What makes a semipermeable membrane selective for one chemical species but not another?
A) The pores in the membrane select by size, they are big enough for water only.
B) The material is hydrophilic and therefore only allows water through.
C) The material is hydrophobic and therefore only allows water through.
D) The material chemically reacts with everything but water.
E) none of the above
Question 2
Which of the following accurately describes osmosis?
A) The more concentrated solution absorbs water from the less concentrated solution.
B) The less concentrated solution absorbs water from the more concentrated solution.
C) The less concentrated solution gets more dilute.
D) The ions migrate from the more concentrated solution to the less concentrated.
E) none of the above
Structure and function of a chemical synapse.
In one-male group species, extra males typically reside in all-male “bachelor” groups. These are Han
The cell membrane, cytoplasm, nucleus, and nucleolus.
Co-translational insertion and folding of transmembrane helices in an integral membrane protein
Typical characteristics of r-selected and k-selected species
Zooming in on the respiratory membrane in human lungs