QCM : Fundamentals of Biological and Chemical Systems — 4 questions

Explication

Neurotransmitters are defined as chemicals that transmit signals across synapses between neurons, distinguishing them from hormones or electrical signals. Review: Nervous and hormonal system functions and interactions. Course evidence: "- Nervous system: biological network that transmits rapid electrical signals through neurons to coordinate immediate responses. - Hormonal system: network that releases chemical messengers (hormones) into the bloodstream for slower, longer-lasting…"

Explication

Fermentation is defined as an anaerobic process converting sugars into energy and byproducts such as alcohol or lactic acid, distinguishing it from aerobic or photosynthetic processes. Review: Fermentation processes and applications. Course evidence: "Fermentation: anaerobic process converting sugars into energy and byproducts like alcohol or lactic acid."

Explication

Equilibrium is defined as the state where forward and reverse processes occur at equal rates, resulting in stable concentrations, distinguishing it from mere distribution or unidirectional processes. Review: Distribution and equilibrium principles in biological and chemical systems. Course evidence: "Equilibrium: state where forward and reverse processes occur at equal rates, resulting in stable concentrations."

Explication

The source states that reaction speed depends on factors like temperature, concentration, surface area, and catalysts. Surface area is explicitly listed, while atomic mass, molecular color, and electrical conductivity are not mentioned as factors affecting reaction rate. Review: Atoms and rate of reaction speed. Course evidence: "Reaction speed depends on factors like temperature, concentration, surface area, and catalysts."