Question

Please answer 3&4

W GIVOTU Muu ovat LED uro. QUESTION 3 Suppose you place yeast cells in two different environmental conditions to observe their growth. Flask A contains nutrient broth that has minimal amounts of glucose and is incubated at 37°C with aeration (like a bubbler in a fishtank). Flask B has the same media, is incubated at 37°C and is kept in an anaerobic environment. The yeast are facultative anaerobes. Which culture had the greater number of cells? Flask A Flask B Equal amounts of cells in Flasks A&B Zero growth in either flask because the cells all died. QUESTION 4 A bacterium that shows a strong positive taxis in response to very high levels of salt in solution, has a very high concentrations of hydroxide ions and prefers extremely low temperature would most appropriately be called a(n)_ _ and a xerophile, alkaliphile, thermophile halophile, neutrophile, psychrophile halophile, alkaliphile, psychrophile barophile, acidophile, thermophile Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers AT I SAT NA EN WIJ

Answer 1

Answer

3: As the yeast are facultative anaerobes, they can survive and grow both in aerobic and anaerobic conditions. It's given that both of them are provided with the same media in which glucose is minimalistic. So there is no criteria that is differentiating them actually. Both of them will have similar growth rate. So the correct option is

(C)equal amount of cells in flask A and flask B.

4. The bacteria shows the following characteristics

1. Strong positive taxis in response to very high levels of salt solutions which makes them halophile .

2. High concentration of hydroxide ions(OH) which makes them alakaliphile .

3. prefers extremely lower temperature which makes it psychrophiles.

So the correct answer is (C).

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