#Bloganuary Day 14

Write about a challenge you faced and overcame.

I’ve faced a number of challenges and overcome (most of) them, or faced up to not overcoming them. But the important ones aren’t fodder for this blog.

A minor challenge that comes to mind:

Two summers after receiving my B.A. with a minor in biology, I returned to college to take an undergraduate course in microbiology. I thought it would be fun.

I had not taken the prerequisite chemistry courses—organic chemistry and biochemistry, if I remember correctly—but nobody at the registration table asked, and I didn’t volunteer the information. I guess they assumed I’d read the requirements in the catalog. I assumed that what they didn’t know wouldn’t hurt them.

I spent the next five weeks growing, staining, and identifying bacteria.

I also spent five weeks memorizing where and at what angles to hang little H’s and O’s and N’s and other letters from little C’s, over and over and over, so I could draw the metabolic processes of bacterium after bacterium after bacterium on exams.

That was the prerequisite part. My fellow students already knew what those compounds looked like.

But I persisted—lecture and lab during the day, little C’s and H’s and O’s at night.

Things went well. That was back when my brain had space in which to stuff all those letters and the ability to spill them out into the right places on test papers.

When I turned in my final exam, I told the professor (a) I’d enjoyed the class; (b) I hadn’t had the prerequisites; and (c) good-bye.

It was a fascinating course. I’ve never regretted taking it.

But that was a long time ago. I’ve since altered my definition of fun.

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Image by Clker-Free-Vector-Images from Pixabay

Image of D-glucose by Ben; Yikrazuul, Public domain, via Wikimedia Commons

#AtoZChallenge 2020: O Is for Obligate

Again I am reduced to browsing through the Os in the dictionary to come up with a topic. Maybe it’s isolation, maybe it’s inactivity, maybe it’s too much original Law & Order, maybe it’s general cussedness, but whatever it is—I will not dignify it by calling it writer’s block—I’m grateful to Dr. Samuel Johnson and his literary descendants for aiding in the A to Z endeavor.

Disclaimer: Anything in this post that sounds like science only scratches the surface. Don’t believe it.

The first thing that jumps out on the O page is names:

The second thing that jumps out is that although the lexicographer included the name of a Supreme Court justice, an artist, a playwright, and a fictional character, he didn’t include Peter O’Toole. That’s a great failing. Surely Peter O’Toole deserves as much attention as Scarlett O’Hara.

The third thing that jumps out is

The phrase has been stuck in my brain since 1976, when I took a summer course in microbiology. I’d gotten my degree three years before but thought spending several hours a day in lecture and lab, growing and observing little dots under a microscope for five weeks, would be fun. That says something about my concept of fun.

Obligate parasite stands out because of the professor’s indignation over the misuse of the word mildew—in TV commercials, for example, advertising detergent to wash mildew out of clothing.

“It’s not mildew,” he said. “It’s mold. Mildew is an obligate parasite!” He said it several times during the semester.

Since 1976, every time I’ve come across the word mildew, I’ve thought obligate parasite.

Wandering around the ‘net, I came across claims that mildew can grow on some natural fabrics, such as cotton. I’m not qualified to speak to that. I’ll stick with what I learned in the micro course, most of which wasn’t about mold and mildew. I also noticed authors often use mildew and mold interchangeably.

I’ve always wondered, though, about the phrase obligate parasite. It sounds redundant. Doesn’t the word parasite mean that it’s obligated to a host?

With the world at my fingertips, I googled and discovered that there’s also a facultative parasite.

Obligate parasites can survive only with the presence of a host. Facultative parasites can pass important stages of their lives without a host.

A virus is an obligate parasite.

Which brings us back to where we’d rather not go but can’t get away from.

Oh, well.

I looked at pictures of parasites but decided to post one of Peter O’Toole instead.

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The microbiology course was fun.

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Image of Peter O’Toole via Wikipedia. Public domain.