Question 34

Mitochondrion and chloroplast are responsible for producing cell energy.

Both mitochondria and chloroplasts play crucial roles in energy production within cells. Mitochondria are known as the powerhouses of the cell, generating ATP through cellular respiration, while chloroplasts are involved in photosynthesis, converting sunlight into chemical energy.

A) Mitochondrion and chloroplast

This option is correct because mitochondria are responsible for aerobic respiration, generating ATP through the breakdown of glucose. Chloroplasts, found in plants and some algae, capture sunlight to produce energy-rich molecules like glucose through photosynthesis, thus contributing to energy production in cells.

B) Mitochondrion and nucleus

This option is incorrect. While mitochondria are indeed involved in energy production, the nucleus is primarily responsible for storing genetic information and regulating gene expression, rather than producing energy.

C) Chloroplast and nucleus

This option is also incorrect. Chloroplasts do contribute to energy production through photosynthesis, but the nucleus does not play a direct role in energy generation; it is involved in regulating cellular activities and genetic information.

D) Chloroplast and lysosome

This option is incorrect as well. Although chloroplasts are involved in energy production via photosynthesis, lysosomes are organelles that contain digestive enzymes to break down waste materials and cellular debris, not energy production.

Conclusion

In summary, the correct answer is A) Mitochondrion and chloroplast because both organelles are directly involved in the processes that generate energy for the cell. The other options incorrectly associate energy production with organelles that do not fulfill that role, such as the nucleus and lysosome.