Skin covering the __________ has sweat glands but no sebaceous glands.

A. chondrocyte:Chondrocytes are specialized cells found in cartilage tissue. They produce and maintain the cartilaginous extracellular matrix and are not present in areolar connective tissue.

B. mast cell:Mast cells are abundant in areolar connective tissue and play a key role in inflammation by releasing histamine and other chemical mediators during immune responses.

C. macrophage:Macrophages are present in areolar connective tissue, where they function in phagocytosis to remove pathogens, debris, and damaged cells.

D. fibroblast:Fibroblasts are the most common cells in areolar connective tissue. They produce fibers such as collagen and elastin, as well as the extracellular matrix that provides structural support.

A. gluconeogenesis, citric acid cycle, lipolysis:Gluconeogenesis is the synthesis of glucose from non-carbohydrate sources, and lipolysis is the breakdown of fats. Neither represents the complete oxidation of glucose for energy production.

B. glycogenesis, lipogenesis, oxidative phosphorylation of the electron transport chain:Glycogenesis and lipogenesis involve the storage of glucose and fat, respectively, rather than its breakdown for ATP production.

C. glycolysis, citric acid cycle, oxidative phosphorylation of the electron transport chain:Glycolysis breaks glucose into pyruvate in the cytoplasm. The citric acid cycle oxidizes acetyl CoA derived from pyruvate, producing NADH and FADH₂. These coenzymes then donate electrons in the electron transport chain for oxidative phosphorylation, generating ATP, completing glucose oxidation.

D. lipolysis, glycogenolysis, beta oxidation:These processes involve the breakdown of fats and glycogen, not the full oxidation of glucose, so they do not represent the standard cellular respiration pathway.