Cells that are alive, have thickened cell walls, and support the plant body are
A) parenchyma cells.
B) tracheids.
C) collenchyma cells.
D) vessel elements.
E) sclerenchyma cells.
C
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Which of the following is important to the development of dorsal structures such as the neural tube and notochord?
A. Spemann's organizer B. noggin C. cadherins D. both Spemann's organizer and noggin E. both Spemann's organizer and cadherins
The basic method of genetic analysis in humans requires a(n) ____________________ of several generations
Fill in the blank(s) with correct word
Total amount of kinetic energy DUE TO molecular motion is ____________
Fill in the blank(s) with the appropriate word(s).
Which of the following represents the correct order of adult human teeth, beginning at the front and moving right along the bottom jaw?
A. Incisors, canines, premolars, molars B. Incisors, molars, canines, premolars C. Incisors, premolars, molars, canines D. Incisors, canines, molars, premolars E. Canines, incisors, premolars, molars