Which of the following are products of fermentation? a Organic acids b Carbon dioxide (CO2) c Glucose d Lactose Which of the following are characteristics of the bacterium Shigella? a Gram-negative b Rod-shaped c Coccus-shaped d Gram-positive e Motile f Non-motile Shigellosis infects an estimated 500,000 individuals each year. Which of the following makes Shigellosis outbreaks common? a The bacterial pathogen is easily spread through respiratory droplets. b The bacterial pathogen does not promote an immune response. c Infected individuals are often asymptomatic. d The bacterial pathogen is resistant to all known antibiotics.
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Step 1: The products of fermentation include organic acids and carbon dioxide (CO2). Show more…
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1) For organisms that are facultative anaerobes, alcohol fermentation takes place only if: Select one: a. the atmosphere does not contain oxygen b. the temperature is close to 37°C c. sugar is provided to the cells d. light is provided to the cells 2) Which of the following biological molecules is amphipathic and a major component of the cell wall? Select one: a. cholesterol b. phospholipids c. proteins d. carbohydrates 3) A scientists observes several fossils in a river bed. Based on these observations, she concludes that invertebrates once dominated that ecosystem. This is an example of inductive reasoning. Select one: True False 4) Which of the following generates the most ATP per glucose molecule? Select one: a. fermentation b. anaerobic cellular respiration c. glycolysis d. aerobic cellular respiration
Sri K.
a) Which of the following GEM examples is not matched appropriately? Group of answer choices (pick 1) Biofuels: microbes are genetically engineered to produce enzymes that can convert plant sugars to biofuels Chymosin: the chymosin gene from a cow is inserted into yeast that can express the enzyme used for cheese production Bti mosquito control: composed of a bacterium with unique plasmids that code for toxins to damage mosquito larvae that feed on the bacteria HT crops: engineered to express a gene product that blocks glyphosate from entering the plant cells Microbial enhanced oil recovery (MEOR): multiple plasmids that convey the ability to metabolize specific components of oil are introduced into bacteria b) Fermentation can be necessary for bacteria when there are no better options because Group of answer choices (pick 1) the fermentation step generates a proton gradient NADH must be recycled back to NAD+ in order for glycolysis to continue pyruvate can be toxic for bacteria the fermentation step generates a lot of ATP fermentation products can serve as a terminal electron acceptor so that chemiosmosis can resume
Choose the best answer for each question. When animals carry out fermentation, they produce ________ while yeasts produce ____________. a. lactate, NADH b. lactate, ethyl alcohol and $\mathrm{CO}_{2}$ c. NADH, ethyl alcohol and $\mathrm{CO}_{2}$ d. $\mathrm{FADH}_{2}$, lactate e. ethyl alcohol and $\mathrm{CO}_{2}$, lactate
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