Structure and Function of Cells - Monroe Township School ...
Structure and Function of Cells Chapter 4 Honors and Lab Biology Anticipatory Set! Quick Write:
Why do we need to learn about cells? Burn Victim Healing time is radically reduced and scarring almost eliminated by bioartificial skin!
Prokaryotic cell Cells that do NOT contain membrane bound organelles. (unicellulat) Eukaryotic Cell Cells that DO contain membrane bound organelles.
Discovery of Cells. Cells were discovered due to microscopes in the early 17th century ROBERT HOOKE 1665 (english scientist) examined a slice of cork, he saw little boxes they reminded him of small rooms.cells! These were dead plant cells.
ANTON VAN LEEUWENHOEK 1632-1723 (dutch microscope maker) first to observe living cells Cells
Is the smallest unit of matter that can carry out all the processes of life. Organelle: parts within a cell!
Cell Theory (150 yrs. Passed after Hooke & Van Leeuwenhoek 1. All living things are composed of one or more cells
2. Cells are the basic unity of structure and function in an organism 3. Cells come from the reproduction of existing cells.
Three German Scientists early evidence for the cell theory Matthias Schleiden (1838) botanist, all plants are composed of cells Theodor Schwann (1839) zoologist, all animals are composed of cells
Rudolf Virchow (1855) physician, cells come ONLY from other cells. Cell Diversity
Not all cells are alike! They vary in A) size B) shape C) internal organization SIZE: range from .2m 0.2um (most are 10-50um) -not all are microscopic (most are) ex: giraffes nerve cells extend 6.5 ft. down its leg!! Cells are limited in size by the ratio
between their outer surface area and their volume Internal Organization Organelles: parts of a cell, have specific jobs
Tissues: groups of cells that have a similar function TISSUES!!
! Skin Cells Death of Tissue Organ Systems Organ
systems- a group of organs that work together to perform a set of related tasks. Digestive system includes: the stomach, esophagus, intestines and mouth.
CellsTissuesOrgansOrgan Systems Human Circulatory System Cell Organelles!
Cell Membrane separates cell from external environment, gives shape and flexibility to cell, selectively permeable Continue Cytoplasm: gelatin like aqueous fluid called cytosol
Cytoplasmic streaming Mostly water but also salts and organic molecules Continue Mitochondia: power house of the cell! Where cellular respiration occurs,
production of ATP, has its own DNA Cristae: inner membrane creating many folds to increase surface area Continue Ribosomes: where proteins are made, Free Floating Ribosome: make proteins for
the cell Ribosomes attached to ER: make proteins to be exported from the cell Continue Endoplasmic Reticulum: (ER) acts as a highway for molecules to move around the
cell. Smooth ER: does NOT contain ribosomes Rough ER: does contain ribosomes Continue Golgi Apparatus (bodies) processes, packages, and secretes
a) product is assembled (moves from ER to golgi, where it is put together and adjusted) b) product is packaged (in new sacs) c) product is mailed out (sent out of cell)
Continue. Cilia: short hair like projections beat together to move an organism ex: humans trachea cilia move fluids and mucus! YUM
Continue Flagella: long, whiplike projections, single or in pairs, rapid movement, ex: sperm Continue.
Nucleus: brains! Control center of cell, DNA & RNA are made here! Nuclear envolope: double membrane will pores Chromatin: fine strands of DNA & protein Nucleolus: inside nucleus where ribosomes are made Continue
Lysosome: digestive enzymes, digest food, disease causing bacteria, old organelles, ex: lysosomes eat up tissue between fingers in embryos, usually only in animal cells Continue
Cytoskeleton- helps shape & support cells Microtubules: long slender protein tubes form spindle fibers during mitosis Microfilaments: fine protein threads Animal cell only!
Centrioles: cell reproduction Centrosome: cell reproduction Animal Cell Oranelles in Plant Cells ONLY
Cell Wall: rigid covering made of cellulose, protects cell, goes OUTSIDE cell membrane Continue. Central Vacuole: huge structure which may take up 90% of the space in plant
cell Continue. Plastids a) chloroplasts : site for photosynthesis b) chromoplasts: stores red and yellow pigment
Title 48 CFR Federal Acquisition Regulations (FAR) Chapter 1 Part 45 prescribes standards for Government Property in contracts. FAR Clause 52.245 in a contract means you have to abide by regulations in FAR Part 45. Same idea, but different terminology...
Manifest. Destiny. Susan M. Pojer. Horace Greeley H. S. Chappaqua, NY. Trends in Antebellum America: 1810-1860. New intellectual and religious movements. Social reforms. Beginnings of the Industrial Revolution in America. Re-emergence of a second party system and more.
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Attributes of standards based unit of study. Combined curriculum document. Core Content for Assessment. EPAS connected to College Readiness Standards. ELA deconstructed Standards. Kentucky Core Academic Standards. Kentucky Model Curriculum Framework. Math Deconstructed Standards . NGSS Science Standards. Curriculum Standards
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