Homologous organs indicate: MCQ with Answer and Explanation

Explanation:
Glycolysis, the breakdown of glucose to pyruvate, occurs in the cytoplasm of cells. The Krebs cycle and oxidative phosphorylation occur in mitochondria.

Explanation:
The pituitary gland is a pea-sized endocrine gland located at the base of the brain, in a bony cavity called sella turcica, attached to the hypothalamus by a stalk (infundibulum). It is divided into anterior and posterior pituitary, secreting hormones that regulate growth, reproduction, metabolism, and other endocrine glands. Thus, it's in the head, not neck or abdomen.

Explanation:
Enzyme activity depends on pH and temperature; they are not consumed (reusable). Optimum temperature varies; human enzymes around 37°C, but bacterial enzymes can be higher. So 2 is not universally true.