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Which of the following are features of Flagella?
| A. |
Found on the cell surface |
|
| B. |
Necessary for movement |
|
| C. |
Found only on bacteria |
|
| D. |
A & B |
|
| E. |
C & D |
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- Which of the following structures would aid a cell in allowing more nutrients to be absorbed by the cell? A.flagella B.microvilli c.stereocilia d.primary ciliawas used by Joseph Lister to clean wounds and surgical instruments: A.Antibiotics b.Chlorine water Carbonic acid dAntitoxins e. Carbolic acid Which one of the following does not apply to the bacterial glycocalyx? It is not responsible for virulency b .It allows the organism to resist drying C. It may allow an organism to resist phagocytosis d.It is composed of carbohydrates E. It is enclosed by the cell wallWhich of the following statement about the bacterial cell wall is INCORRECT? a. The cell wall is relatively nonpermeable and restricts the passage of sugars and amino acids. b. Gram-positive cells have more peptidoglycan in theircell walls than Gram-negative cells. c. Gram-negative cells have a membrane both inside andoutside their cell walls. d. The cell wall establishes a bacterium’s shape as a coccus,bacillus, or spirillum.
- Which of the following is NOT true about bacterial endospores? A. They are produced by bacteria of the genus Bacillus and Clostridium B. They are “resting cells” for survival during adverse environmental conditions C. Resistant to desiccation (drying), heat, and chemicals D. Formed by walling off one end of the bacterial cell and surrounding it with a thick spore coat E. They represent a type of reproduction because their formation results in an increase in the number of bacterial cellsWhich of the following is NOT a true statement about bacterial structure and function? A. Bacteria can have membrane-enclosed organelles such as mitochondria or chloroplasts B. Bacteria have a single circular chromosome made of double-stranded DNA C. Bacterial cell walls are made of a substance called peptidoglycan D. Bacterial flagella rotate to propel the cell E. Some bacteria have a capsule surrounding the cell, made of a sticky polysaccharide or proteinUnder the microscope, you see a rod-shaped cell that is swimmingrapidly forward.a. What do you automatically know about that bacterium’sstructure?b. Propose another function of flagella besides locomotion.
- 1. What is the purpose of a cell wall in bacteria? A. Structure B. Protection C. Peptidoglycan production D. a&b 2. Which of the following are features of Flagella? A. Found on the cell surface B. Necessary for movement C. Found only on bacteria D. A & B E. C & D 3. Choose an answer that best describes tthe difference between a plant vs. animal cell A. Only animals have cell walls B. Lysosomes are only found in plant cells C. Plant cells have chloroplasts and mitochondria, animal cells have only mitochondria, and both organelles generate energy in the form of ATP via electron transport. D. Peroxisomes are only found in animal cells 4. Which of the folllowing organelles/complexes makes proteins? A. The Nucleus B. Cytoplasm C. Peroxisomes D. Ribosome E. Golgi ApparatusChlamydomonas reinhardtii is a good model organism for studying cilia and flagella because: A. It is small and easy to maintain in a lab. B. The flagella can change how they beat, symmetrically and asymmetrically. C. C. reinhardtii Flagellar proteins show high similarity and identity to human flagellar proteins. D. All of the above.The surface-to-volume ratio _______. a. does not apply to prokaryotic cells. b. constrains cell size. c. is part of the cell body
- Match the microorganism to the best description of its cell wall component. A. Lacks cell wall , B.Made of cellulose photosynthetic , C.Composed of peptidoglycar , D.Protein coat with additional membranes. , E.Composed of chitin Algae Virus Fungi Protozoa BacteriaWhich of the following is not found in all bacterial cells?a. cell membrane c. ribosomesb. a nucleoid d. actin cytoskeletonCilia and flagella differ from each other primarily in: a. function b. length c. internal structure d. internal chemistry