<span> purines: adenine, guanine
pyrimidines: thymine, cytosine, uracil </span>
Option A,B,C,E
Chromosomes are rod shaped structures that contain DNA, are located in the nucleus, occur in numbers that are the same for all members of a certain species, are organized into karyotypes for scientists to analyze
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Explanation:</u></h3>
A chromosome is the threadlike arrangement of DNA and protein-containing genetic erudition. Chromosomes are packaged and saved inside the nucleus. Various species have distinct amounts of chromosomes. An organism's complete assortment of chromosomes can be observed by practicing pictures of cells dividing. These pictures are then designed to produce a karyotype.
All the various chromosomes of an organism get up that organism's genome.DNA is the construction block of the genetic material observed in all living things. A very long chain of DNA can create a chromosome. In these chromosomes are areas designated as genes that code for particular proteins.
It is killing of population forcing us to self quarantine and stay away from people. Quarantine is marking many people depressed because we can’t talk or visit people face to face and it’s harming many people with anxiety and depression it’s making them worse.
Explanation:
Which is true about enzymes is: enzymes increase the rate of reactions by lowering the activation energy barrier.
Enzymes are chemical compounds in the form of proteins that act as biocatalysts which function to speed up reactions.
Enzymes work specifically, that is, they can only work on certain substrates by adjusting the shape of the substrate. Enzymes sensor with molecules for substrates to produce compounds through organic chemical reactions that require energy. Some of the reactions assisted by enzymes such as the breaking of large molecules into small ones or the binding of molecules into new molecules. Enzymes can do that because of the influence of the activation energy that every chemical reaction has.
Activation energy is the energy required to break down the reactants. The role of enzymes is to lower the activation energy limit needed to start reactions.
Learn more about enzyme at:
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