Question

organelle structure and function
use the model to answer the questions about the cell, its structures,
and its functions
a student is shown an unlabeled, simplified model of a cell and its
subcellular structures. the student is asked to refine the model to
show a cell that can meet high energy demands. which refinement
best addresses this task?
a the student should increase the amount of
structure 10 to increase the size of the cell.
b the student should decrease the size of
structure 1 to decrease the genetic material in
the cell.
c the student should increase the amount of
structure 4, because it is responsible for
manufacturing the proteins.
d the student should increase the number of
structure 3, because it is responsible for
generating the atp in the cell.

Explanation:

• Structure 3 is the mitochondrion. Mitochondria are the power - houses of the cell as they generate ATP (adenosine triphosphate) through cellular respiration. ATP is the energy currency of the cell.
• If a cell has high energy demands, increasing the number of mitochondria (structure 3) will allow for more ATP production.
• Structure 10 is likely the cell membrane. Increasing its amount (size of the cell) does not directly address energy production.
• Structure 1 is likely the nucleus. Decreasing its size (and thus genetic material) is not related to energy production.
• Structure 4 is likely the endoplasmic reticulum (if it is the rough ER, it is involved in protein synthesis; if smooth ER, in lipid synthesis). Protein synthesis is not directly related to meeting high energy demands.

Answer:

D. The student should increase the number of structure 3, because it is responsible for generating the ATP in the cell.