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photosynthesis and cellular respiration

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Details: There are two main types of cells: prokaryotic and eukaryotic.

Bacterial cells are prokaryotic. Select two structures of bacterial cells and briefly describe them; what do they look like, what are they composed of? Then, explain how these two structures allow bacterial cells to survive as unicellular organisms.
There are many examples of eukaryotic cells. Algae, Fungi, Plants, and Animals are all composed of eukaryotic cells. Some algae and fungi are unicellular organisms, but other algae and fungi, and all plants and animals are multicellular organisms that are composed of specialized eukaryotic cells that interact to support the life of the multicellular organism.
Choose either a plant or an animal cell. Choose two structures or organelles of the cell (not used in part one above.) Describe these two structures or organelles - what do they look like, what are they composed of? Then explain how these plant or animal cell structures or organelles function. How do these functions support activities of the plant or animal cell and enable survival of the multicellular plant or animal organism?

Objective: Explain the processes of photosynthesis and cellular respiration.
Describe the relationship between chemistry and the characteristics of living things.

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Solution Preview

Bacterial cells are primitive in nature. Hence, they are known as prokaryotes. A typical bacterial cell is made up of two outer coverings i.e., the cell wall and the cell membrane. In most cases, the pathogenic, freshwater, and marine bacteria are made up of an outermost third protective layer known as the Slime or the Capsule.

1.The capsule:It is a sticky substance that is secreted by prokaryotes such as Bacteria. It assists in protecting the bacterial cell. It mainly comprises of polysaccharides. Capsule is present outside the cell wall among bacteia that are pathogenic. For instance, Escherichia coli. The capsule is thick, viscous and gelatinous in nature. Slimy bacterial cells are mostly covered by a capsule. The functions of the capsule are: It assists the bacterial cells to adhere to their respective substrates, thus providing additional protection. It provides increased resistance to pathogenic bacteria against the defense mechanisms/antibodies of the host cell. It also helps to glue the bacterial cells together, thus allowing them to form colonies. It keeps the ...

Solution Summary

The relationship between chemistry and the characteristics of living things is depicted.

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