BIO101S_Tutorial 5_May 2020.docx - BIO101S General Biology Assessment(checked Tutorial 5 Name Matrix No Chapter 5 Prokaryotes Bacteria(A Match the

BIO101S_Tutorial 5_May 2020.docx - BIO101S General Biology...

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BIO101S General Biology Assessment: (checked) Tutorial 5 Name: Matrix No: Chapter 5: Prokaryotes: Bacteria (A) Match the following: __e__ 1. small pieces of circular DNA a. binary fission __a___ 2. chromosome replication, followed by cell division b. conjugation __c___ 3. special, dehydrated cell formed when conditions are unfavourable c. endospore __b___ 4. exchange of genetic material through cell-to-cell contact d. pili __d___ 5. hair-like structures on the surface of bacteria e. plasmid A student is observing three bacteria sample under a microscope. The magnification field is shown in the figure below. For each bacteria sample, identify its shape. (B) Characteristics of bacteria: 1. Shape: _______ Coccus ___________ _______ Spirillum _________ _______ Bacillus ___________ 2. Cell wall composition: Made up of _____ polymers of amino acids and sugar (peptidoglycan) __________ Gram positives: _________ thick walled _________________ Gram negatives: __________ thin walled ________________ 3. Oxygen requirement: ___ aerobic_ _______: Use oxygen in cellular respiration ___ anaerobic ________: Do not use oxygen (use sulfur etc.) during cellular respiration 4. Nutritional mode: ____ Phototrophs
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