Biology is the natural science that studies life and living organisms, including their physical structure, chemical processes, molecular interactions, physiological mechanisms, development and evolution. Chris has talked a lot about biology and therefore fails hardest at it. Chris surprisingly accepts biological facts such as evolution and vaccines which many Christians reject. Nevertheless, he still has facts jumbled up and would often end up speaking nonsense when speaking about these topics.
One of the most well known facts about Chris is that he used to drink his semen. Chris believed that the male reproductive system has a limited amount of sperm cells that decreases every time he nuts. To counteract this supposed decrease, he drank his own semen to make sure he can get 13 year old boys pregnant. Although he has given up this act in more recent years, a video from 27 February 2016 shows that he now believes keeping semen inside his refrigerator will keep it viable not knowing that is actually kills the cells. Ultimately, the only thing this will do is give him ice cubes to use in his Fanta.
Chris also supported a claim that transgender women can get periods, which is false. Abdominal cramps are common for biological women during periods; for MTF women, this is impossible due the lack of a uterus. Feeling under the weather is also a common symptom of periods caused due to changes in hormones released by the female brain and uterus since Chris lacks both a uterus and a brain he is imagining his symptoms.
Chris thinks the penis is an outwardly grown clitoris. 
Chris thinks that it's possible to grow a labia underneath ones taint by listening to special audio files and that it can be freed by slicing a hole with a kitchen knife.
Having been a virgin with rage in the past, Chris's constant involvement with sex dolls and piles upon piles of porn have warped his perception of what a vagina truly is. Having used sex dolls, Chris often locates the vagina as higher than it should be (i.e; below the belly button), indicating that he thinks that vaginas are located on a woman in the same place that a penis is on a man. One of the photos that Chris uploaded in his edit war against Encyclopedia Dramatica features Mary Lee Walsh. Walsh is depicted stroking her genitalia, wanting a Jerkop slave to lick her pussy. Her vagina is clearly deformed, having the ability to stretch as much as Chris depicted, opening at the diameter of a normal person's hand-span, something that can only be achieved through years of fisting, meaning Count Graduon has been of more use to her than once implied.
Another instance of Chris proving his ignorance of basic female anatomy is the infamous ShecameforCWC.JPG image. Not only is Megan's torso completely straight and has no waist, but once again Chris makes the vaginal opening far too large and uses blue lines to depict her squirtin', causing it to look like she has blue pubic hair or her vagina is glowing.
Chris rejects the notion that Asperger's syndrome is equal to autism, though it is a well proven fact in the scientific community. He thinks that people with Asperger's steal the limelight from people with autism, though this doesn't make any sense since not only are both of them on the same spectrum, but Asperger's is considered the same as the high-functioning autism that Chris is quick to call himself.
Chris believes that the mind and body are separate entities where the mind can move between different bodies I.e the body is nothing more than a vessel for his mind. This has never been proved and most research points to different inter-neuronal connections being the reason for different personalities.
Health and Disease
Chris relationship with health and disease is hit or miss that is, he is hit with diseases and misses health.
During the COVID-19 pandemic Chris refused to learn about the symptoms of the virus saying it will make him more prone to being infected. He also watched the anime Cells at Work, a series featuring anthropomorphic blood cells taking care of a human body and claimed it would boost his immune system. Possibly thinking being worried of the disease will weaken his immune system and being happy will increase his immunity.