When biomedical researchers design drugs that must enter cells to be effective, they sometimes add different groups to make the drug molecules more likely to pass through plasma membranes. what kind of chemical group would you choose to add to your drug? 2. responding to their environment, plants alter the permeability of their phospholipid bilayer by incorporating different percentage of different components. cold temperatures would decrease the permeability of the plant’s membrane. how should it respond?

Which of the following scenarios is an example of the bottleneck effect? answers a in south africa, much of the afrikaner population is descended from a small number of dutch colonists. in this population, this is an unusually high frequency of pseudoxanthoma elasticum (pxe), an elastic tissue disorder. b four white-tailed deer are introduced to a park in finland. thirty years after their introduction scientists compare the genes in the population and find that there is no variation. c during the industrial revolution, london's air became filled with soot. as a result, birds started eating more of the lighter moths because they were easier to spot than their darker counterparts. over time, the moth population changed so that there were more darker moths than lighter ones. d 10% of the population of american alligators in an area have the recessive trait albinism. a massive flood results in the death of 80% of the population. of the remaining population, 60% have the recessive trait of albinism.

What type of plant is good for a bioassay and where can i buy it? i only have a month.

The frequency of alleles in a population that is in hardy weinberg equilibrium? a . changes in each successive generation b. is less important than the frequency genotypes c. shows evidence of the process of natural selection d. remains the same over several generations