As blood moves away from the heart toward the tissues, the relative size of blood vessels ________, the blood pressure ________, and the velocity of blood flow ________
A) decreases; decreases; decreases
B) decreases; increases; increases
C) decreases; decreases; increases
D) increases; decreases; decreases
Answer: A
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DNA is cleaved by various restriction enzymes to generate DNA fragments of sizes 543 bp, 517 bp, 396 bp, and 214 bp. Which fragment will move the fastest in agarose gel electrophoresis?
A. 543 bp B. 517 bp C. 396 bp D. 214 bp E. All of the fragments will move at the same speed.
The Cohesion-Tension Theory explains the role of ________ in long-distance water transport.
A. membranes B. transpiration C. sap movement D. plasmodesmata E. surface tension
___ develop into phagocytic ___ that migrate
through tissues digesting pathogens etc.
a. Macrophages...neutrophils b. Neutrophils...macrophages c. Dendritic cells...macrophages d. Monocytes...macrophages e. Monocytes...dendritic cells
While water continually orients phospholipids into a lipid bilayer, it does not fix the lipids permanently into position. Thus, the bilayer is considered to be ________.
A. static B. charged C. fluid D. fluctuating