Which of the following is an incorrect statement about the regulation of populations?
A) The logistic equation reflects the effect of density-dependent factors, which can ultimately stabilize populations around the carrying capacity.
B) Density-independent factors have an increasingly greater effect as a population?s density increases.
C) High densities in a population may cause physiological changes that inhibit reproduction.
D) Because of the overlapping nature of population-regulating factors, it is often difficult to precisely determine their cause-and-effect relationships.
E) The occurrence of population cycles in some populations may be the result of crowding or lag times in the response to density-dependent factors.
Ans: B) Density-independent factors have an increasingly greater effect as a population?s density increases.
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Which of the following do airborne microorganisms and microorganisms on light-exposed surfaces use to protect themselves from photooxidation?
A. Catalase enzymes B. Superoxide dismutase C. Carotenoid pigments D. Peroxidase enzymes
The process by which the major land masses have shifted their positions, changed shapes and separated from each other, is known as
A. Cotranslational sorting. B. Continental drift. C. Depolarization of land masses. D. Differential land movement. E. Cyclic land drift.
Myosin is a motor protein that walks along intermediate filaments.
Answer the following statement true (T) or false (F)
Telomerase reads ________ as a template and synthesizes ________ as a product
A) DNA; DNA B) DNA; protein C) RNA; RNA D) RNA; DNA E) DNA; RNA