Answer: the aminoacyl tRNA synthetase
Explanation:
Before an amino acid can be incorporated into the growing polypeptide chain in the ribosomes, they must first recognize and be attached to a their cognate tRNAs through a process called tRNA charging/loading. This process also called aminoacylation is aided by the aminoacyl tRNA synthetases also called tRNA ligases. Failure of the enzymes to carry out the correct charging are determined resulting in cellular dysfunctions. The process occurs in 2 steps
1. The enzymes binds ATP to the amino acid to form a complex of amino acid-AMP.
2. The amino acid is then linked with tRNA and the AMP is released this the tRNA is "charged" and ready to function
I think the correct answer from the choices listed above is option B. Koalas are the least likely to survive a change in its ecosystem because they only eat eucalyptus leaves. They have limited food as compared to the other choices which are able to thrive at various conditions.
Answer:
The authority of EPA set several standards for drinking water quality,water suppliers,localities etc.
Explanation:
The regulations are-
1) National Primary Drinking Water regulations-
This regulation is legally possible which is applied in public water system.Primary standards protect public health by controlling the contaminants present in drinking water.
2)National Secondary Drinking water Regulations-
These regulations don't set any proper guideline to control contaminants present in water.
3)Unregulated Contaminants-
The Safe Drinking Water Act (SDWA) is a process through which EPA have to enlist the unregulated contaminants that are require in National drinking water regulations.EPA uses there unregulated contaminants and collect data that will help us to determine that whether we have to regulate that contaminants or not.
