Bark is mainly _____
a. periderm and cork c. periderm and phloem
b. cork and wood d. cork cambium and phloem
C
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The most selective antibacterial agents are those that interfere with bacterial cell wall synthesis. This is because
A. bacterial cell wall synthesis is easily inhibited whereas eukaryotic cell wall synthesis is more resistant to the actions of the drugs. B. eukaryotic cells inactivate the drugs before they can do any damage. C. bacterial cell walls have a unique structure not found in eukaryotic host cells. D. eukaryotic cells do not take up the drugs.
Which factor is the main driving force behind the water cycle?
a. Ocean currents b. Volcanic eruptions c. Temperature d. Sunlight e. Land formations
Which type of vessel is one cell layer in thickness?
a. artery b. arteriole c. capillary d. venule e. vein
Assuming arterial blood pressure stays constant, if an arteriole constricts do the diameter is reduced to 50% of the original value, how will blood flow be reduced?
What will be an ideal response?