Answer:
A. Mitochondria
Explanation:
Cellular respiration occurs in the mitochondria, the energy powerhouse organelles of a cell. Glucose is broken down in the cytoplasm through the process of glycolysis. Two molecules of ATP and two molecules of NADH are formed for each molecule of glucose that is broken down.
A star at the end of it's life cycle is called a white dwarf (answer D). The order of life in the answer choices given is giant, red dwarf, white dwarf and nova. The nova, while the final stage is actually the explosive death of a star. The white dwarf state is a small, hot star that is that is dense in composition and composed of mostly carbon and oxygen.
Taking all genotypes into account, either 25%, 100% or 50% will show the recessive trait. In order to express the recessive trait, the individual must have one copy of the recessive allele from each parent.
