the membrane that separates the fetal from the maternal blood in the placenta. plasma membrane. the membrane that encloses a cell; it is composed of phospholipids, glycolipids, cholesterol and proteins.The primary structure is a lipid bilayer.lacental membrane the membrane separating the fetal from the maternal blood in the placenta; sometimes inappropriately called the placental barrier. Placental membrane separating the blood in the fetal capillaries from the maternal blood in the intervillous space.
Define metabolism, and describe the fundamental differences between anabolism and catabolism. p. 112 metabolism- refer to the sum of all chemical reactions within a living organism. catabolism- (energy releasing) the breakdown of complex organic compounds into simpler ones; hydrolytic reactions and exergonic (produce more energy than consumed) anabolism- (energy requiring) the building of complex organic molecules from simpler ones; involve dehydration synthesis reactions and they are endergonic (consume more energy then they produce) Identify the role of ATP as an intermediate between catabolism and anabolism. p. 112 catabolic reactions provide building blocks for anabolic reactions and furnish the energy need to drive anabolic reactions. this coupling of energy-requiring and energy-releasing reactions is made possible through the molecule ATP.
Metabolism is usually divided into two categories: catabolism, the breaking down of organic matter by way of cellular respiration, and anabolism, the building up of components of cells such as proteins and nucleic acids.Usually, breaking down releases energy and building up consumes energy.nabolism is the set of constructive metabolic processes where the energy released by catabolism is used to synthesize complex molecules. In general, the complex molecules that make up cellular structures are constructed step-by-step from small and simple precursors.