Biology |
Contents
Chapter | 1 |
Chapter | 8 |
Part One Cell Structures and Functions | 15 |
Copyright | |
99 other sections not shown
Common terms and phrases
adult algae amino acids amount aorta arteries arthropods bacteria blood stream blood vessels body bones brain called capillaries carbohydrates carbon dioxide cause cavity chemical chromosomes circulatory system coelenterates color contains contraction cycle digestive tract diploid disease ectoderm embryo energy enzymes evolution excretion fibers Figure fish fluid fossil function gametes gametophyte genes glands glucose grow growth hair haploid heart hemoglobin hormone human impulses increase insects intestine kidney known layer liver living lower lungs lymph mammals meiosis membrane ment metabolism molecules mouth muscle muscular nerve neurons normal nucleus occur organs ovary oxygen pair passes pharynx phylum pituitary plants and animals plasma present pressure produced proteins protoplasm protozoa red cells reproduction result root secrete seed sexual skin species sperm spores sporophyte stem stimulated stomach structure substances sugar surface tion tissue tube tubules types urine valves veins ventricle vertebrates vitamin wall xylem zygote