First Exam Material Sequence of scientific method observation hypothesis experiment conclusion Electron subatomic particle that plays the most important role in the formation of chemical bonds Why life in the everywhere in the Universe is likely to be based on water and carbon water has unique properties that no other liquid has high heat capacity high cohesion universal solvent Consequence on atoms always seeking a stable state atoms bond together Difference between a monosaccharide and a polysaccharide one has a single sugar building block and the other has 3 or more sugar building blocks Example of lowering activation energy lowering the energy required to start a chemical reaction How does an hypothesis differ from a theory a theory is a system of related observations and tested hypotheses that have predictive and or explanatory power while an hypothesis is merely tentative answer to a question DNA and RNA are polymers of nucleotides The difference between one amino acid and another lies in the type of side group that it may have A phospholipid differs from a triglyceride phospholipids have a hydrophobic end and a hydrophilic end while triglycerides are non polar Fluid Mosaic Model is a model that explains the form and function of the biological membrane Organelles that have a double membrane Nucleus mitochondrion and chloroplast Science is based on evidence A phospholipid has two fatty acid molecules attached to it Role of cytoskeleton give shape to cells Which organelle or structure does a plant cell have that an animal cell does not chloroplast Building blocks of nucleic acids nucleotides Oxygen has eight electrons capable of forming two covalent bonds In an attempt to visualize the Fluid Mosaic Model of a plasma membrane we could say the protein is floating in a sea of lipid Roles or functions of protein enzymes transport cell recognition structure Cell smallest unit at which life is possible Cells without ribosomes are unable to synthesize proteins Monomer glucose Cholesterol required in the membrane of cells Facilitated diffusion across a biological membrane requires transport proteins and moves a substance down a concentration gradient
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