BIO 210 (bio210)

What are the functions of integumentary system: (Ans- protection, regulation of temperature, formation of vitamin D, acts as a sensory organ, accessory organ for excretion. Functions of pigment melanin are: (Ans- protection from UV rays, responsible for skin color, melanin increases during exposure to sun causing tanning. Water loss due to evaporation of fluid that has penetrated through the skin is termed __________ _____________. (Ans- insensible perspiration Children in northern regi...

endergonic (Ans- reaction that stores energy, products have more energy than the reactants exergonic (Ans- chemical reaction that releases some form of energy, such as light or heat. endothermic (Ans- describes a reaction that absorbs energy from the surroundings exothermic (Ans- of a chemical reaction or compound) occurring or formed with evolution of heat what factors can increase the rate of a chemical reaction (Ansincreased temperature decreased particle size increased concentr...

why is water neutral? (Ans- Because it dissociates very easily an acid dissociates in water to produce (Ans- H+ and an anion acid (Ans- proton donor base (Ans- accepts H+ when added to a solution Base (Ans- also called a proton acceptor solutions with equal concentrations of H+ and OH (Ans- are neutral and have a pH of 7 solutions with greater H+ are (Ans- acidic, pH < 7solutions with greater OH (Ans- are basic, pH > 7 neutralization (Ans- occurs when an acidic or basic sol...

which of the following individuals would have the greatest concentration of brown fat? (Ans- young infants A flat, sheetlike tendon that connects muscle to bone is known as _________. (Ans- an aponeurosis a multicellular gland with round secretory cells and branching ducts is described as _______. (Ans- alveolar, compound, and exocrine the stroma of most lymphoid organs is composed of _________. (Ans- reticular connective tissue an injection is administered through the skin using a hy...

Define enzyme. (Ans- A globular protein that acts as a biological catalyst (increases the rates of chemical reactions within the body) Define substrate. (Ans- The substance that an enzyme acts on Differentiate between RNA and DNA. Name the monosaccharide found in RNA and name the monosaccharide found in DNA. List the nitrogenous bases found in RNA and in DNA. (Ans- RNA: ribonucleic acid - functions in protein synthesis, monosaccharide is ribose, nitrogenous bases are adenine, guanine, ...

What effect do enzymes have on chemical reactions in which they are involved? (Ans- speed up chemical reactions without changing the reaction. What is the "lock-and-key" concept as it relates to enzymes? (Ans- explains the way an enzyme/substrate reaction occurs through a metabolic pathway Hydrolysis (Ans- a chemical reaction in which water reacts with a compound to produce other compounds Diffusion (Ans- the process by which molecules move from an area of higher concentration t...

Functions of Water in the Body (Ans- transports substances, lubricates (decreases friction), cushions (absorbs sudden force), excretes wastes Cohesion (Ans- attraction between water molecules due to hydrogen bonding Surfactant (Ans- necessary to prevent collapse of the alveoli in the lung because in its absence water molecules surface tension (Ans- cohesive forces pull inward from the surface of water; water has a high surface tension. adhesion (Ans- water is attracted to o...

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