Answer:
The gene for beta-galactosidase turns off.
Explanation:
The gene that codifies the beta-galactosidase enzyme is part of the <em>lac</em> operon, which also contains two other genes that produce enzymes involved in the metabolization of lactose.
Between glucose and lactose, the bacteria will preferentially use glucose as an energy source. On the other hand, lactose is a dimer, and thus a series of enzymes are needed to process lactose before its use as an energy source.
If there is no lactose present, the genes contained inside this operon are turned off (the operon is repressed).
The ciliates<span> have both a </span>micronucleus<span> and </span>macronucleus<span>, which appear quite homogeneous in composition. The organelles of protozoa have functions similar to the organs of higher animals. The </span>plasma membrane<span> enclosing the </span>cytoplasm<span> also covers the projecting locomotory structures such as </span>pseudopodia<span>, </span>cilia<span>, and </span>flagella<span>.
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Pride can be a positive trait as it helps an individual gain confidence in their work and skills, making them more successful and happier. However, pride can be negative as it may cause one to believe they are entitled to their success, and also may cause them to treat others inferiorly. Hope this helps! :)
Each double bond in carbon dioxide represents two pairs of electrons which are shared between the carbon and oxygen atoms.
<h3>What is an Electron?</h3>
This refers to a subatomic particle which has a negative charge and is involved in chemical reactions.
Each double bond in carbon dioxide represents two pairs of electrons which are shared between the carbon and oxygen atoms so as to enable them achieve an octet configuration.
Read more about Electron here brainly.com/question/860094
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