Question

FLUX: Which of the following will NOT increase the flux of a vital substance in an animal?

Group of answer choices

increasing the thermal conductivity, K

Increasing the area of a contact between the animal's body and the environment

Increasing the partial pressure gradient of a gas across a membrane

Increasing the concentration gradient between two compartments separated by a membrane

Increasing the thickness of a layer of fat under an animal's skin

Answer 1

Ans:- Increasing the thickness of a layer of fat under an animal's skin.

Because as thickness of memebrane increases rate of diffusion or flux of substance deceases as substance have to travell more resistance.

Concept:- it's just like princle of diffusion.

Rate of flux is directly proportional to area, partial press gradient, temp, diffusion coefficient.

and is inversely proportional to thickness of membrane.

so let's see the options

i) inc in thermal conductance will increase the rate of diffusion of substance.

ii) more the area of contact more will be diffusion of oxygen between body and environment.

iii) true , see concept

iv) incr conc gradient increase diffusion