The phospholipids of plasma membranes are amphipathic: they have both hydrophilic and hydrophobic regions. The hydrophobic core
of the plasma membrane helps some materials move through the membrane, while it blocks the movement of others. How does the
structure of the cell membrane help to enable its function?

A)The double layer of phospholipids positions the hydrophilic lipid tails on
the inside, away from the external environment and the the watery
cytoplasm.
B)The double layer of phospholipids positions the hydrophilic lipid tails on
the outer edge towards the external environment and on the inner side
towards the watery cytoplasm.
C)The double layer of phospholipids positions the hydrophilic phosphate
heads on the outer edge towards the external environment and on the
inner side towards the watery cytoplasm.
D)The double layer of phospholipids positions the hydrophobic phosphate
heads on the outer edge towards the external environment and on the
inner side towards the watery cytoplasm.

Which of the following is not considered an appendage of the skin? nails glands follicles none of the above

Scenario 5 1) take 10 red and 10 black beans and place them, mixed, on the table. record the starting phenotype # and frequencies (% of your total population) of your starting population in the table provided (generation 0). 2) act as a predator. “capture” as many organisms as you can until you have reduced the population to three organisms. put them aside. at this point, the predators die. 3) the remaining organisms each produce 2 clonal offspring. multiply your organisms accordingly and allow them to mix on the table. calculate and record the resultant phenotype # and frequencies (% of your total population) of your population in the table provided (generation 1). 4) repeat the reproduction event, allowing each of your organisms to produce 2 clonal offspring. calculate and record the resultant phenotype # and frequencies (% of your total population) of your population in the table provided (generation 2). 5) repeat the reproduction event, allowing each of your organisms to produce 2 clonal offspring. calculate and record the resultant phenotype # and frequencies (% of your total population) of your population in the table provided (generation 3).

If your blood becomes too concentrated with iona, what will happen to the red blood cells