What is the role of white blood cells in protecting the body from invading organisms?
a. Phagocytes release antibodies against the invaders into the bloodstream
b. T-cells release a chemical trail for identification of invaders.
c. B-cells engulf and digest the foreign particles.
d. Killer T-cells seek out and destroy all foreign particles with the same identity.
e. Skin cells are a type of white blood cell that provide a physical, protective barrier.
d
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In the absence of oxygen, pyruvate is converted to
A. acetyl CoA. B. phosphoenolpyruvate. C. lactic acid. D. citrate.
Enzymatic browning in fruits can be slowed down or inhibited by
A. refrigeration. B. coating with a cream of tartar solution. C. coating fruits with sugar or submerging in water. D. dipping fruit in ascorbic acid or sulfur solutions. E. All of these are correct.
A child with kwashiorkor has a swollen belly appearance due to:
a. not eating enough protein to synthesize proteins needed to maintain fluid balance or transport fat from the liver. b. eating too many fatty foods. c. not eating enough protein to maintain lean body mass. d. eating too much starchy gruel.
An employee consistently calls in sick the day before a holiday. His Supervisor should:
a. discuss this with other managers b. telephone the employee to verify the illness c. schedule a counseling session with him d. file a letter of concern with the employee relations department