What is the function of the simple squamous cells found in the glomeruli of the kidney?
A. secrete and propel mucus
B. secrete and absorb substances
C. protect areas subject to abrasion
D. secrete hormones
E. allow exchange of substances by diffusion and osmosis
E. allow exchange of substances by diffusion and osmosis
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Which of the following statements best summarizes evolution as it is viewed today?
A) Evolution represents the result of selection for acquired characteristics. B) Evolution is the production of adaptations that meet present and anticipated needs. C) Evolution is the descent of humans from the present-day great apes. D) Evolution is the differential survival and reproduction of the most-fit phenotypes.
Bacteria ____
a. are diploid organisms b. produce gametes c. have a life cycle that varies between unicellular stage and multi-cellular stage d. have a single circular chromosome e. lack both DNA and RNA
In most deuterostomes, the mesoderm forms by:
a. duplication of the ectoderm. b. schizocoely. c. migration. d. enterocoely. e. blastocoely
Briefly discuss the complementary functional roles of insulin and glucagon What will be an ideal response?