This question is unfortunately incomplete. This question relates to the advantage derived by some parasites by maintaining a low level of infection in the host. These parasites achieve this by a gene for its surface glycoproteins that is duplicated thousands of times, with each gene coding for a slightly different glycoprotein structure. By constantly shifting between glycoproteins of different structures, the parasite can fool the host into temporarily reversing the immune response. The question includes a table showing the change in parasite blood concentration with time, with the table showing distinct waves of increases in parasite concentration followed by decreases. Using the hypothesis about changing glycoprotein structure, it makes sense that the host begins an immune response, leading to a decrease in parasite numbers, at which point the parasite changes the structure of its surface glycoproteins, thereby allowing the parasite to overcome the immune response, and the concentrations of parasites increase once again.
The athletes cells have been trained for the stress of a race, such as the stretching of muscle cells being ready to take in more oxygen.
Answer:
The only correct answer is D) dura mater ..brain protection
Explanation:
Allantois helps the embryo exchange gases and handle liquid waste, it does not do food absorption, yolk sac is not embryonic bladder, chorion does the gas exchange not amnion, peritoneum is the abdominal protection not heart.
Answer: lower reproductive potential
Explanation: Evolutionary psychologists focused on what today is sociobiological approach to sexuality shaping the pattern of human sexuality. This considers that women's parental investment in reproduction is greater than men's, because human sperm is more abundant in quantity than eggs, and the fact that women must carry their young in the womb for several months as well as nurture them for a considerable time after birth. This tends to make women more selective in their choice of mates than men and is seen as a limiting factor in regards to sexuality compared to men.
According to social learning theory however, sexuality is a learned behaviour which arise from studying our environments. The attitudes of parents and grown ups in the society tend to shape our perspectives and expectations which expressing sexuality is a part of.
Answer:
C. Sand
Explanation:
The soil permiability of soil textures are the following:
Sand 5.0
cm/hour
Sandy loam 2.5
cm/hour
Loam 1.3
cm/hour
Clay loam 0.8
cm/hour
Silty clay 0.25
cm/hour
Clay 0.05cm/hour
So the type of soil that has the greaters permeability is the option C. Sand