Which organisms exist in a plasmodial form that is a diploid cytoplasmic mass?
A. sporozoa
B. zooflagellates
C. slime molds
D. diatoms
Ans: C. slime molds
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Which of the following statements regarding the phosphorus cycle is incorrect?
A. The phosphorus pool is in sedimentary rock. B. Phosphorus must be phosphatized to enter biological systems. C. Phosphorus is released naturally by mining. D. Phosphorus mineralization occurs by microbial action. E. Thiobacillus produces sulfuric acid that dissolves phosphate rock.
Name of the type of synapse that occurs between a motor neuron and a muscle fiber.
The function of which of the following structures is NOT directly related to diffusion or active transport across its membranes?
(A) Aorta (B) Small intestine (C) Nephron tubule (D) Capillary (E) Alveolus
A technique that uses comparisons of many characteristics to help determine phylogenetic relationships is
A. phylogeny. B. DNA analysis. C. cladistics. D. binomial nomenclature.