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More in Biology
Is a Virus an Infection? Key Differences Explained
A virus and an infection aren’t the same thing. Learn what sets them apart and why it matters for your health decisions.
What Is the Soap Gene and How Does It Kill Bacteria?
APOL3, nicknamed the “soap gene,” produces a protein that breaks down bacterial membranes. Here’s how it works and why it spares your own cells.
What Color Are Your Eyes? The Science Explained
Eye color comes down to melanin, genetics, and light — here’s what science says about why eyes look the way they do.
What Is Normal Human Body Temperature?
98.6°F isn’t as universal as you think. Learn what normal body temperature actually means for your age, time of day, and how you measure it.
What Does Bile Break Down: Fats, Vitamins & More
Bile does more than digest fat — it helps absorb vitamins A, D, E, and K and keeps cholesterol in check. Here’s how it all works.
What Is Flexion and Extension in Anatomy?
Flexion and extension are the bending and straightening movements your joints make every day. Here’s how they work across different parts of the body.
What Does a Virus Do to Your Cells and Body?
Learn how viruses hijack your cells, spread through your body, and why your immune system — not antibiotics — is your real defense.
How Long Can Humans Live? The Science of Lifespan
Science suggests human lifespan has a biological ceiling. Here’s what sets it, how much you can influence it, and what researchers are learning about aging.
What Are Organs Made Of? Tissues, Nerves & Cells
Organs are built from four tissue types, blood vessels, and nerves working together — here’s how it all comes together from cells up.
What Does CFU Stand For? Colony Forming Units Explained
CFU stands for colony forming unit, a way labs count living bacteria. Learn why it’s used on probiotic labels, in water testing, and what its limits are.
Why Are Stem Cells Important in Modern Medicine?
Stem cells can repair damaged tissue, treat disease, and grow lab organs. Here’s how they’re already changing medicine and where research is headed.
What Is My Biological Age and How Is It Measured?
Biological age reflects how well your body is aging, not just your birthdate. Learn how it’s measured and what the results actually tell you about your health.
What Is Plasma Made Of: Blood’s Key Components
Plasma is mostly water, but its proteins, electrolytes, and dissolved substances do the real work of keeping your blood balanced and your body running.
How Do mRNA Vaccines Work? From Instructions to Immunity
mRNA vaccines teach your cells to recognize a threat without using live virus. Here’s how they work and why they can’t alter your DNA.