List the functions of the urinary system.

What will be an ideal response?


1. excretion of metabolic wastes
2. maintenance of water-salt balance
3. maintenance of acid-base balance
4. secretion of hormones
5. reabsorption of filtered nutrients
6. synthesis of vitamin D

Biology & Microbiology

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Which one of the following most accurately describes the ratio of oxygen to carbon to hydrogen in a simple sugar such as glucose?

A. 1 : 2 : 1 B. 1 : 1 : 2 C. 2 : 1 : 1 D. 1 : 2 : 3 E. 1 : 3 : 2

Biology & Microbiology

In desertification ________

a. lands are deserted because chemical contamination makes them unsafe for human habitation b. marginal agricultural lands are deserted to permit the re-establishment of native communities c. large regions of land capable of supporting agriculture are degraded to a desert-like condition d. marginal desert-like tracts of land are rehabilitated and put back into agricultural production

Biology & Microbiology

Which of the following designates a normal human female?

a. XXY b. XY c. XX d. XYY e. XO

Biology & Microbiology

Refer to Figure 51-3. The amnion is identified by number:a

1. b. 2. c. 3. d. 4. e. 5.

Biology & Microbiology