The mutations that lead to genetic disease cause human illness commonly because:
most genetic diseases make people more likely to become sunburned.
the overproduction of extra enzymes makes you sick.
a molecule normally metabolized by an enzyme accumulates to toxic levels.
mutations in DNA cause body cells to self destruct.
mutations cause extra DNA to be made, which gets into your blood, causing illness.
a molecule normally metabolized by an enzyme accumulates to toxic levels.
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In humans, the diaphragm divides the coelom into the ________ cavity above and the ________ below
a. upper thoracic / abdominal and pelvic cavities b. cranial / upper thoracic cavity c. spinal / abdominal cavity d. abdominal / upper thoracic and pelvic cavities
The neuromast cells are part of the system to
a. process light. b. sense electrical currents in the water. c. control balance. d. detect vibrations. e. detect dissolved chemicals.
The pacemaker is which of the following nodes?
a. sinoatrial b. semilunar c. atrioventricular d. inferior vena cava e. superior vena cava
What factors are found in both tropical and temperate forests?
A) rainy and dry seasons B) seasonal changes in temperature C) enough precipitation to support large trees D) the same species of trees