The drug cytochalasin B blocks the function of actin. Which of the following aspects of the cell cycle would be most disrupted b
y cytochalasin B? A) spindle formation
B) spindle attachment to kinetochores
C) DNA synthesis
D) cell elongation during anaphase
E) cleavage furrow formation and cytokinesis
The correct answer is: E) cleavage furrow formation and cytokinesis
Cytochalasin B (cytos-cell and chalasis-relaxation) is a molecule which inhibit network formation by actin filaments by blocking monomer addition. As a result, itshortens actin filaments. This molecule is involved in cytoplasmic division where it blocks the formation of contractile microfilaments. One of the microfilament’s function includes cytokinesis and formation of cleavage furrow so these functions are affected by cytochalasin B.
A slug would shrink and die if you were to sprinkle salt on in because it would cause water to leave the cells of the slug through the aquaporins in the cell membrane. This is because through osmosis water balances itself with the solute to reach equillibrium. When you pour salt on the slug you are making the outside a hypertonic solution that is going to draw out the water in the slug's cells.
Underneath both the soil and the ocean, Earth's outer layer is made of sand and water. Underneath both the soil and the ocean, Earth's outer layer is made of hard, solid rock.
The area of land<span> that is drained by a particular </span>river<span> and its tributaries is </span>called <span>either a </span>river<span> basin or </span>drainage<span> basin. </span>
