What about cholesterine?

C3 carbon fixation - C4 photosynthesis - Calvin cycle - CAM photosynthesis - CAM plants - cancer - capacitation - capillary - carbohydrate - carbon cycle - carbon fixation - carnivore - Carolus Linnaeus - carotene - carrier - carrying capacity - cartilage - Casparian strip - catabolism - cell - cell biology - cell division - cell growth - cell nucleus - cell metabolism - cell wall - cellular differentiation - cellular respiration - cellulose - centriole - centromere - centrosome - chaperone protein - Charles Robert Darwin - chemiosmosis - chemautotrophic - chiasma - chimera (genetics) - Chi square test - chlorophyll - chloroplast - chloroplast membrane - cholesterine - chromatid - chromatin - chromatography - chromosome - chromosome walking - cilium - circadian rhythm - circulatory system - cis face - cisterna - citric acid cycle - cladistics - classical genetics - clearance - clogging - cloning - codon - codon usage bias - coenzyme - colchicine - collagen - colony - commensalism - common descent - communicable disease - community - community ecology - competition - competitive exclusion principle - competitive inhibition - computational biology - concentration gradient - continental drift - convergance - convergent evolution - cooperativity - cooperativity cellular respiration - cork cambium - cotransport metabolism - cotyledon - Craig Venter - cristae - crossing over - cryptobiology - cryptobiosis - CT - C-terminus - culture - cuticula - cyclic electron flow - cytokinesis - cytoplasm - cytoskeleton - cytosol - cytotoxic T cell