Question

this is a very tough homework assignment for my environmental biology course so if everyone could please help me I would greatly appreciate it because I have no access to tutors to check my work.

which of the following is correct about binary fission? A) It is a common type of microbial cell division. B) Daughter cells are identicals. C) It leads to a microbial population. D) All of the above To decide if you should replace the existing antibacterial product used in your clinic with a new product, you measure g of Staphylococcus aureus after applying the new product. If the new g is the previous g. the new product is more effective at inhibiting the growth of S. aureus than the existing product. A) shorter than B) the same as C) longer than D) similar to 3) At 1 pm, you inoculated 1000 bacterial cells in a sterile broth. The lag phase takes 2 hours. These cells divide once every hour in broth. How many cells will be in the new culture at 4 pm? A) 1000 B) 2000 C) 3000 D) 4000 4) You are designing a new drug which can potentially disrupt a steadily growing microbial population. Which phase of the growth curve does this new drug target? A) Lag phase B) Log or exponential phase C) Stationary phase D) Death phase 5) Why do cells enter stationary phase in a closed system like a test tube or agar plate? A) Depletion of nutrients B) Accumulation of toxic wastes C) Cell division equalized by cell death D ) All of the above 6) Which of the following are NOT found in a sterile medium, both liquid and solid? A) Living organisms B) Macronutrients C) Buffer D) Micronutrients 7) You collect cells in the to study endospore formation/sporulation, and cells in the _to study mature dormant endospores. A) Lag phase; Log phase B) Log phase, Stationary phase C) Stationary phase, Death phase D) Death phase, Log phase 8) You are given an agar plate with many colonies and labeled Proteus mirabilis. How can you proceed to start a pure culture of P. mirabilis ? A) Transfer cells from a well-isolated colony. B) Use aseptic technique to prevent contamination. C) Transfer cells to a sterile broth. D) All of the above 9) Which of the following is NOT CORRECT about a well-isolated colony of P. mirabilis? A) Each colony is a population of identical cells. B) Each colony is a supercell that has completed the growth curve. C) Each colony is made up of P. mirabilis cells. D) Each colony originated from one P. mirabilis cell.

Answer 1

• Which of the following statements are correct about binary fission

Answer- D. All of the above

In binary fission a bacteria into two daughter cells.

The two daughter cells are identical and it is a form of asexual reproduction.

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