Members of the mycoplasma genus of bacteria do not have a cell wall for protection, existing with only a simple cell membrane made up of fatty acids and phospholipids. They cannot however, synthesize their own fatty acid
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Members of the mycoplasma genus of bacteria do not have a cell wall for protection, existing with only a simple cell membrane made up of fatty acids and phospholipids. They cannot however, synthesize their own fatty acids. How is this possible?
A. They use host materials
B. They use peptidoglycan from other bacteria
C. They use anabolism as a way to create their outer membrane
D. They use amino acids to build their membranes
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- According to the endosymbiotic theory, why was it adaptive for the larger (host) cell to keep the engulfed cell alive, rather than digesting it as food? A. The host cell would have been poisoned if it had digested the engulfed cell. B. The host cell was able to survive anaerobic conditions with the engulfed cell alive. C. The engulfed cell provided the host cell with CO2 D. The engulfed cell provided the host cell with ATP. E. The engulfed cell allowed the host cell to metabolize glucose.Why can bacterial ribosomes be targeted by antibiotics?a) Because they are different from eukaryotic ribosomesb) Because eukaryotes don't have ribosomesc) Because they are identical to eukaryotic ribosomes explain answerBacteria lack independent internal membrane systems, but are able to perform photosynthesis and respiration, both of which use membranes. They are able to perform these functions because a. they actually have internal membranes, but only for these functions. b. invaginations of the plasma membrane can provide an internal membrane surface. c. they take place outside of the cell between the membrane and the cell wall. d. they use protein-based structures to take the place of internal membranes.
- Imagine that you discover a new type of bacteria in an environment that is exposed to oxygen. A. What type of bacteria might you have discovered? B. Propose a mechanism by which they can produce the energy neededSelect a statement that is not correct about bacterial fimbriae? A. they protect the cell from dehydration B. they are called attachment pili to distinguish them from the pili used to transfer DNA during conjugation C. they are used to attach the cell to its substrate or to other prokaryote D. they are hair-like projections that aid in attachment.What is the main difference between prokaryotic and eukaryotic cells? A. The size of the cells B. Whether or are not they are able to perform cellular respiration C. The type of enzymes that are found in the cell D. Whether or not they have a nucleus
- Which statement best describes why antifungal treatments may have side effects to our own cells? A. Fungal cells and human cells both have cells walls made of cellulose B. Fungal cells and human cells both reproduce by budding C. Fungal cells and human cells both have flagella for movement D. Fungal cells and human cells both have a nucleus, 80s ribosome, and multiple shared organellesSelect a statement that is not true about bacteria A. Some bacteria cause human disease B. Some bacteria are autotrophs C. Bacteria can be found within rocks kilometers below the Earth’s surface D. All organisms with cells containing a membrane-enclosed nucleus and organelles are eukaryotes, whereas all organisms with cells lacking a membrane-enclosed nucleus and organelles are bacteriaPseudopeptidoglycan is a characteristic of the walls of ________. a. eukaryotic cells b. bacterial prokaryotic cells c. archaean prokaryotic cells d. bacterial and archaean prokaryotic cells
- How does fluoroquinolone antibiotic drug treat infections? a. Blocking folic acid synthesis b. Blocking protein synthesis c. Inhibiting nucleic acid synthesis d. Weakening bacterial cell wallUse the following diagram to answers the questions. A. Is this cell Gram + or Gram -? Provide 2 pieces of evidence to support your choice. B. If you are infected by this bacterium can the antibiotic be effective in killing it. Explain. C. NAME and label the structures in the diagram that could be involved in conjugation? Why conjugation is an important process for the bacteriaWhat features of mitochondria are similar to bacteria? Select all that apply. A. Membrane-bound ribosomes B. Cellular machinery for photosynthesis C. Independent movement D. Circular DNA similar to plasmids