One primary oocyte containing 46 doubled chromosomes yields only one ovum containing 23 unpaired chromosomes
Indicate whether the statement is true or false
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Athletes abuse erythropoeitin (EPO) because it
A. increases the red blood cell supply, which brings more oxygen to muscle cells. B. increases the white blood cell supply, which prevents infection. C. decreases the red blood cell supply, which brings more oxygen to muscle cells. D. increases the red blood cell supply, which depletes oxygen from muscle cells.
In the regulation of body temperature, which organ systems contain the receptors?
A) Cardiovascular and nervous B) Nervous and integumentary C) Skeletal and integumentary D) Muscular and nervous
How does the lymphatic system both help and hinder the spread of cancer through the body?
What will be an ideal response?
Why does a positive pregnancy test have two pink stripes?
A) One stripe tests for the hormone, and the other stripe indicates how much hormone is present. B) The second pink stripe indicates whether white blood cells are attacking the pregnancy antibodies. C) One stripe binds to the hormone, and the other stripe is a control zone. D) Each stripe binds to the same hormone to indicate a positive pregnancy.