Biology Page 251

More in Biology

  1. What Does Precursor Mean in Science and Medicine?

    A precursor is anything that comes before and gives rise to something else. Here’s what that means in biology, medicine, and chemistry.

    By Hye-jin Yoon
  2. What Is the Function of Plastids in Plants?

    Plastids do far more than power photosynthesis. Learn how these plant organelles store nutrients, create color, sense gravity, and convert between types.

    By Erica Winters
  3. Which Hand Is Better to Write With? The Science

    Your brain chooses your dominant hand for good reasons. Here’s what science says about handedness, switching hands, and whether one is truly better.

    By Jessica Knox
  4. Why We Don’t Have Free Will: The Science Explained

    Science suggests our choices are shaped by brain activity, genes, and physics before we’re even aware of them—and what that means for daily life.

    By Natalia M. Lebedeva
  5. Is Peptidoglycan a Protein? What It Really Is

    Peptidoglycan contains peptides but isn’t a protein. Learn what it actually is, where it’s found, and why it’s a key target for antibiotics.

    By Tracy Moyer
  6. What Cells Does Meiosis Occur In? Germ Cells Explained

    Meiosis happens in germ cells to produce eggs and sperm. Learn how this cell division works, how it differs between sexes, and what happens when errors occur.

    By Erica Winters
  7. Are Yeast Cells in Dry Yeast Actually Active?

    Dry yeast cells are alive but dormant — here’s what’s happening inside them, how they survive drying, and what it takes to wake them up.

    By Andrew Coleman-Shanahan
  8. Where Is Pyruvate Made in the Cell: The Cytoplasm

    Pyruvate is made in the cytoplasm through glycolysis and other pathways, and its location shapes what the cell can do with it next.

    By Carly Pierce
  9. Is Hair Color Categorical Data? Nominal, Not Ordinal

    Hair color is categorical, nominal data — it has no natural order or ranking, which shapes how you analyze and encode it.

    By Lourdes Sandoval
  10. What Makes an Amino Acid Polar or Nonpolar?

    An amino acid’s polarity comes down to its side chain. Learn how side chain chemistry influences protein folding and function.

    By Hoa Tran
  11. What Are the Reactants of Alcoholic Fermentation?

    Alcoholic fermentation turns sugars into ethanol and CO₂ using yeast. Learn what reactants drive the process and why oxygen plays no role.

    By Andrew Coleman-Shanahan
  12. Which Term Means Clotting Cell? Thrombocyte

    Thrombocyte is the medical term for clotting cell, better known as a platelet. Learn what platelets do, what a normal count looks like, and related terms.

    By Farah Hopkins
  13. Where in the Chloroplast Does the Calvin Cycle Occur?

    The Calvin cycle takes place in the stroma of the chloroplast, where the right enzymes and conditions allow plants to turn CO2 into sugar.

    By Jamal Okafor
  14. How Do Observations Relate to Hypotheses?

    Observations and hypotheses shape each other in a continuous cycle. Learn how scientists move from noticing patterns to forming and testing ideas.

    By Lourdes Sandoval