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

A. cytoplasm; 2:The cytoplasm is where glycolysis occurs, producing 2 ATP molecules per glucose. The citric acid cycle does not take place in the cytoplasm.

B. cytoplasm; 30:The citric acid cycle does not occur in the cytoplasm, and it does not directly produce 30 ATP; this higher yield comes from combined cellular respiration including the electron transport chain.

C. mitochondria; 2:The citric acid cycle occurs in the mitochondrial matrix. Each turn of the cycle produces 1 ATP (or GTP) per acetyl-CoA; since one glucose yields 2 acetyl-CoA, a total of 2 ATP are produced directly by the citric acid cycle.

D. mitochondria; 28:While the citric acid cycle generates high-energy electron carriers (NADH and FADH₂) that lead to ATP production in the electron transport chain, the cycle itself directly produces only 2 ATP per glucose molecule.

A. squamous epithelial cell:Squamous epithelial cells form flat layers of tissue that provide a protective barrier. They are not involved in antigen presentation or immune surveillance like dendritic cells.

B. muscle cell:Muscle cells are specialized for contraction and movement. They do not participate in immune responses or capture antigens, so they are not related to dendritic cell function.

C. melanocyte:Melanocytes produce melanin to protect the skin from UV damage. While both are found in the epidermis, dendritic cells function in immune defense rather than pigmentation.

D. nerve cell:Nerve cells transmit electrical signals to communicate sensory or motor information. They do not process antigens or trigger immune responses, unlike dendritic cells.

E. macrophage:Dendritic cells are specialized antigen-presenting cells closely related to macrophages. They capture, process, and present antigens to T cells, initiating adaptive immune responses in the skin and other tissues.