Identify and describe:A
three different ways in which leaves can be arranged on stems, and list one example for each.
B. three different venation patterns in leaves and whether each is characteristic of eudicots or
monocots. What will be an ideal response?
A. 1) alternate arrangement: one leaf per node, e.g., beech
2) opposite arrangement: two leaves per node, e.g., maple
3) whorled arrangement: three or more leaves per node, e.g., catalpa
B. 1) parallel venation: primary veins run parallel to each other; monocots
2) pinnately netted: major veins branching off a midvein; eudicots
3) palmately netted: major veins radiating from one point; eudicots
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An early step in shotgun sequencing is to _____
A) break genomic DNA at random sites B) map the position of cloned DNA fragments C) randomly select DNA primers and hybridize these to random positions of chromosomes in preparation for sequencing
Using the drawing of mRNA below, choose the letter that best fits the description. This region prevents rapid degradation of the mRNA transcript and is essential for translation. ____
What will be an ideal response?
The light-sensitive pigment found in animals' eyes is called
A. carotene. B. chlorophyll. C. glutamate. D. rhodopsin. E. tyrosine.
What is a phospholipid composed of?
A.) a polar head and a nonpolar tail B.) a nonpolar head and a polar tail C.) a polar head and tail D.) a nonpolar head and tail