Biology, 20.02.2020 19:14, danielanderson12
Various characteristics of the lipids in a membrane contribute to its fluidity-- which in turn determines how easily molecules can diffuse into and out of the cell across the membrane. Which of the following statements about this topic are correct?
A. Longer fatty acid tails of phospholipids make the membrane less fluid, thus slowing diffusion.
B. A higher concentration of saturated fatty acid tails of phospholipids makes the membrane less fluid, thus slowing diffusion.
C. At ambient temperatures (temperatures typically found in a cell), cholesterol stiffens the membrane, reducing fluidity and diffusion.
D. A higher concentration of unsaturated fatty acid tails of phospholipids makes the membrane less fluid, thus slowing diffusion.
Answers: 1
Biology, 21.06.2019 16:30, monayemcnett11
25) a student takes four samples of a white crystalline solid and places each in a well plate. on top of each sample, she carefully places 20 drops of clear mystery liquids a, b, c and d. her results for each well are: liquid a: the solid dissolves quickly. liquid b: the solid appears unchanged. liquid c: a brownish colored liquid is produced. liquid d: fizzing occurs and the well becomes warmer. in which well does a physical change occur?
Answers: 3
Biology, 21.06.2019 21:30, faithchambers15
What is the difference between bacterial infections and viral infections?
Answers: 1
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