If two solutions have unequal concentrations of a solute, the solution with the lower concentration is called
A. osmosis.
B. isotonic.
C. hypertonic.
D. hypotonic.
Answer: D
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Over evolutionary time, photosynthesis has effectively poisoned itself by producing an oxygenic atmosphere because __________
A. rubisco is an oxygenase B. rubisco is a carboxylase C. O2 is a strong oxidant D. rubisco is an oxygenase and O2 is a strong oxidant E. rubisco is an oxygenase and O2 is a strong reductant
Quantitative traits
A. are polygenic. B. encode genes for continuous traits. C. are influenced by the environment. D. are polygenic and are influenced by the environment. E. are polygenic, encode genes for continuous traits, and are influenced by the environment.
The skeleton of vertebrates serves several important functions. Among these are
_____ support and locomotion. _____ blood formation. _____ conduction of nerve signals. _____ protection of organs and soft tissues. _____ calcium homeostasis.
The main danger from deep vein thrombosis is ____
a. a clot breaking loose and moving elsewhere in the body b. unsightly veins c. loss of blood flow in the extremities d. blood pooling below the heart e. a clot dispersing without warning