Animal Physiology Exam 5 Part 1

why is oxygen important during metabolism

final electron acceptor and forms metabolic water

how does CO2 affect tissues

increases acidity

how does excess CO2 affect environment

ocean is absorbing CO2, making it more acidic

how do gas molecules move/diffuse

from high to low partial pressure

the pressure a single gas in a mixture would exert if it occupied the entire volume alone

partial pressure

in air, how are partial pressure and proportion/concentration of gas related

directly

partial pressure of gas formula

P_x=F_xP_tot (Fx is proportion of gas)

what is the partial pressure of oxygen at sea level if the proportion of gas is 0.2095

0.2095 atm (total is 1 atm at sea level)

relationship between partial pressure of gas in aqueous solution and air

in equilibrium

in aqueous solutions, the partial pressure of a gas depends on? so formula is?

concentration and solubility / C_x=AP_x (A is solubility absorption coefficient)

solubility changes depending on?

gas, solution, and temperature

relationship between O2 solubility and salinity/osmolality

decreases with increased salinity

how does O2 solubility change with temperature

decreases with increased temperature

how to find concentration of O2 in air

P = (n/V) *RT

t or f: gas in solution equilibrates with whatever body of air it interacts with most directly

t

how is a beetle’s water bubble a dynamic source of oxygen

total pressure increases deeper in water so partial pressures of oxygen and nitrogen increase. However, beetle is consuming oxygen so PO2 actually goes down and thus O2 diffuses inside bubble. PCO2 doesn’t change much because theres hardly any CO2 in water so it diffuses out as quickly as it comes in. PN2 increases to compensate total pressure and thus N2 diffuses out