Bacteria and parasitic protists can cause infections in the human digestive system. To treat such infections, the organisms causing the infections must be identified. Which cellular structures would separate a bacterial cell from a parasitic protist? A
a cell wall and no nucleus

B
ribosomes and a cell membrane

C
free-floating proteins and cytoplasm

D
a round shape and free-floating proteins

Which pattern most likely came from a gunshot and which one was produced from a blow on the head? explain your answer?

Patricia is told by her physician that her body and brain chemistry have physically adapted to the drug and that she has become dependent on the tranquilizers prescribed for her by another doctor.

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.