Suppose water moves across a membrane from an area of high water concentration to an area of low water concentration. What is this an example of?
a. both diffusion and osmosis
b. both osmosis and active transport
c. both diffusion and endocytosis
d. both endocytosis and active transport
Ans: a. both diffusion and osmosis
You might also like to view...
ADH alters reabsorption in target cells by affecting
a. countercurrent flow in the loop of Henle. b. active transport mechanisms involving chloride ions. c. self-assembly of aquaporin subunits. d. thirst-center osmoreceptors. e. cerebral cortex signals that stimulate fluid intake.
XYY males tend to
a. have reproductive problems. b. be slightly retarded. c. have learning disabilities. d. be sterile. e. develop normally.
Epithelial cell shapes and arrangements include: (check all that apply)
A. rod-shaped. B. columnar. C. transitional. D. symmetric. E. stratified.
Which of the following is false about the tropical disease African sleeping sickness?
A) It is carried by a blood-sucking mosquito from host to host. B) It induces an immune system reaction so strong that host neutrophils can harm host neurons. C) If the disease goes untreated, it is fatal. D) Those infected cannot sleep at night and cannot stay awake during the day. E) It is caused by the flagellated protozoan Trypanosoma brucei.