Which of the following statements is false? a) microbial cells can exist as single cells. b) microbial cells carry out their life processes of growth independently. c) microbial cells include both bacteria and viruses. d) microbial cells are surrounded by a plasma membrane

C

Explanation:

Viruses are normally not considered as microbial cells, and normally they are considered as agents that pack genetic material (either DNA or RNA). In order to survive and replicate (multiply in number) viruses rely on other life forms as they can only replicate inside living cells from different origins, could be humans, animals and even bacteria. Therefore, they are unable to exist as single cells and carry out life process of growth independently.  

I hope this clarify your inquiry.  

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.

a. the production of carbon dioxide through the process of photosynthesis