Which cells of the thyroid produce calcitonin?
A) oxyphil cells
B) parafollicular cells
C) chief cells
D) follicle cells
B
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The human genome consists of approximately ________ pairs of nucleotides
A) 3000 B) 3 billion C) 3 million D) 300,000
Where does the Krebs cycle take place?
a) Cytosol b) Plasma membrane c) Nucleus d) Mitochondria e) Golgi Apparatus
Lipids that can diffuse easily across plasma membranes are called
A) triglycerides. B) steroids. C) albumins. D) high-density lipoproteins. E) free fatty acids.
Answer the following statements true (T) or false (F)
1. Fluid makes up about 25% of the body weight of the average adult. 2. The percentage of body water increases slightly over the first 10 years of life. 3. No matter how dehydrated the body gets, it will continue to lose water through the lungs and skin. 4. One of the first signs of dehydration is the reduction in the production of saliva. 5. Proteins are considered negative ions.