ndow Help \", G animals play, × alkaser https://uk.instructure.com/courses/19258
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ndow Help ", G animals play, × alkaser https://uk.instructure.com/courses/1925845/quizzes/3400529/take Which of the following statementsAx D Question 10 1 pts Which of the following is NOT a role that animals play in ecosystems? Link to the google doc discussion board: https://docs.google.com/document/d/1gFcXzKpiTuww glbyaL98-XJsycsOVp36hnxUCHqTw/edit?usp sharing ME220 O producers O primary consumer tied folder secondary consumer tertiary consumer retake E 425-2015- HILAL Quiz saved at 7:44am Submit Quiz Fs F7Explanation / Answer
1. The archaeal cell membrane is an unique structure and is different from bacteria and eukarya in its lipid composition. Some archaea have lipid monolayerinstead of bilayer that enable them to live in extreme conditions. The smaller subunit of arachaeal ribosomes is similar to eukarya than to bacteria. Therefore, option 6 is correct.
2. Staphylococcus aureus is a grampositive bacterium that inhabits skin and body surfaces of humans. It may cause some skin infections, Its cell wall is composed of rich amounts of peptidoglycan. The skin infections caused by Staphylococcus are treated by penicillin as it is an effective antibiotic against Gram positive bacteria. Option 3 is correct.
3. Bacteria are prokaryotes with different shapes. They are smaller than eukaryotic cells and do not contain a true nucleus. Bacteria are categorized into gram positive and gram negative bacteria basing on amounts of peptidoglycan in the cell wall. Gram negative bacteria contain less peptidoglycan in their cellwall. Since, the evolution of Earth, photosynthetic organisms evolved were bacteria and were evolved around 3.4 billion years ago. Option 3 is correct.
4. Mitosis is type of cell division. Organisms carrying out asexual reproduction undergo mitosis. Mitosis is observed in bacteria, archaea and protists. During mitosis, the parent cells divide into two daughter cells. Option 3 is correct.
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