When is the thymus gland most active?
A. From ages 45?65 years
B. From age 65 years until death
C. From ages 25?45 years
D. From puberty to adulthood
E. From childhood to puberty
Answer: E
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Extracellular matrix is ________.
A) composed of strands of actin protein B) the most abundant extracellular material C) a type of impermeable cell junction found in epithelia D) not present in connective tissue
What is the primary function of the vitreous body?
A. It refracts light. B. It maintains the round shape of the eyeball. C. It provides attachment and support for the lens. D. It absorbs scattered light rays. E. It provides nourishment for the retina.
Identify the most common lethal inherited disease affecting Caucasians of Northern European descent that results from a defective gene located on chromosome 7.
A) asthma B) emphysema C) pneumothorax D) pneumonia E) cystic fibrosis
Which of the following statements about glycogen is NOT true?
a. Glycogen is stored in glia. b. Glycogen is an energy source in short term as opposed to long term periods of strenuous activity. c. Glycogen is a major energy source for migrating salmon. d. Glycogen is stored in the fat-body of insects. e. Aerobic metabolism of glycogen can yield at least 30 molecules of ATP.