Answer:
Hello! Here are the answers:
- Chromosomes are a highly condensed form of a combination of DNA and protein called chromatin. DNA strands (negatively charged) are tightly wound around these proteins called histones (positively charged) to form chromosomes.
- Mechanism genes code for for proteins that govern life processes. These genes or portions of DNA are called exons. DNA segments between these exons are called introns that strictly code for regulatory proteins and also contain genetic regulatory elements (DNA sequences that control gene expression).
- Gene expression is the process of translation of DNA sequences into proteins. The genetic code is the nucleotide sequence in the DNA itself that codes for different amino acids that combine together to form a functional protein.
Explanation:
* 2. The intronic regions are misleadingly referred to as "junk DNA" but introns code for crucial regulatory elements that control gene expression.
* 3. The genetic code determines the sequence of amino acids in various proteins.
Answer:
according to the image .the given element is Mg is the answer
<h3><u>Answer;</u></h3>
a nebular cloud of dust and gas
All of the celestial bodies of the solar system were said to have formed <u>from a nebular cloud of dust and gas.</u>
<h3><u>Explanation</u>;</h3>
- The solar system is composed of the sun and all the planets and other bodies that travel around it. A planet is a celestial body that orbits the sun.
- <em><u>According to solar nebula theory, a solar nebula is where the sun and planets were formed from. Solar nebula is a rotating cloud of gas and dust.</u></em>
- The sun is composed of about 99 percent of all the matter that was contained in the solar nebula. During formation of the solar system, the sun was forming in the center of the solar nebula, while planets were forming in the outer regions.
Helium could hold 2 neutrons in its nucleus.
The answer would most likely be B, diffusion. Diffusion is the process of molecules going from an area of higher concentration of those particles (around Tammy) to an area of lower concentration (around Jim who is across the room), without the use of energy, as they are going with the concentration gradient (higher concentration to lower concentration). In this question, the molecules would be the molecules of Tammy's perfume. The area around her has a higher concentration of perfume particles, as she sprayed the perfume on herself. The area around Jim would be the area of lower concentration, as there are less molecules of perfume around him. Osmosis is the diffusion of water molecules from an area of higher water concentration to an area with a lower water concentration through a semi-permeable membrane. Active transport is the process of diffusion, however, it requires energy as the molecules go across their concentration gradient (from low concentration to high concentration). Facilitated diffusion is the process by which molecules go from a higher concentration to a lower concentration. However, the molecules go through a cell's membrane with the aid of proteins on the membrane. Therefore the answer would be diffusion.