In an HIV infection the TH cells and macrophages are NOT commonly infected
Indicate whether the statement is true or false.
Answer: FALSE
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Complex organisms can be characterized as having:
A. a small genome with few genes. B. a small genome with many genes. C. a large genome with few genes. D. a large genome with many genes. E. None of the answer options; there is no correlation between the complexity of an organism and these characteristics.
Decomposers
What will be an ideal response?
A population of voles (small mammals) live in a shady forest. Originally, the voles are a light tan color, but then a dark brown coloration arises by a new mutation. The darker voles are harder for predators to see in the leaf litter, thus they are less susceptible to predation. After 10 generations the majority of voles in the population are the dark brown color. What type of selection are the population of voles going through? 
A. Negative frequency-dependent selection. B. Directional selection. C. Balancing selection. D. Stabilizing selection. E. Diversifying selection (disruptive selection).
In the logistic growth model, as the number of individuals in the population (N) approaches the carrying capacity (K), what happens to the intrinsic rate of growth (ri)?
A. It will be affected by increased competition within the species. B. It will be affected by a decreased death rate from predation. C. It will not change. D. It will be affected by an increased birth rate. E. It will be affected by increased competition with other species.