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The steroid lipid cholesterol is a component of membranes. Identify true statements about cholesterol and its role in membrane fluidity. Select all the true statements. Cholesterol is generally buried in the bilayer, with its planar rings oriented toward the solvent and its hydroxyl group aligned with the fatty acid tails of the bilayer. Cholesterol increases membrane fluidity in a membrane that otherwise contains mostly long-chain saturated fatty acids. Cholesterol inhibits the crystallization that would otherwise occur in membranes rich in unsaturated fatty acids. Cholesterol decreases membrane fluidity in areas called rafts, which contain large amounts of sphingolipids and cholesterol.
In cats, hair length is a trait that is controlled by a gene with 2 alleles. The dominant allele codes for a protein that produces short hair, and the recessive allele codes for a protein that produces long hair.
Explain afterpains and why do these occur more commonly in mulips than in primips? Why do breastfeeding moms have more after pains? What you tell a mom to expect in terms of how long she will have to have afterpains?
Explain the body's mechanisms for controlling blood glucose levels under normal and stress conditions.
Offer a model to explain how the F-box protein SLF and the S-RNase mediate self incompatibility. Be sure to account for the action of these proteins in compatible and incompatible interactions.
What happens when two solutes (glycerol and ethylene glycol) are competing for the same carrier? Does it affect the time that it takes for hemolysis to occur in freshwater fish's RBC? Which would be faster or slower and how would you know since th..
Should society subject pregnant women to dietary restrictions during pregnancy to protect the fetus from the effect of defective genes they carry.
Think about a grass that grows back to mid phase in fifteen days and low phase III in 30 days after grazing down to the minimum height for efficient re-growth and plant survival.
The resting potential of a neuron is approximately -60mV. Neurons maintain this electric potential by maintaining a balance of ions inside and outside the membrane. Which of the following is the most significant factor in determining this balance.
Point out similarities and differences in their scientific foundation. What is the mainly abundant cell type? Which is the slightest prevalent.
If you did a three-point test cross with genes A, B and C, and only genes A and B were linked, what recombinant frequencies would you see for the 3 pairs of genes, AB, AC, and BC
Genetic variability is beneficial for a species because it enhances its ability to adapt to changing conditions. Why then does a cell go to great lengths to assure the fidelity of DNA replication?
Why can prakaryotes quickly re infect a patient if they are not wiped out? How may this result in the evolution of drug resistant pathogens.
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