Without them, there is no inside versus outside. Without them, nothing gets concentrated, nothing gets protected, and nothing gets separated from the environment.

This episode covers everything from the chemistry of fatty acids to why fish in cold water have healthier fats than you do.

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Welcome back to the Jack Westin CARS Podcast with Hunter and Molly! In this episode we walk through the August 5th daily CARS passage titled Man the Hunter, an anthropology passage about whether early humans were primarily hunters or scavengers, and what the fossil evidence from Olduvai Gorge actually suggests.

This is a great representative CARS passage: medium density, a clear competing theory structure, and plenty of hedged language that will absolutely trip up students who are not paying attention to tone and author confidence. Hunter and Molly show you exactly how to navigate all of it.

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Welcome back to the Jack Westin MCAT Podcast with Mike and Molly! Last episode we covered DNA and RNA structure. Now we put that knowledge to work and answer the question that follows naturally: how do scientists actually study DNA, and how does the MCAT test those techniques?

This is the DNA techniques episode, and it connects back to nearly everything you have already learned including amino acids, protein structure, hemoglobin, gel electrophoresis, blotting and central dogma.

🎧 Next episode: Lipids, membrane structure, triglycerides, steroid hormones and everything you need to know about the third of the four macromolecules.

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