Question

what process occurs within the mitochondria?
a. cellular respiration
b. lipid processing
c. dna replication
d. protein synthesis

which organelle is referred to as the \control center\ of the cell?
a. nucleus
b. endoplasmic reticulum
c. mitochondria
d. ribosomes

Explanation:

For the first question: Mitochondria are the power - houses of the cell. Cellular respiration, which is the process of converting glucose and oxygen into ATP (energy), occurs in mitochondria. Lipid processing mainly occurs in the smooth endoplasmic reticulum. DNA replication occurs in the nucleus (in eukaryotes). Protein synthesis occurs in ribosomes (with mRNA from the nucleus).
For the second question: The nucleus contains the cell's genetic material (DNA). It controls all the activities of the cell by regulating gene expression. The endoplasmic reticulum is involved in protein and lipid synthesis. Mitochondria are for energy production. Ribosomes are for protein synthesis.

Answer:

a. Cellular respiration
a. Nucleus