The diagram shows the structure of a typical bacteria cell - Leaving Cert Biology - Question c - 2021
Question c
The diagram shows the structure of a typical bacteria cell.
(i) Identify the bacterial structures labelled A, B, C on the diagram.
(ii) What is the function of C?
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Worked Solution & Example Answer:The diagram shows the structure of a typical bacteria cell - Leaving Cert Biology - Question c - 2021
Step 1
Identify the bacterial structures labelled A, B, C on the diagram.
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Answer
The bacterial structures labelled are:
A: Capsule (or cell wall, allow slime layer)
B: DNA (or nucleoid or chromosome)
C: Cytosol (or cytoplasm)
Step 2
What is the function of C?
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Answer
C, or cytoplasm, functions to facilitate metabolism, maintain the shape of the cell, and hold the internal components of the cell. It stores vital nutrients and is the site for many biochemical processes.
Step 3
What is meant by the term asexual reproduction?
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Answer
Asexual reproduction refers to a mode of reproduction where a new organism is produced from a single parent organism without the involvement of gametes. This process allows for genetic continuity.
Step 4
Name the type of asexual reproduction used by bacteria.
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Answer
Bacteria primarily reproduce through binary fission.
Step 5
State any two factors that affect the growth of bacteria.
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Answer
Temperature - affects enzymatic activity and metabolism.
pH - influences enzyme function and bacterial survival.
Step 6
Describe two examples of the economic importance of bacteria.
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Answer
Dairy products - Bacteria are used in fermentation to produce yogurt and cheese.
Antibiotics - Certain bacteria are harnessed to produce essential antibiotics that combat infections.
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