객관식
An Elodea leaf cell is placed in a hypertonic solution relative to its cytoplasm. Which outcome best describes what will happen due to osmosis?
83
views
9. Transport Across Membranes
Passive Transport: Diffusion and Osmosis
객관식
In passive transport, how does increasing temperature generally affect the rate of diffusion of small molecules across a membrane or through a fluid?
A
It stops diffusion by eliminating the concentration gradient.
B
It has no effect on the rate of diffusion because diffusion depends only on concentration gradient.
C
It increases the rate of diffusion because molecules have greater kinetic energy and move faster.
D
It decreases the rate of diffusion because higher temperature increases molecular mass.
검증된 단계별 안내1
Step 1: Understand the concept of passive transport and diffusion. Passive transport is the movement of molecules across a membrane without the input of energy, driven by the concentration gradient.
Step 2: Recall that diffusion rate depends on factors such as concentration gradient, temperature, and the kinetic energy of molecules.
Step 3: Recognize that increasing temperature increases the kinetic energy of molecules, causing them to move faster.
Step 4: Faster molecular movement leads to an increased rate of diffusion because molecules cross the membrane or move through the fluid more rapidly.
Step 5: Conclude that increasing temperature generally increases the rate of diffusion, not stops or decreases it, and it does not eliminate the concentration gradient or affect molecular mass.
관련 영상
관련 실천
