Answer:
An atom is the smallest particle in a chemical element that holds its chemical properties. Although in the past it was thought impossible to break an atom, within modern chemistry we know that an atom is composed of subatomic particles, which compose the atomic model:
1) electrons, which have a negative charge, such a small size that it is immeasurable, and a mass much smaller than the other two subatomic particles; 2) protons, which have a positive charge; and 3) neutrons, which have no charge.
The protons and neutrons form a dense and massive atomic nucleus, which is called multipons nuclei. The electrons form a cloud of electrons that surround the nucleus.
Answer:
Oxygen is reduced, gaining electrons and hydrogen ions. -second choice
The colors for the stars are red, white, blue-white, white, and blue, and their temperature are 3,910 K, 3,500 K, 25,200 K, 22,400K, 5,780K, 9,600 K.
<h3>What is a star?</h3>
A star is a type of celestial body that can be set apart from others because it shines due to inner radiation. Moreover, stars are classified by:
- Color
- Size
- Location
- Temperature
- Age
Now, let's identify the color and temperature of the stars:
- Aldebaran: This star has a temperature of 3,910 K and its color is red.
- Betelgeuse: This star has a temperature of 3,500 K and its color is red.
- Sirius B: This star has a temperature of 25,200 K and its color is white.
- Spica: This star has a temperature of 22,400K and it is a blue-white star.
- The Sun: This star has a temperature of 5,780K and its color is white.
- Vega: This star has a temperature of 9,600 K and it is a blue star.
Learn more about stars in: brainly.com/question/2166533
Answer:
as a dimer consisting of two identical monomers (80 kDa subunits) that are packed together via hydrophobic interactions
Explanation:
SDS-PAGE (sodium dodecyl sulphate–polyacrylamide gel electrophoresis), is an electrophoretic methodology used to separate proteins that have a molecular weight between 5 to 250 kDa. SDS is a well-known ionic detergent that is able to break hydrophobic interactions and hydrogen bonds. Moreover, size-exclusion chromatography is a filtration technique that separates molecules in solution according to their molecular size. In this case, SDS-PAGE showed that the target protein is composed of two identical subunits (monomers) of 80 kDa each, which were separated by the detergent and formed one single band in the SDS-PAGE gel.
