Where is thick skin found?
A. On the lips
B. On the palms
C. On the dorsal surface of the fingers
D. On the cheeks
E. On the abdomen
Answer: B
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Lisa is on a low-cholesterol diet. She ingests almost no dietary cholesterol. When she goes into her doctor's office for a blood test, we expect her plasma cholesterol concentration to be almost zero as well.
Answer the following statement true (T) or false (F)
The formula for methane gas is CH4. What does the formula 4CH4 represent?
A) a molecule with 4 carbon atoms B) a molecule with 4 carbon atoms and 16 hydrogen atoms C) 4 molecules, each containing a carbon and a hydrogen atom D) 4 molecules, each containing a carbon atom and 4 hydrogen atoms E) an inorganic compound with ionic bonds
Which of the following is true about the movement of ions across excitable living membranes?
A) Ions always move actively across membranes through leakage channels. B) Some ions are prevented from moving down their concentration gradients by ATP-driven pumps. C) Sodium gates in the membrane can open in response to electrical potential changes. D) The bulk of the solutions inside a cell are negatively charged.
Describe the features of acids
What will be an ideal response?