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55 Cards in this Set
- Front
- Back
Organization of species |
Kingdom, phylum, class, order, family, genus, species
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Scientific process
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Hypothesis, experiment, conclusion
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Hydrogen bonding
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strong cohesive and adhesive properties
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Cohesion
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ability of molecule to stay bonded or attracted to another molecule of same substance
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Adhesion
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ability of water to bond or attract other molecules or substances
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Lattice
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frozen water, causes molecules to spread
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Carbohydrates
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Long chains (polymers) of sugars. Functions= storage, structure and energy
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Lipids
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3 types: Fatty acids, phospholipids, and steroid
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Fatty acids
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Lipid. Either saturated fat or unsaturated fat
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Saturated fat
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Lipid(fatty acid) that has no double bonds, is solid at room temp, and causes health problems
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Unsaturated fat
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Lipid(fatty acid) that has one or more double bonds, liquid at room temp, and is healthier.
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Phospholipids
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Lipid that is two fatty acids bonded to a phosphate group. Important to combine to create a barrier in cell membrane
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Steroid
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Lipid that is a component of membranes and a precursor to hormones
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Proteins
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Contribute most to cell function. Largest molecule.
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Amino acid
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Protein. Polymers of 20 molecules.
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Enzyme
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Protein that catalyzes different reactions
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Nucleic acids
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DNA and RNA
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DNA
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code necessary for replication
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RNA
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used in transfer and messenger
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Metabolism
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all chemical reactions that occur in an organism
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Metabolic pathways
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reactions take place in a series of steps progressing from high energy to low
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Prokaryote
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Simple cell has no defined nucleus
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Eukaryote
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Complex cell. Has nucleus enclosed in membrane
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Nucleus
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Contains DNA (chromosomes)
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Chromosomes
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Contain material for regeneration of cell and instructions for function
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Ribosomes
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Reads RNA and translates genetic instructions to produce proteins
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Endoplasmic reticulum
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contains bound ribosomes
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Cytoplasm
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Has free ribosomes
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Rough ER
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Covered in ribosomes and is responsible for protein synthesis and membrane production
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Smooth ER
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No ribosomes, functions in detox and metabolism of multiple molecules
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Golgi apparatus
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Packaging, processing, and shipping organelle. Transports materials from ER throughout cell
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Lysosomes
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Intracellular digestion takes place. Hydrolyzes proteins, fats, sugars, and nucleic acids
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Vacuoles
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Usually during phagocytosis it uptakes food through a cell membrane. In plants it functions in storage, waste disposal, protection, and hydrolysis.
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Mitochondria
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Produce energy in eukaryotes and is a site of respiration
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Chloroplasts
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Found in plants to produce energy through photosynthesis
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Cellular membrane
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Protects, communication, and passage of substance in and out of the cell. Phospholipid bi layer creates hydrophobic and selectively permeable membrane
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Cellular respiration
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Produces more energy than fermentation. (32-36 ATP)
1st: Glycolysis 2nd:Krebs cycle 3rd: Electron transport chain |
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Glycolysis
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First step of cellular respiration. Converts glucose to pyruvate. Produces 2 ATP
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Krebs cycle
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Second step of cellular respiration. Pyruvate is transported into a mitochondrion. Produces 2 ATP.
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Electron transport chain
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Third step of cellular respiration. Oxidizes NADH molecules to produce oxygen and water. Produces 28-32 ATP.
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Photosynthesis
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Reverse reaction of cellular respiration. Light energy is used to produce glucose.
1st: Light reaction 2nd: Calvin cycle |
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Light reaction
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First step of photosynthesis. Converts solar energy to chemical energy to create NADPH and produce ATP.
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Calvin cycle
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Second step of photosynthesis. Uses ATP from light reaction to produce sugar (from carbon dioxide)
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binary fission
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Asexual reproduction. chromosome binds to plasma membrane and replicates. It grows, pinches in 2, and creates 2 identical cells.
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Mitosis
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Asexual reproduction. has 5 stages before cell pinches in two forming 2 seperate, identical cells.
1- Prophase 2- Prometaphase 3- Metaphase 4- anaphase 5- telophase |
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Sexual reproduction
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2 cells contribute genetic material to the daughter cells, resulting in greater variation.
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Meiosis
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Sexual reproduction.
1- prophase I 2- metaphase I 3- anaphase I 4- telophase I 5- cytokinesis |
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Alleles
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at least 2 alternatives to every gene.
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Homozygous
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same.
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heterozygous
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different
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Genetic expression
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Methods: Punnet square, multiple alleles, pleiotropy, epistasis, and polygenic inheritance
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DNA
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double helix contains 4 nitrogenous bases: adenine, thymine, guanine, and cytosine
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Adenine
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= thymine (or uracil in mRNA)
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guanine
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= cytosine
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transcription
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process which an RNA strand, complementary to original DNA strand is produced
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