1) What kind of chemistry makes it possible for DNA of materials being tested to lodge at only one kind of probe molecule? ( this question makes no sence to me please help)
The question you provided seems to be unclear, but I can help break it down for you.
First, let's understand the main concepts mentioned in the question:
1. DNA: DNA (deoxyribonucleic acid) is a molecule found in living organisms that carries genetic information.
2. Materials being tested: This refers to the substances or materials under investigation.
3. Probe molecule: A probe molecule is a specific molecule that is designed to bind or interact with a target molecule of interest.
Now let's try to interpret the question and provide a potential explanation:
It seems the question is asking about the chemistry that allows DNA from the materials being tested to selectively bind to only one type of probe molecule.
In order for DNA to specifically attach to a particular probe molecule, a complementary interaction between bases is required. DNA is composed of four bases: adenine (A), thymine (T), guanine (G), and cytosine (C). These bases have specific pairing rules - A with T and G with C. This binding pattern is known as base pairing.
To achieve selective binding between DNA and a probe molecule, the probe molecule would need to have a complementary sequence of bases to the DNA molecule being tested. For example, if the DNA has an A-T sequence, the probe molecule should have a T-A sequence to enable binding. This complementary base pairing allows for specific recognition and binding between the DNA and the probe molecule.
However, the question remains unclear as to what specific chemistry or technique is being referred to, as there are several methods used in DNA testing, such as polymerase chain reaction (PCR), DNA hybridization, or DNA sequencing. These techniques involve various principles of molecular biology, biochemistry, and genetics, which are beyond the scope of this explanation based on the information provided.
If you can provide more context or clarify the question, I will be happy to provide a more specific answer.