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Anatomy and Physiology - Cell Physiology Flashcards

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2642866919Endocytosisthe plasma membrane "traps" some extracellular material and brings it into the cell in a vesicle0
2642875640Phagocytosislarge particles are engulfed by the plasma membrane and enter the cell in vesicles; the vesicles fuse with lysosomes, which digest the particles1
2642878980Receptor-mediated endocytosismembrane receptor molecules recognize substances to be brought into the cell2
2642894361Exocytosis3
2642907425Vesicle-mediated (endocytosis, exocytosis)move large volumes of substances at once, such as in secretion of hormones and neurotransmitters4
2642911934Catabolismbreaks large molecules into smaller ones; usually releases energy5
2642913306Anabolismbuilds large molecules from smaller ones; usually consumes energy6
2642932066EnzymesEnzymes are chemical catalysts that reduce the activation energy needed for a reaction - Enzymes regulate cell metabolism - end with "ase"7
2642953708Structure of Enzymes- Proteins of a complex shape - Substrate molecule—the lock-and-key model8
2643073488Functions of EnzymesEnzymes regulate cell functions by regulating metabolic pathways - Enzymes are specific in their actions9
2643082370allosteric effectorsaffect enzyme action by changing the shape of the enzyme molecule10
2643257827What can change a protein/ enzyme- Temperature - PH level - Ionizing radiation - Cofactors -11
2643298523Cellular respirationthe pathway by which glucose is broken down to yield its stored energy - Glycolysis - break down glucose - Citric acid cycle - KREBS cycle - Electron transport system12
2643341679GlycolysisPathway in which glucose is broken apart into two pyruvic acid molecules to yield a small amount of energy (which is transferred to adenosine triphosphate [ATP] and reduced nicotinamide adenine dinucleotide [NADH]) - Anaerobic13
2643357288Citric acid cycle14
2643426732Deoxyribonucleic acidA double-helix polymer. Functions to transfer information, encoded in genes, to direct the synthesis of proteins15
2643429582Genea segment of a DNA molecule that consists of approximately 1000 pairs of nucleotides and contains the code for synthesizing one RNA molecule, which then may be translated into one polypeptide16
2643431022Ribonucleic acidrRNA and tRNA, which are copies of a DNA gene but regulate processes rather than code for a polypeptide17
2643512710Non-codingIntrons18
2643512735Codingexons19
2643514803Spliceosomesribosome-sized structures in the nucleus that splice mRNA transcripts20
2643520190Chaperone MoleculesFound in the cytosol, endoplasmic reticulum, and Golgi apparatus help polypeptides fold and then possibly combine into larger protein molecules or hybrid molecules21
2643542307ProteomeAll the proteins synthesized by a cell make up the cell's proteome22
2643546118Cell growthdepends on using genetic information in DNA to make the structural and functional proteins needed for cell survival. a newly formed cell produces a variety of molecules and other structures necessary for growth by using the information contained in the genes of DNA molecules23
2643549903Cell reproductionensures that genetic information is passed from one generation to the next cells reproduce by splitting themselves into two smaller daughter cells24
2642875641Pinocytosisfluid and the substances dissolved in it enter the cell25
2646778092What is Interphase?The growth phase. Not a part of Mitosis26
2646782881What is the first stage of Mitosis?Prophase27
2646783762What is the second stage of Mitosis?Metaphase28
2646784176What is the third stage of Mitosis?Anaphase29
2646785108What is the fourth stage of Mitosis?Telophase30
2646789366DNA replicationReplication of the genome prepares the cell for reproduction; the mechanics are similar to RNA synthesis31
2646820900Cyclin-dependent kinasesactivating enzymes that drive the cell through the phases of its life cycle32
2646899621Cyclinsregulatory proteins that control the CDKs and "shift" them to start the next phase33

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