Which of the following factors is most likely to be a density-independent regulator of population growth?
A) drought
B) disease
C) starvation
D) parasites
A
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Genome sequencing of the parasitic protist Plasmodium falciparum has been completed. One of the results is
A. Plasmodium is highly genetically similar to its host, Anopheles. B. Plasmodium is highly genetically similar to its host, Drosophila. C. Plasmodium has a chloroplast-like apicoplast that could be targeted by drugs. D. Plasmodium produces fatty acids that are similar to ones found in humans and could be targeted by drugs.
Some breeds of dogs that are specialized to retrieve objects from bodies of water have webbing between their toes. A change in what cellular response to positional information during digit formation could account for this morphological feature?
A. Signals that cause differentiation to toes are not received by cells that become webbing. B. Signals to cause apoptosis are not received by cells that become webbing. C. Cells between the future digits migrate, but do not divide once they are in the region that will become toes. D. Cells between the future digits divide, but do not migrate to the region that will become toes. E. Cells between the future digits do not divide before migrating to the region that will become toes.
The malarial stage infecting red blood cells of humans are the:
A. merozoites B. sporozoites C. saprophytes D. gametocytes E. neophytes
Atomic Number
What will be an ideal response?