Answer:
first 4, then 2, then 1, and lastly 3
Explanation:
First, RNA polymerase binds to the promoter region of a gene on the DNA and initiates transcription. Transcription is the process by which we get mRNA (coding RNA) which is used as a template for protein synthesis. Then, in transcription, the resulting mRNA undergoes modification and maturation. This involves removal of introns, addition of 3'-poly-A tail and 5'-cap. Introns are sequences that do not code for protein and are hence removed. The structure that removes introns is the spliceosome. Thirdly, mature mRNA travels to the cytoplasm. Ribosome (composed of rRNA) binds to mRNA and tRNA to start the process of protein synthesis. The process of formation of protein is called translation. Lastly, the primary structure of protein may undergo folding to form a tertiary structure.
Answer:
E. Photosynthesis is an anabolic reaction, and cellular respiration is a catabolic reaction.
Explanation:
Anabolic or endergonic reaction is a type of reaction that uses energy. In this type of reaction small, simple molecules join to make larger complex molecules. For example photosynthesis, during which carbon dioxide and water are react to synthesise glucose and oxygen.
Catabolic or exergonic reaction is a type of reaction that gives energy. in this reaction large molecules are broken down into smaller ones. For example respiration, during which glucose in presence of oxygen is broken into carbon dioxide and water.
Adaptions are basically add-ons and/or updates while variations are like different types.
<span>1.
</span>They act as activators of transcription. This is
through increasing the affinity of the RNA polymerase on the promoter
<span>2.
</span>They could act as repressors. This way, when
they bind to their active sites, they
repress the binding of the RNA polymerase on the promoter
<span>3.
</span> Transcription factors at one site could affect transcription of genes on another site on the
DNA. The flexibility of the DNA (by forming loops) allows for this phenomenon.
Pizza enters your mouth and you mechanically break down food into smaller pieces and your saliva breaks down food chemically. The food then passes through your esophagus and into the stomach where the food is further broken done by mechanical and chemical digestion. And then once the food enters your small intestine the nutrients get absorbed by the walls of the small intestine and into the blood stream, the blood then takes these nutrients to the different parts of the body and cells use this nutrients to create energy through cellular respiration.
