(looped around histone proteins) - thread like material (that coils to form chromosomes) - immersed in nucleoplasm - packages and winds DNA up - chromatin plays a role in mitosis - DNA replication - prevents DNA damage - controls gene expression - Chromatin’s thin threadlike structure helps it undergo mitosis where it forms into chromosomes. - packages and winds DNA up so that it has a smaller volume. A smaller volume allows the DNA to fit in the cell Chromo-somes - Usually
Premium DNA Cell nucleus Gene
Materials Student Provides: Distilled Water 2 Clean Sheets of Paper 1 Paper Towel 1 Pair of Scissors LabPaq Provides: 1 Digital Scale 1 50 mL Plastic Graduated Cylinder 1 Pair of Safety Goggles 1 Spatula 6 Test Tubes‚ 13 x 100 mm in Bubble Bag 1 Test Tube Rack‚ 6 x 13 mm 1 Dual Magnifier 1 Rubber Stopper 1 Marking Pencil 1 Test Tube
Premium Chemistry Test method Experiment
morphology was examined by observing both stained and unstained organisms. A wet mount is a preparation process where a live specimen in culture fluid is placed on a slide and the organism is free to move about. In the wet mount slides provided via LabPaq software with cheek‚ dental plaque‚ and yeast specimens were observed. The wet mount preparations were difficult to observe because of poor contrast‚ however‚ a common occurrence in the specimens were cells large in size and translucent in color
Premium Bacteria Biology
Physical and chemical ProPerties Physical and Chemical Properties Lab RepoRt assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor. Substance Name Mg Cu Zn
Premium Sodium Sodium chloride Chlorine
R E V I E W S H E E T EXERCISE 4 Print Form Anatomy of the Composite Cell 1. Define the following terms: are the metabolic machinery of the cell‚ the are highly organized tp carry out specific functions of the organelle: cell as a whole. the structural and functional unit of all living things. cell: 2. Although cells have differences that reflect their specific functions in the body‚ what functions do they have in common? All cells can maintain their own boundaries‚ metabolize
Premium
Grade 10 Science ULTIMATE Study Guide Biology – Key Concepts Cell Cycle – The life of a cell (thug lyfe). This includes growth‚ DNA replication‚ prep for mitosis and mitosis. Mitosis Interphase; first growth phase: the cell produces new proteins and organelles. Synthesis phase: the dna is replicated in preporation for mitosis. Second growth phase: the cell produces the organelles and structures needed for cell division. Prophase; Chromatic condense into chromosomes‚ which are sister
Premium
meanings. A. Diffusion‚ osmosis Diffusion is the process where molecules move from a region of high concentration to a region of low concentration. Osmosis is basically the same‚ but with water. B. cell division‚ mitosis Cell division is part of mitosis‚ when a cell splits into two. Mitosis has more steps than just cell division. C. facilitated diffusion‚ active transport Active transport is where a cell uses energy to move molecules. Facilitated diffusion is the same as diffusion‚ just when they
Premium Cell Cell membrane Bacteria
daughter cells. In cells without a nucleus‚ the cell cycle occurs via a process termed binary fission. In cells with a nucleus‚ the cell cycle can be divided in three periods: interphase—during which the cell grows‚ accumulating nutrients needed for mitosis preparing it for cell division and duplicating its DNA—and the mitotic phase‚ during which the cell splits itself into two distinct cells‚ often called "daughter cells" and the final phase‚ cytokinesis‚ where the new cell is completely divided. The
Premium Cell cycle
reaches an isotonic state (or equilibrium). At that point‚ molecules will move equally across the membrane. 10-1 Cell Growth surface-area-to-volume-ratio: the ratio of surface area to volume cell division: division of a cell (also called mitosis) Explain why larger organisms are made of many small cells rather than one large cell‚ emphasizing the concept of a large surface-area-to-volume ratio. - It is more efficient for an organism to be made of many small cells so as many nutrients
Premium Eukaryote DNA Bacteria
Results: In Allium cepa‚ the cell walls surrounding the cells were generally a rectangular shape and somewhat in columns. The cell walls were very distinct because they were dark purple. Most of the cells were in interphase. Here‚ the nucleus could clearly be seen‚ taking up about one third of the space inside the cell. Most cells in interphase had one nucleolus inside the nucleus‚ but some had multiple. The nuclei were pink because of the stain and the nucleoli were a much darker pink. The cytoplasm
Premium Cell nucleus Chromosome Light