The understanding of the significance of a stimulus is ____
a. threshold
b. sensation
c. transduction
d. perception
e. action potential
ANSWER: d
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An ecosystem
(a) includes populations but not habitats. (b) is the same as a community. (c) consists of a community and the physical and chemical environment. (d) is none of the above.
Major hotspots of biodiversity, today's coral reefs have developed over only about _____ years of Earth's history
A. 10,000 B. 100,000 C. 1 million D. 40 million E. 100 million
Which of the following DOES NOT occur in Euglenozoa?
A. disk-shaped mitochondrial cristae B. kinetoplasts C. glycolysis in the peroxisomes D. cilia E. inter-locking protein strips
What are nutrients that the human body requires in large quantities?
A) micronutrients B) macronutrients C) vitamins D) minerals