During a lab practical, a student examines a tissue that is composed of a densely packed epithelium composed of square-shaped cells in a single layer. The epithelia are often cut into circles, and sometimes into parallel rows. What organ is the student most likely observing?
What will be an ideal response?
: Simple cuboidal epithelia line the ducts of glands and also comprise most of the kidney. Depending on the other features of the slide, it is most likely a sweat gland or the kidney.
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The most common athletic knee injury produces damage to the
A) patella. B) lateral meniscus. C) ligaments. D) tendons. E) medial meniscus.
Biological half-life is the time required for
A. half of an ionic compound to ionize.?B. half of a radioactive material to be eliminated from the body.?C. radioactivity levels of organic compounds to stabilize at one-half their original value. ?D. radiation exposure that is lethal for half of a biological population.
Why is it necessary for the stomach contents to be so acidic? How does the stomach protect itself from digestion?
What will be an ideal response?
Arrange the following terms from the smallest to the largest: (1) cell, (2) organelle, (3) atom, (4) organ, (5) tissue.
A. 3, 1, 5, 4, 2 B. 1, 2, 3, 4, 5 C. 5, 4, 3, 2, 1 D. 3, 2, 1, 5, 4