Question

1. when a runner sprints, their muscles require a large amount of cellular energy. based on this information, which organelle would be more abundant in a muscle cell than a skin cell? a. chloroplast b. ribosome c. mitochondrion d. nucleus 3. plant cells contain structures that carry out specialized energy - transfer functions that animal cells do not carry out. which of the following structures carries out this specialized function in plant cells? a. lysosome b. chloroplasts c. mitochondria d. central vacuole

Explanation:

For question 2, mitochondria are the power - houses of the cell, producing ATP (cellular energy). Muscle cells need more energy during sprinting, so mitochondria are more abundant in them compared to skin cells. Chloroplasts are in plant cells, ribosomes make proteins, and the nucleus contains genetic material.
For question 3, chloroplasts in plant cells carry out photosynthesis, a specialized energy - transfer function (converting light energy to chemical energy) that animal cells lack. Lysosomes are for digestion, mitochondria are for cellular respiration in both plant and animal cells, and the central vacuole is mainly for storage and maintaining cell turgor.

Answer:

1. C. Mitochondrion
2. b. Chloroplasts