Microbiology Module 02 Homework Assignment
Microbiology Module 02 Homework Assignment
Use the information presented in this module along with additional outside research to answer the questions:
1) Compare and contrast prokaryotic and eukaryotic.
a) Prokaryotes and eukaryotes are two types of cells that are very different but share some certain properties such as methods of reproduction, protein synthesis, an organized metabolism, response to stimuli, and plasma membranes. One significant difference is that prokaryotes are without a cell nucleus and eukaryotes are cells with a membrane bound nucleus Prokaryotic falls in two taxa characteristic of organism: domain archaea and domain bacteria; however prokaryotic itself is not a taxon. Prokaryotes does not have a membrane surrounding its genetic material (DNA) they make proteins simultaneously to read their genetic code. Eukaryotes have a membrane called a nuclear envelope surrounding their DNA, forming a nucleus. Electron microscopy has revealed that prokaryotes typically lack various types of internal structures bound with phospholipids membranes that are present in eukaryotic cells. Prokaryotes cells are not found in human and eukaryotic cells are. Prokaryotic cells reproduce and divide by binary fission and eukaryotic cells reduce and divide by mitosis and meiosis.
2) Differentiate gram-positive and gram-negative bacteria.
a) A gram positive bacteria remains colored with gram staining even after washing with alcohol or acetone, whereas gram negative bacteria does not retain the stain when washed with alcohol or acetone. A gram positive bacteria outer membrane is absent and gram negative bacteria outer membrane is present. A gram positive bacteria's peptidoglycan layer is 20-80 nm thick, whereas a gram negative bacteria's cell peptidoglycan layer is 5-10 nm thick. A gram positive bacteria's peptidoglycan layer is smooth and contains 70-80% murein. A gram negative bacteria's peptidoglycan layer is wavy and comes in contact with plasma membrane only
Use the information presented in this module along with additional outside research to answer the questions:
1) Compare and contrast prokaryotic and eukaryotic.
a) Prokaryotes and eukaryotes are two types of cells that are very different but share some certain properties such as methods of reproduction, protein synthesis, an organized metabolism, response to stimuli, and plasma membranes. One significant difference is that prokaryotes are without a cell nucleus and eukaryotes are cells with a membrane bound nucleus Prokaryotic falls in two taxa characteristic of organism: domain archaea and domain bacteria; however prokaryotic itself is not a taxon. Prokaryotes does not have a membrane surrounding its genetic material (DNA) they make proteins simultaneously to read their genetic code. Eukaryotes have a membrane called a nuclear envelope surrounding their DNA, forming a nucleus. Electron microscopy has revealed that prokaryotes typically lack various types of internal structures bound with phospholipids membranes that are present in eukaryotic cells. Prokaryotes cells are not found in human and eukaryotic cells are. Prokaryotic cells reproduce and divide by binary fission and eukaryotic cells reduce and divide by mitosis and meiosis.
2) Differentiate gram-positive and gram-negative bacteria.
a) A gram positive bacteria remains colored with gram staining even after washing with alcohol or acetone, whereas gram negative bacteria does not retain the stain when washed with alcohol or acetone. A gram positive bacteria outer membrane is absent and gram negative bacteria outer membrane is present. A gram positive bacteria's peptidoglycan layer is 20-80 nm thick, whereas a gram negative bacteria's cell peptidoglycan layer is 5-10 nm thick. A gram positive bacteria's peptidoglycan layer is smooth and contains 70-80% murein. A gram negative bacteria's peptidoglycan layer is wavy and comes in contact with plasma membrane only