Question

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cellular transport
read each description below. choose the letter of the correct term that matches each description.
word bank:
a exocytosis
b swell
c shrink
d osmosis
e hypotonic
f energy
g hypertonic
h passive transport
i endocytosis
j active transport
k isotonic

• the movement of materials from high to low concentration
• the movement of materials from low to high concentration
• what is needed for active transport but not for passive transport?
• the movement of water through a selectively permeable membrane
• a solution with a lower solute concentration
• a solution with a higher solute concentration
• a solution with an equal solute concentration
• the result of placing a cell in a hypertonic solution
• the result of placing a cell in a hypotonic solution
• a type of transport which moves materials into the cell
• a type of transport which moves materials out of the cell

Explanation:

• the movement of materials from high to low concentration: En este caso, se trata de transporte pasivo, ya que no requiere energía y los materiales se mueven según su gradiente de concentración. Pero en el word bank, la opción más adecuada es "passive transport" (H).
• the movement of materials from low to high concentration: Esto requiere energía y es transporte activo. En el word bank, la opción es "active transport" (J).
• What is needed for active transport but not for passive transport?: La energía (E).
• the movement of water through a selectively permeable membrane: Es osmosis (D).
• a solution with a lower solute concentration: Es hipotónica (F). Cuando una célula se coloca en una solución hipotónica, tiende a absorber agua y puede "swell" (B).
• a solution with a higher solute concentration: Es hipertónica (G). Una célula en una solución hipertónica pierde agua y "shrink" (C).
• a solution with an equal solute concentration: Es isotónica (K).
• the result of placing a cell in a hypertonic solution: La célula pierde agua y se contrae, es decir, "shrink" (C).
• the result of placing a cell in a hypotonic solution: La célula absorbe agua y se hincha, "swell" (B).
• active transport which moves materials into the cell: Endocitosis (I).
• active transport which moves materials out of the cell: Exocitosis (A).

Answer:

• the movement of materials from high to low concentration: H. passive transport
• the movement of materials from low to high concentration: J. active transport
• What is needed for active transport but not for passive transport?: E. energy
• the movement of water through a selectively permeable membrane: D. osmosis
• a solution with a lower solute concentration: F. hypotonic
• a solution with a higher solute concentration: G. hypertonic
• a solution with an equal solute concentration: K. isotonic
• the result of placing a cell in a hypertonic solution: C. shrink
• the result of placing a cell in a hypotonic solution: B. swell
• active transport which moves materials into the cell: I. endocytosis
• active transport which moves materials out of the cell: A. exocytosis