Answer: You can tell when a chemical reaction is taking place because it is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change. All these things characterize what you look out for to find a chemical change.
Explanation:
Answer:
Copying of DNA to form an mRNA strand
Explanation:
In transcription, DNA is copied to form an mRNA strand with complementary bases.
The DNA strand being copied during the process is called the template strand, and the mRNA that is made will be created from that strand.
This is the first step of protein synthesis.
This strand of mRNA is further used during translation, where it is used to code for amino acids to make proteins.
So, the correct answer is Copying of DNA to form an mRNA strand
The study of artificial selection by Darwin helped him to establish his theory of evolution via natural selection. One of the animals Darwin examined in detail was the domestic rock pigeon. In the 1850s breeding of pigeons was an ancient past time, thus, Darwin decided to keep and breed the pigeons by himself.
While studying pigeons, Darwin established scrupulous determinations of their skeletons and wondered at the breeds' distinct colors, behaviors, and proportions. He also observed the patterns of inheritance of various features, and he demonstrated that birds of very distinct breeds can, however, generate fertile offspring. Thus, supporting the theory that they all originated from a single species.
<span>The sequence of three bases (triplet) in a transfer RNA molecule</span>
Answer:
Growth hormone
Explanation:
It is called growth hormone or somatotropin or peptide hormone because it is a substance that control and is responsible for the growth and development of some essential Tissues and cells in the body.
It is secreted by the anterior lobe of the pituitary gland located at the base of the brain.
The growth hormone help children grow taller,increase body mass and help reduce body fat.
