7:01 PM a mybb.qu.edu.qa Due Date Sunday 30-9-2018 80%) Se 1- Microorganisms tha

Question

7:01 PM a mybb.qu.edu.qa Due Date Sunday 30-9-2018 80%) Se 1- Microorganisms that can be found thriving in icy-cold climates would be considered a. barophiles c. mesophiles d. psychrophiles e. bibliophile 2- If you carried out an experiment growing different types of microorganisms in liquid culture, which type of organism would you find congregated just a little below the liquid's surface? a. obligate aerobes b, obligate anacrobes d. acrotolerant bacteria 3-Which microbe would you most likely find in large numbers in an extremely hypertonic salty environment? b. Bacills d. E. coli e. Salmonella 4-IfI start with one bacterium (generation 0), how many bacteria would I have by generation 4 produced by binary fission? c. 8 d. 16 e. 32 S-Which phase in a population growth curve is associated with no increase or decrease in population? a. lag phase

Explanation / Answer

1 option (d) is correct.

Explanation psychrophilies are microbes which have capable of thrive their life in extreme cold conditions.

2. Option (a) obligate aerobes .

Explanation the microbe present on Little below the surface of water are obligate aerobes because they require oxygen.

3.option (d) is correct E. Coli.

Explanation bacteria are able to survive in hypertonic condition due presence of rigid cell wall and special type of enzyme.

4 option (c) is correct

Explanation when a bacterial cell divides by binary fission it will produce 2copy or 2daughter cell after division. So after 4genration no. cells will be 8 in numbers .

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