A dust particle floating on a water surface illustrates
A) surface tension.
B) chemical tension.
C) static electricity.
D) heat capacity.
E) hydrophilic attraction.
A
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What are the primary actions performed by the upper and lower limbs, and how do they differ from one another?
What will be an ideal response?
When comparing the dermis with the subcutaneous tissue, the dermis
A. contains melanocytes; the subcutaneous layer does not. B. and the subcutaneous layer do not contain collagen. C. has more adipocytes than the subcutaneous layer. D. is divided into two layers; the subcutaneous layer is not. E. is a more vascular tissue than the subcutaneous layer.
The enzyme that breaks down complex carbohydrates is
A) lactase. B) rennin. C) amylase. D) carbonic anhydrase. E) lysozyme.
A possible explanation for the effect of caffeine is that it blocks the receptor for a neuromodulator in the brain called ________, which inhibits ACh release by cholinergic neurons
A) serotonin B) dopamine C) melatonin D) glycine E) adenosine