Biology › Hormonal communication, plant responses and homeostasis

Hormonal communication, plant responses and homeostasis

Unit B15 · 4 lessons published so far.

• Hormones: a message broadcast in the blood that only some cells can read
  Exocrine and endocrine glands, the hypothalamus and the two lobes of the pituitary, why a peptide hormone needs a second messenger and a steroid…
• Blood glucose: two hormones, one liver, and two different diabetes
  The normal blood glucose concentration and where glucose comes from, the islets of Langerhans, insulin and glucagon and their effects on the liver…
• The kidney: filter everything, then take almost all of it back
  The structure of a nephron, ultrafiltration and the basement membrane, selective reabsorption at the proximal convoluted tubule, the loop of Henle as…
• Plant responses: tropisms, auxins and the classic experiments
  Tropisms and how they are named, the classic coleoptile experiments and the single conclusion each supports, auxin and cell elongation through wall…