ALSO DUE SOON: A cell needs to transport materials across the cell membrane. Which of the following best describes the type of t
ransport shown here? A. active transport, because energy is NOT required for the materials to cross the cell membrane B. active transport, because energy is required for the materials to cross the cell membrane c. passive transport, because energy is NOT required for the materials to cross the cell membrane D. passive transport, because energy is required for the materials to cross the membrane
Carbon is a primary component of all known life on Earth, representing approximately 45–50% of all dry biomass. Carbon compounds occur naturally in great abundance on Earth. Complex biological molecules consist of carbon atoms bonded with other elements, especially oxygen and hydrogen and frequently also nitrogen, phosphorus, and sulfur
No, the retroverted uterus does not cause accumulation of free fluid in the pouch of Douglas. Rather, an inflammation of the reproductive systems causes it. It is also present in between the menstrual cycle.
Parietal cells are the epithelial cells of the stomach that have the function to secrete hydrochloric acid (HCl) and intrinsic factor. Parietal cells contain canaliculi – secretory network for the secretion of HCl via active transport.
Parietal cells are regulated via several factors such as acetylcholine, gastrin and histamine. So, if histamine receptors are blocked via antacid drugs , the secretion of the acid will be reduced.