The lac operon is an operon required for the transport and metabolism of
lactose in Escherichia coli and many other entric bacteria. It includes
the promoter, regulatory and the operator.
Answer: C. repressor gene
Answer:
The Kingdom of Protista
Explanation:
Organisms that belong to the kingdom Protista are unicellular, and eukaryotic (cells with a true nucleus and membrane-bound organelles). Protists can be both heterotrophic and autotrophic, and they usually move by flagella or cilia.
B. Hold large amounts of food.
Some parts of plant materials, like cellulose, are hard to digest. The digestive tract of herbivores is adapted so that the food can be digested properly.
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