DNA in the nucleus of eukaryotic cells is collected into a chromatin.
A chromatin is a complex of nucleic acids (DNA or RNA) and proteins called histones which condense to form a chromosome during cell division.
In eukaryotic cells, it is found within the cell nucleus while in prokaryotes, it is found inside the nucleoid .
Its functions are;
1. to package DNA into a smaller volume to fit in the cell.
2. strengthen the DNA to allow mitosis and meiosis.
3. acts as a mechanism to control expression
The chromatin is easily recognized through staining. Its name literally means "colored material."
Genes are located on chromosomes and these chromosomes are passed into the gametes in sexual reproduction. If two genes are closely linked, it is likely that their positions on a chromosome are close together. This is why they are likely to be sent into the same gamete of the parent and inherited by the offspring.
Dr. Jemison, the first woman of color in the world to go into space, served six years as a NASA astronaut. She flew aboard the Space Shuttle Endeavour, STS-47 Spacelab J(apan) mission in September 1992 and was NASA’s first Science Mission Specialist performing experiments in material science, life science and human adaptation to weightlessness.
Answer:
erosion - usually on a river bend
deposition - near the mouth of the river
hope this helps, good luck :))
Answer:
From least to most energetically favorable, the reactions are:
Glucose to Glucose-6-P (least) ; Glucose-6-P to Fructose-6-P; ATP to ADP and Pi; PEP to pyruvate (most favorable)
Explanation:
ΔG represents the free energy change that occurs during a chemical reaction. A reaction with negative free energy change is exergonic and spontaneous. Negative free energy change represents the fact that reactants have more free energy than products. The excess of the energy is released during the reaction and makes it a spontaneous process.
q`On the other hand, a reaction with positive free energy change is endothermic and non-spontaneous. These thermodynamically unfavorable reactions are coupled with other exergonic reactions to make them occur.
Among the given example, PEP to pyruvate has the highest negative free energy change (−14.8 kcal/mol) and therefore, is energetically most favorable. On the other hand, "Glucose to Glucose-6-P" has the highest positive free energy charge (+3.3 kcal/mol) making it energetically the most unfavorable reaction.
