Briefly describe the ventral body cavities and the major organs they contain.
What will be an ideal response?
Ventral body cavity is located towards the belly side of the body and is subdivided by the diaphragm into the thoracic and abdominopelvic cavity. The thoracic cavity is further divided into two lateral pleural cavities containing the right and left lungs and a medial pericardial cavity containing the heart. The abdominopelvic cavity consists of an upper abdominal cavity (containing stomach, small intestine, liver, etc.) that is continuous with a lower pelvic cavity (containing the urinary bladder, etc.).
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The ozone layer is valuable because it blocks
a. heat. b. UV radiation. c. radio waves. d. asteroids. e. X-rays.
Which is the best reason for adenine base-pairing with thymine in DNA?
A. The two molecules covalently bond together. B. Both are large bases and, therefore, bond tightly. C. Both are small bases and, therefore, bond tightly. D. These two bases fit together like jigsaw puzzle pieces.
Multiple sclerosis is a nervous system disorder that arises when white blood cells mistakenly attack and destroy:
a. neurons b. ganglia c. myelin d. neuroglial cells e. nerves
Which of the following is an informational macromolecule?
A) DNA B) ATP C) starch D) glycogen E) polypeptide