Which of the following is an example of diffusion??
A) ?Inhalation of air into the lungs
B) ?Build-up of carbon dioxide in the cells
C) ?Warming and moistening of inhaled air before it passes to the alveoli
D) ?Passage of oxygen from the alveoli to the blood
D
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A thick, sticky secretion produced by goblet cells is called ________.
A. synovial fluid B. plasma C. mucus D. serous fluid E. saliva
Considering the wavelengths of light received and abundance of various photoreceptors, which color is best received by the retina?
A) purple B) yellow C) bright red D) blue E) green
Which of the following lists the components of a nucleotide?
A. Phosphate, sucrose, amino acid B. Phosphate, lipid, nitrogenous base C. Monosaccharide, amino acid, phosphate D. Monosaccharide, nitrogenous base, sucrose E. Phosphate, monosaccharide, nitrogenous base
Three physiological factors that affect the color of skin are: volume of blood in dermal vessels, carotene in the subcutaneous layer, and various diseases.
Answer the following statement true (T) or false (F)