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kolbaska11 [484]
3 years ago
5

13. Are ALL genes expressed in ALL cell types?

Biology
1 answer:
Angelina_Jolie [31]3 years ago
7 0

Only a fraction of the genes in a cell are expressed at any one time. The variety of gene expression profiles characteristic of different cell types arise because these cells have distinct sets of transcription regulators

Hope this helped you

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Describe the cycle of an enzyme as it catalyzes a reaction.
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Answer: Enzyme bind to the substrate and increase the reaction rate so catalyze a reaction.

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The cycle of enzyme catalysis reaction is as follows :

1. Cycle starts with the binding of enzyme to the substrate, binding takes place at the active site of enzyme.

2. When substrate perfectly fits in active site of enzyme ,  the binding of enzyme and substrate results in the formation of enzyme-substrate complex.

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Adhesins are usually located on __________ of the pathogen and are composed mainly of __________ and __________.
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Thus, the correct answer is - surface, proteins, and sugars.

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