The fetal period is characterized by ________

A) germ layer formation
B) the formation of organ systems
C) neurulation
D) growth and preparation of fetal organ systems for their eventual functions


Answer: D

Biology & Microbiology

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Vertigo is the sensation of dizziness. Which structure is most likely involved in this sensation?

a. basilar membrane b. pinna c. semicircular canals d. stapes e. oval window

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One way to regulate gene expression is through the production of different sigma factors. These cause RNA polymerase to bind to different sets of promoters, thereby altering the pattern of gene expression.

Answer the following statement true (T) or false (F)

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In a meristematic region, the cell plate during mitosis is perpendicular to the side of the stem. In what direction will the stem grow?

A) laterally in width B) vertically in height C) at a 45-degree angle from the ground D) away from the sun

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As the resolution of a microscope system improves, the size of the smallest object that can be seen clearly ________.

A. is larger. B. is not affected. C. is smaller.

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