The third trimester begins at B) seven months.
The first trimester: 1-3
The second trimester: 4-6
The third trimester: 7-9.
Answer: During the day the sun heats up both the ocean surface and the land.
Explanation:
Answer: The correct answer is (a)Spring and fall when warm and cold water mixes
Spring and fall when the warm and the cold water mixes and the mixing of water evenly distributes the oxygen present in lake. During winter the cold water is below the ice and the different areas of lake have different concentration of dissolved oxygen. In summer the warm water lies above the cold water, here also the concentration of dissolved oxygen varies.
Hence, during spring and fall the warm water and cold water mixes which evenly distributes the dissolved oxygen present in lake.
Answer:
During an investigation, the addition of radiolabeled amino acids during protein synthesis occurs when the data shows high levels of radiation in protein synthesis, packaging and transport, which is equivalent to saying that radioactivity levels would first increase in the rough endoplasmic reticulum, followed by the Golgi and then the secretory vesicles (option C).
Explanation:
Protein synthesis in the cell is a process that involves the formation of polypeptide chains with the successive incorporation of amino acids.
RNA, which contains the sequence of triplets or codons that form the genetic code, is coupled to the ribosomes. Each codon or triplet consists of three nucleotides and encodes specific amino acids.
The RNA chain contains a specific nucleotide sequence and determines the assembly of amino acids to a polypeptide chain, by the action of ribosomes present in the rough endoplasmic reticulum.
In the Golgi apparatus, the proteins formed are conjugated, with the addition of carbohydrates or lipids, and arranged in secretory vesicles for transport.
In these steps, where the labeled amino acids are present, the levels of radioactivity would increase in the rough endoplasmic reticulum, the Golgi apparatus and the secretory vesicles.
Learn more:
Protein synthesis steps brainly.com/question/884041