Lac genes are most effectively expressed in presence of Lactose and its analogs when glucose is absent.
Explanation:
A unit of prokaryotic gene expression and regulation,which includes structural genes and regulatory sequences recognized by regulatory gene product is called operon.
<em>Lac </em>structural genes are a part of<em> Lac</em> operon. The <em>Lac </em>operon consists of three, structural genes,an operator and a promoter.The product of Lac operon is involved in the conversion of disaccharide lactose into glucose and Galactose.
Lactose and its analogs are inducers of<em> Lac </em>operon. So, the structural genes are best expressed in presence of Lactose. Glucose and galactose are repressors of lac gene so the genes are repressed in presence of glucose.
Explanation: I think camouflage method or a design that scares away predators.
ERGONOMIC keyboards such as "Microsoft Natural Keyboard" can help prevent injuries from using the keyboard for long periods of time. Posture related injuries result from long use of laptops and computers. The ergonomic keyboards are easily adjustable by adjusting height in a particular angle.
<u>Chemical bonds between glucose molecules in starch that are easily broken by human </u><u>digestive enzymes </u><u>are called</u><u> alpha bonds.</u>
How is starch broken down into glucose?
- When you consume starchy meals, an enzyme called amylase located in your saliva and small intestine breaks down the starches into sugars like glucose, maltotriose, and maltose.
- Other enzymes, such as maltase, lactase, sucrase, and isomaltase, further break down these compound sugars into simple sugars.
What is alpha and beta bond?
- The 1,4 alpha and 1,4 beta glycosidic linkages are the two different forms of glycosidic bonds.
- When the OH on the carbon-1 is below the glucose ring, 1,4 alpha glycosidic bonds are created, whereas when the OH is above the plane, 1,4 beta glycosidic bonds are created.
Learn more about alpha bonds
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1. Number of chromosomes in the parent cell is 46
2. Number of chromatids in daughter cells formed by first division is 46
3. Number of chromosomes in daughter cells formed by first division is 23
4. Number of chromosomes in daughter cells of second division 23
5. Number of haploid cells formed by meiotic division of parent cell is 4
