Which of the following is NOT a function of the bones?
A. To contain the cells that produce blood cells
B. To help to buffer blood pH
C. To store inorganic salts
D. To serve as attachment sites for muscles
E. All of these are functions of the bones.
Answer: E
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Match the membrane protein with its function.
1. structural proteins 2. enzymes 3. receptors 4. transporters A. transfer signals from the extracellular environment to the cytoplasm of the cell B. form cell-to-cell connections C. bind to molecules to facilitate entry to or exit from the cell D. ligands bind to these proteins and are changed by the protein
Which of the following statements is true regarding the visual projection pathway? Check all that apply.
A) Light striking the medial retina of the right eye is perceived by the left visual cortex B) Light striking the lateral retina of the left eye is perceived by the ipsilateral visual cortex. C) The left optic tract consists of nerve fibers from both eyes. D) All of the above.
Which muscle is under voluntary control?
A. Detrusor muscle B. Internal urethral sphincter C. External urethral sphincter D. None of these are correct.
Most of a cell's ATP is produced within its mitochondria. What gas do mitochondria require to produce ATP, and what gas results?
A) Carbon dioxide is required to produce ATP, and oxygen is released in the process. B) Oxygen is required to produce ATP, and carbon dioxide is released in the process. C) Nitric oxide is required to produce ATP, and nitrogen is released in the process. D) Nitrogen is required to produce ATP, and nitric oxide is released in the process. E) Hydrogen is required to produce ATP, and nitric oxide is released in the process.