
a.
To determine:
The comparison and contrast between passive and active forms of transport, also to provide an example of molecule transported by each and the requirements of each process.
Introduction:
The active transport uses the cellular movement of molecules across the cell membrane. It involves processes such as endocytosis and exocytosis. Passive transport is the movement of molecules across the cell membrane without using cellular energy. It involves processes such as osmosis and diffusion.
b.
To describe:
The process used by saprobic microbe to transport food particles
Introduction:
A saprobe microorganism is a heterotrophic organism which generally feeds on dead organic materials and obtains energy by the decomposing organic material. They secrete enzymes which digest the organic material and the digested nutrients are absorbed by the cells.
To compare:
The transport of digested molecules in a saprobic microorganism and the feeding mechanism of amoeba
Introduction:
Protozoans are animal-like protists that can move around. Their means of movement are through flagella and cilia. These are heterotrophic and derive their nutrition from consuming other organisms.

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Chapter 7 Solutions
Microbiology: A Systems Approach
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