Which statement is true?
a. Blood flows from areas of high hydrostatic pressure in the arterioles to low hydrostatic pressure in the arteries.
b. Blood flows from areas of low hydrostatic pressure in the arterioles to high hydrostatic pressure in the arteries.
c. Blood flows from areas of high hydrostatic pressure in the arteries to low hydrostatic pressure in the arterioles.
d. Blood flows from areas of low hydrostatic pressure in the arteries to high hydrostatic pressure in the arterioles.
c. Blood flows from areas of high hydrostatic pressure in the arteries to low hydrostatic pressure in the arterioles.
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DNA replication always proceeds by adding new bases to the _______ end of an existing strand.
A. 1' B. 2' C. 3' D. 4' E. 5'
The SA node initiates the heartbeat by automatically sending out impulses causing the atria to contract.
Answer the following statement true (T) or false (F)
Modern eukaryotes depend on mitochondria to generate most of the cell's ATP. How many molecules of ATP can a single molecule of glucose generate?
(a) 30 (b) 2 (c) 20 (d) 36
Cytochalasin is a drug that caps actin filament plus ends, thus preventing actin polymerization. Phalloidin is a drug that binds to and stabilizes actin filaments, preventing actin depolymerization
Even though these drugs have opposite effects on actin polymerization, the addition of either of these drugs instantaneously freezes the cell movements that depends on actin filaments. Explain why drugs that have opposite effects on actin filaments can have a similar effect on cell movements.