CRITICAL THINKING DIAGRAM WORKSHEET 18-1 CLASSIFICATION OF BACTERIA BY SHAPE AND NUMBER ANSWERS

By comparing DNA, evolutionary relationships can be determined. The slides will be labeled with the names of the bacteria and marked either thick PG layer or thin PG layer. Prokaryotes are microscopic, unicellular organisms. In fact, billions of bacteria live on and in your body. Methanogens are found in sewage treatment plants, swamps, bogs, and near volcanic vents. Prions are a newly discovered type of genetic material. Some bacteria cause disease.

You can add this document to your saved list Sign in Available only to authorized users. You are already familiar with animal cells. Suppose that two mosquitoes are classified as different species using the typological species concept. To learn more about antibiotic-resistant bacteria, visit BioLabs at biologygmh. The common cold and influenza are two examples of widespread viral diseases that are active infections. Bacteria also are important in the fields of medicine and research.

Open Ended Make an argument for baxteria against the following statement: In the mids, younger people in England began to develop symptoms of the disease. Prions are just viruses that lack a capsid.

Suppose that two mosquitoes are classified as different species using the typological species concept. Whether bacteria infect animals or plants, researchers are looking for ways to prevent diseases caused by bacteria.

critical thinking diagram worksheet 18-1 classification of bacteria by shape and number answers

Because prokaryotes are so small, nutrients and other substances the cells need can diffuse to all parts of the cell easily. The bacteriophages were allowed to infect the bacteria E.

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Binary fission is the division of a cell into two genetically identical cells. These genes somehow developed the ability to exist outside of the cell.

Conjugation is also an asexual form of reproduction, but it snape involve exchange of genetic material. All prokaryotes were previously classified into one group, the Kingdom Monera.

Answrs help prokaryotes to move toward light, higher oxygen concentration, or chemicals such as sugar or amino acids that they need to survive. Bacteria with the lipid layer have less peptidoglycan and appear a light pink after staining.

Which describes the role of an endospore in bacteria? The viral genes instruct the host cell to manufacture more viruses.

Draw a diagram of a virus and label the parts. Outbreaks of smallpox have occurred in the human population for thousands of years.

You can add this document to your study collection s Sign in Available only to authorized users. Prokaryotic cells do not have a nucleus.

critical thinking diagram worksheet 18-1 classification of bacteria by shape and number answers

A patient is suffering from a serious bacterial infection, and as the doctor you must choose from several new antibiotics to treat the infection. This type of virus is called a retrovirus and has a complex replication cycle. In return, the bacteria provide the xhape with an essential nutrient.

Chapter 18: Bacteria and Viruses

Bacetria would take about 10, cold viruses to span the period at the end of this sentence. Virus size Viruses are some of the smallest disease-causing structures that are known.

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critical thinking diagram worksheet 18-1 classification of bacteria by shape and number answers

Lysogenic cycle In some cases, the viral DNA might enter the nucleus of the host cell. Heterotrophic bacteria can also be saprotrophs; autotrophs can be photosynthetic or chemoautotrophic.

For complaints, use another form. Explain What were the limitations of your experimental design?

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In the lysogenic cycle, also illustrated in Figure Data Analysis lab STEP 1 Fold a sheet of paper in half vertically. Some cancer-causing viruses also belong to this group.

In fact, it has been said that humans owe their lives to classificafion because they help fertilize fields, recycle nutrients, protect the body, and produce foods and medicines. They test for amounts of nutrients and presence of harmful organisms such as bacteria. If the environment happens to change, some bacteria in a population might have the right combination of genes to allow them to survive and reproduce.

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CRITICAL THINKING DIAGRAM WORKSHEET 18-1 CLASSIFICATION OF BACTERIA BY SHAPE AND NUMBER ANSWERS

Differences between eubacteria and archaebacteria The cell walls of the eubacteria contain peptidoglycan, but the cell walls of archaebacteria do not. DEA Bacteria are prokaryotic cells. Centers for Disease Control http: Some archaebacteria called thermoacidophiles thur muh uh SIH duh filz live in hot, acidic environments including sulfur hot springs shown in Figure Complete a data table listing the similarities and differences between the two types of cells. In the lysogenic cycle, also illustrated in Figure Summarize how a cancer cell cycle is different than a normal cell cycle.

Some bacteria are heterotrophs, meaning they cannot synthesize their own food and must take in nutrients. Which line on the graph best indicates the growth rate of a population of bacteria exposed to an effective antibiotic? Finding a cure for HIV is of widespread interest in the world. What kind of research would you be able to do if you were going to investigate this debate further? Many are strict anaerobes, which means that they die in the presence of oxygen. Notice the relative size of bacterial cells found adjacent to a cheek cell.

Which animal is related most closely to the Sechura fox Pseudalopex sechurae? In this way, new gene combinations are created and diversity of prokaryote populations is increased. Interactive Time Line To learn more about these discoveries and others, visit biologygmh. Spherical or round prokaryotes are called cocci KAHK ki singular, coccusrod-shaped prokaryotes are called classiification buh SIH li singular, bacillusand spiral-shaped prokaryotes, or spirilli spi RIH li singular, spirilliumare called spirochetes SPI ruh keets.

Compare and contrast Domain Bacteria and Domain Archae. The capsule has several important functions, including preventing the cell from drying out and helping the cell attach to surfaces in its environment. Surrounding the capsid is a lipid envelope, which was obtained from the plasma membrane of a host cell. Most virologists spend many hours in the laboratory conducting experiments.

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Compare and contrast What are the effects of the different antibiotics for the bacteria species you tested? This results in spaces in the brain, hence diagrwm description of spongiform spongelike encephalopathy brain disease. Proteins called prions also might cause disease.

The bacteriophages were allowed to infect the bacteria E.

critical thinking diagram worksheet 18-1 classification of bacteria by shape and number answers

Normal flora Your body is covered with bacteria inside and out. Most bacteria do not cause disease, and many are beneficial. Explain survival mechanisms of bacteria, at the individual and population levels. You might wonder how something as small as a prokaryote could be important for human survival.

Which related disease would be associated with a bacterium that is Gram-negative and in paired rods? Protein is made directly from viral RNA. The virus now uses the host cell to replicate by either the lytic cycle or the lysogenic cycle.

Comparing Viruses and Bacteria — Review Worksheet 1.

Chapter 18: Bacteria and Viruses

In addition, the two groups of organisms have different lipids in their plasma membranes and different ribosomal proteins and RNA. DEA Viruses and prions are smaller and less complex than bacteria; they invade cells and can alter cellular functions. When the viral DNA enters the nucleus, it is inactive. The slides will be labeled with the names of the bacteria and marked either thick PG layer or thin PG layer. Vocabulary Key Concepts Section Today, the prokaryotes are divided into two domains—the Domain Bacteria eubacteria and the Domain Archaea archaebacteria.

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You can add this document to your study collection s Sign in Available only to authorized users. Active infections usually are immediate, meaning symptoms of the illness caused by the virus start to appear one to four days after exposure. A population of rodents on an island diagarm up a distinct species that is similar to a species found on the mainland.

Have you had pizza? Create a poster display to educate the people in your community about this issue. Complete a data table listing the similarities and differences between the two types of cells. A patient is suffering from a serious bacterial infection, and as the doctor you must choose from several new antibiotics to treat the infection. It would take about 10, cold viruses to span the period at the end of this sentence. Pili help bacterial classificxtion attach to surfaces.

critical thinking diagram worksheet 18-1 classification of bacteria by shape and number answers

Without nitrogen fixation, far more fertilizer would be needed for growing plants. Two centuries earlier, Egyptian prisoners caused the first known smallpox epidemic when they were captured by the Hittites in Syria.

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