Biology 2

What is the basic unit of structure and function in living things?
Click the card to flip 👆
1 / 37
Terms in this set (37)
Define DNA and RNADNA is a double-stranded molecule that has a long chain of nucleotides. RNA is a single-stranded molecule which has a shorter chain of nucleotides.Define selectively permeableOnly allows specific materials to pass over the membraneWhat is diffusion?Movement of molecules from high to low concentrationWhat is osmosis?Diffusion of water through a selectively permeable membraneHow are diffusion and osmosis similar? How are they different?What is active transport?movement of molecules into or out of a cell against a concentration gradientDefine photosynthesisthe process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.What is the chemical equation for photosynthesis?6CO2 + 6H2O ------> C6H12O6 + 6O2What are the substrates for photosynthesis?carbon dioxide and waterHow do the substrates for photosynthesis get into the plant?Where does photosynthesis take place?ChloroplastWhat is the difference between an autotroph and a heterotroph?What are the two steps in photosynthesis?light reactions and calvin cycleWhat is the product of photosynthesis?glucose and oxygenWhat happens to these products of photosynthesis after they are made?What is cellular respiration?process that releases energy from food in the presence of oxygenHow does cellular respiration differ from photosynthesis?What are the two steps of cellular respiration?glycolysis and aerobic respirationHow do photosynthesis and cellular respiration work together to maintain oxygen and carbon dioxide in our environments?How do things (plants and animals) grow?The cells divide to form new cells that are different from the original cells.Define cell cycleseries of events that cells go through as they grow and divideDescribe the three stage of the cell cycle. What is each stage called, what happens during each stage?he cell cycle consists of interphase and the mitotic phase. During interphase, the cell grows and the nuclear DNA is duplicated. Interphase is followed by the mitotic phase.What is mitosis?division of the nucleusWhat are the steps of mitosis?interphase, prophase, metaphase, anaphase, telophase, cytokinesisWhat is the structure of DNA?double helix (twisted ladder)How does its structure allow DNA to be replicated?it has to do with the ladder and so a and t go together and g and c go togetherWhat is DNA made up of?nucleic acids or genes