Deoxyribonucleic acid (DNA) is the hereditary material that lies within the nucleus of all cells in humans and other living organisms. Most of the DNA is placed within the nucleus and is called nuclear DNA.
A chromosome is made up of two chromatids which are joined by the centromere. The chromatids separate from each other during mitosis to form two new chromosomes. The DNA making up a chromosome is dispersed as chromatin.
Under a microscope, chromatids look like little dots and chromosomes are lines.
Answer:
The correct answer is A) pharmaceutical companies generally do not allocate a lot of money to research for new antibiotics because they are not very profitable.
Explanation:
Bacterial resistance to antibiotics can occur due to various reasons
1 Bacterial resistance to antibiotics is generated due to overuse in agriculture and over prescribing by doctors in addition to other reasons.As a result the bacteria becomes adapted to those antibiotics.
2 Some bacteria choose to have a mutation that makes them resistant to effects of antibiotics.
3 In some bacteria random mutation occurs that make them resistant to the effect of antibiotics.
Answer: C. A gene editing tool used to cut specific genes.
Explanation:
CRISPR is simply a family of the sequences in DNA thst are found in certain organisms like bacteria. They are used in the detection and also in destroying DNA.
The CRISPR-Cas9 enables geneticist to
remove or alter parts of the gene. It is a simple, and precise method for manipulating genes.
Answer:
Kerb cycle
<u>Explanation</u>:
The result from mitochondria is ATP, that acts as a currency of the energy in the cell. In the cytoplasm of mitochondria kerb cycle occurs. In this process it has several other process, once it uses acetate and water to give NADH from NAD+ and gives carbon dioxide as waste. The NADH formed is fed by oxidative phosphorylation or electron transport. The outcome of these processes is oxidation of nutrients to give chemical energy in ATP form.