The decimal reduction time refers to the amount of time it takes to which of the following?
reduce a microbial population by 10%
reduce a microbial population by 0.1%
reduce a microbial population by 90%
completely eliminate a microbial population

The correct option is: reduce a microbial population by 90%

Explanation:

In a sterilization procedure, the decimal reduction time is the required time to achieve a log reduction i.e. reduce the microbial population by killing the 90% of the relevant microbial population, at the given set of conditions. Therefore, after the exposure time of 1 D, only 10% of the microbial population remains.

yes i have all the correct answers

1. c 6. b. 11. c

2. a 7. d. 12. d

3. c 8. b. 13. c

4. d 9. c. 14. d

5. c 10. d. 15. a

16. d. 21. a

17. d.

18. a. 22-30 you must do on

19. d. your own

20. d.

phylogenetic tree is the tree of life or evolution tree. it shows the different branches of evolution. the sequence goes like tissues - coelom - backbone - endoskeleton - segmentation