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, the sum of the chemical processes of the body, may be divided into two phases. Anabolism refers to chemical processes which are constructive, or synthesizing of body tissues, enzymes and other body components.Catabolism generally refers to those processes in which body tissues and components are breaking down into simpler metabolic constituents.These two processes always coexist, although one may dominate at times over the other.n response to stress, the body secretes epinephrine, norepinephrine, cortisol and other hormones. The glucocorticoids (such as cortisol) have a catabolic action. That is, they suppress the synthesis of protein, glycogen and triglycerides.