How much kidney filtrate is reabsorbed back into the vascular system?
A. 50-60%
B. 100%
C. 98-99%
D. 75-80%
Answer: C
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Apoptosis and necrosis are described as the two ways cells die. Which one is "messy"? Which is "tidy"? Explain. Why do these forms of cell death exist? What are some advantages and/or disadvantages of each? Use the lining cells of the digestive tract in an example of an advantageous process.
What will be an ideal response?
The figure illustrates the layers of the epidermis. Which layer of the epidermis is "A"?
A. Stratum lucidum B. Stratum corneum C. Stratum spinosum D. Stratum basale E. Stratum granulosum
The auditory tubes open into the
A. fauces. B. oropharynx. C. nasopharynx. D. laryngopharynx. E. nasal cavity.
The pre-embryonic structure that enters the uterus is a fluid-filled ball of cells called a
A. trophoblast. B. blastocyst. C. zygote. D. morula.