Germinal cells can most likely divide indefinitely due to the activity of an enzyme called ________.
A. telomerase
B. RNA transferase
C. DNA polymerase
D. caspases
Answer: A
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Which of the following does not contribute to defense of the respiratory system?
a. coughs and sneezes b. cilia-propelled mucus escalator c. alveolar macrophages d. normal microbial population of the lungs e. IgA antibodies
Steroids are neutral lipids
Indicate whether the statement is true or false
Match the function with its appropriate description.A. Movement of molecules from digestive tract into bloodB. Chewing of foodC. Muscular contractions that propel foodD. Removal of undigested wastes from bodyE. Breakdown of organic molecules with digestive enzymesElimination
Fill in the blank(s) with the appropriate word(s).
Which is false regarding the periosteum?
A. It is anchored to the bone by collagen fibers. B. It includes two layers: outer fibrous and inner cellular. C. It provides stem cells for bone growth and repair. D. It is composed of dense regular connective tissue. E. It covers the entire bone surface, with the exception of articular areas.