PPT-Prokaryotic Gene Structure

Note that the ATG codon encodes both start and methionine Prokaryotic genes have a simple onedimensional structure 5 5 5 5 Start codon Stop codon ATG TAG ATG AAA. OCR AS Biology. Unit 1: Cells, Exchange and Transport. Learning objectives. To understand and discuss the basis of cell theory based upon milestones in cell biology. To carry out practical work on cell size and magnifications using a light microscope. Prokaryotic vs. Eukaryotic Cells. Two Basic Types. Remember….cells are the basic unit of life for ALL living things.. There are two basic types of cells:. Prokaryotic cells . – found in bacteria. TSW – Recognize that the presence of a nucleus determines whether a cell is prokaryotic or eukaryotic. 6.12B. Cells. There are two . basic types . of cells. Prokaryotes. or prokaryotic cells . Eukaryotes. AJ Scielzo. Prokaryotic Flagella . Long, threadlike structures protruding from the outside surface of the cell . Main function is movement. Prokaryotic flagella are protein fibers that extend from the cell. A. Generalized Structure. 1. Cell Appendages. A) Flagella. 1) Functions in movement of the cell. 2) 3 components. Prokaryotic Cell Structure. a) Filament . i) Whip-like, helical structure. b) Hook . i) Holds the filament. Eukaryotes, Prokaryotes and Measuring Cells. Lesson Objectives. To understand the difference between eukaryotic and prokaryotic cells.. To describe the features of a prokaryotic cell such as a bacterium.. PROKARYOTES. EUKARYOTES. CYTOPLASM. Cell Membrane. DNA. Always single-celled. No Nucleus. DNA is a simple,. Single loop. Small Cells. (1 – 10 . um. ). Bacteria. . Can be single- or multicellular . TSW – Recognize that the presence of a nucleus determines whether a cell is prokaryotic or eukaryotic. 6.12B. Cells. There are two . basic types . of cells. Prokaryotes. or prokaryotic cells . Eukaryotes. Draw 8 boxes on your paper. Gene regulation accounts for some of the phenotypic differences between organisms with similar genes.. 2005-2006. Gene regulation in bacteria. Control of gene expression enables individual bacteria to adjust their metabolism to environmental change. Gene Expression. Gene Expression. Transcription. Splicing. Polyadenylation. mRNA Stability. Translation. Protein Stability. Controls on Protein Levels. Transcription Control - Prokaryotic Promoter. Transcription Control - Prokaryotic Promoter. Eukaryotic translation. Eukaryotic mRNAs are characterized by two post-transcriptional modifications: the 5-terminal 7methyl-GTP cap and the 3-terminal poly(A) tail .. The 7methyl-GTP cap is essential for mRNA binding by eukaryotic . 1 Professor Marc C Lavoiemarc.lavoie@cavehill.uwi.edu MICRO-ORGANISMS PROKARYOTES EUKARYOTES BACTERIA ARCHAEA AMOEBOZOA ARCHAEPLASTIDA CHROMALVEOLATA EXCAVATA VIRUSES RHIZARIA OPISTOKONTA What are Arc Science. Learning intention. To know and understand the difference between eukaryotic and prokaryotic cells.. You will need. •  A pen and paper.. •  A digital device. . Lesson 12: challenge answer. 4. Bacteria that divide in multiple planes and form grapelike clusters are called. streptococci.. staphylococci.. coccobacilli.. vibrios.. Bacteria that divide in multiple planes and form grapelike clusters are called.