Sign Up Now
Get instant access to over 1 million+ study documents
OR
Already registered? click here to login
By creating your account, you agree to our terms of service, privacy policy and student honor code.
Prokaryotic & Eukaryotic Cells
Cells can be divided into two categories: prokaryotic and eukaryotic cells. Prokaryotic cells are significantly smaller than eukaryotic cells. This size difference is due to the many contents inside a eukaryotic cell that prokaryotic cells do not have. To begin with, prokaryotic cells are always going to be unicellular, while eukaryotic cells can also be unicellular but are many times multicellular (Murray & Baron, 2007). Prokaryotic cells do not have any membrane-bound organelles inside them, such as the nucleus, mitochondria, or lysosome as eukaryotic cells do. The DNA of eukaryotic cells is linear and is contained within the nucleus, while DNA in prokaryotic cells is circular and is contained within the nuclear body, a non-membrane surrounded structure (Murray & Baron, 2007). The number of ribosomes inside a prokaryotic cell is a lot less than those contained in a eukaryotic cell. Prokaryotic ribosomes are about 70s while eukaryotic ribosomes are larger, at 80s (Murray & Baron, 2007).
The differences between eukaryotic and prokaryotic continue as one goes more into detail with the specific structures. A eukaryotic cell has a cytoskeleton which is made up of microfilaments and microtubules, proteins that support the cell, transport essential proteins, and allow the cell to move; prokaryotic cells do not contain this feature at all (Murray & Baron, 2007). The mobility of a prokaryotic cell is possible because of their flagellum and not the tubulin that allows eukaryotic cells to move. Although eukaryotic cells also have flagella to ease movement, prokaryotic flagellum movement is rigid and rotates,...
The reproduction processes between prokaryotic and eukaryotic cells also differ. While prokaryotic cells can also reproduce asexually, eukaryotic cells can divide both sexually and asexually. Prokaryotic cells divide through binary fission, while eukaryotic cells can divide through either mitosis or meiosis (Murray & Baron, 2007). Because of the lack of mitochondria in prokaryotic cells, the numerous metabolic pathways also vary between eukaryotic cell and prokaryotic cell (Murray & Baron, 2007).
Microbes are classified according to unique phenotypic features present in microorganisms. There are three phenotypic systems that can be used to classify microbes. The first is by the shape and size of the particular cell of the microbe (Murray & Baron, 2007). A gram stain or negative stain can be used in order to distinguish features that may not be visible by the naked eye. Through the specific morphology of the microbe, it can be phenotypically classified. This includes the size and shape of the microbe. A second system that can be used to phenotypically classify microbes is through their growth requirements (Murray & Baron, 2007). Some microbes are able to only grow in the presence of oxygen, while others will die if oxygen is present. Knowing the requirements of the microbe in question allows for easier classification. A third phenotypic classification system is classification through biochemical reactions (Murray & Baron, 2007). As some microbes grow, they emit certain enzymes that either effect the pH level of where they…
References:
Murray, Patrick R., and Ellen Jo. Baron. Manual of Clinical Microbiology. Vol. 1. Washington, D.C.: ASM, 2007. Print.
Nester, E., Anderson, D., & Roberts, C.E. (2012).Microbiology: A human perspective. (7th ed). New York, New York: McGraw-Hill Higher Education.
Eukaryotic Cell vs. Prokaryotic Cell: There are two types of cells found, that originate from a common ancestor - The prokaryotes and eukaryotes. While Prokaryotes are organisms without a cell nucleus and other membrane-bound organelles and are mostly unicellular, but some exceptions are found. In contrast Eukaryotes have their cells have complex structures by internal membranes and a cytoskeleton. The principal membrane bound structure is the nucleus. All animals, plants, fungi,
Lesson Plan Amp; Reflection I didn't know what state you are in so was unable to do state/district standards! Lesson Plan Age/Grade Range; Developmental Level(s): 7-8/2nd Grade; Below grade level Anticipated Lesson Duration: 45 Minutes Lesson Foundations Pre-assessment (including cognitive and noncognitive measures): All students are reading below grade level (5-7 months) as measured by standardized assessments and teacher observation Curricular Focus, Theme, or Subject Area: Reading: Fluency, word recognition, and comprehension State/District Standards: Learning Objectives: Students will develop
Branding in Service Markets Amp Aim And Objectives Themes for AMP Characteristics Composing Branding Concept Branding Evolution S-D Logic and Service Markets Branding Challenges in Service Markets Considerations for Effective Service Branding Categories and Themes Branding Theory Evolution S-D Logic and Service Markets Branding Challenges in Service Markets Considerations for Effective Service Branding Branding Concept Characteristics Characteristics Composing Branding Concept Sampling of Studies Reviewed Evolution of Branding Theory Evolution of Marketing Service-Brand-Relationship-Value Triangle Brand Identity, Position & Image Just as marketing increasingly influences most aspects of the consumer's lives, brands
Cell Metabolism Define metabolism, anabolism, and catabolism in full details The cell is a complex organisms in which many chemical reaction take place so as to maintain normal cellular function. Cell metabolism can be defined as the process through which cells manufacture ATP which provides energy to the cells. Cells have evolved to form highly efficient metabolic mechanisms which differ depending on the cell. Aerobic respiration is responsible for cellular energy needs
Cell Junctions - Tight Junctions and Adherens Junctions There are a number of specialized junctional complexes in epithelial cells, formed by molecules that are different from CAMs and SAMs. These comprise of tight junctions, gap junctions, adherens junctions, and desmosomes; gap junctions can in addition form stuck between cell aggregates in condensing mesenchyme. All of these are well-formed and sometimes elaborate supramolecular structures carrying out various functions, ranging from electrical and
Divide-And-Conquer Strategy In developing an integrated system, it is often considered better to divide the system into subsystems. Because of the complexity of the integrated system, often development work has become enormously difficult. At the same time, however, organizations are demanding new and integrated systems more quickly to compete in the marketplace. Seeing that the cost of an integrated system can run into millions of dollars and several years, the organizations usually