How many Barr bodies does a normal human female contain in each diploid cell?

A. 0
B. 2
C. 1
D. 3


Answer: C

Biology & Microbiology

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Which group of organisms are bilaterally symmetrical and posses a mantle?

a. Annelids b. Platyhelminthes c. Planarians d. Mollusca e. Porifera

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A chemical messenger that influences the behavior of other individuals is a(n) _________

Fill in the blank(s) with the appropriate words(s)

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Catabolic reactions are generally degradative and hydrolytic

Indicate whether the statement is true or false

Biology & Microbiology

In humans, the heart and lungs are found in the:

A) thoracic cavity. B) cranial cavity. C) spinal cavity. D) abdominopelvic cavity.

Biology & Microbiology