The correct answer is option 
.
The is an ion made up of two atoms nitrogen and hydrogen.
The polyatomic ions are those ions, which are formed by the binding of the two or more elements, which has a charge and act as an ion. As all others are formed by a single atom, they are not polyatomic, only is formed by two atoms, hence, it is an polyatomic ion.
Answer:
During translation process tRNA move from one binding site of ribosome (A site) towards P site.
Explanation:
Ribosome is composed of two sub units, one small and other large. It contain three binding sites for tRNA.
1. Peptidyl site:
It help in holding newly growing polypeptide chain of amino acid.
2. Acceptor site (A site):
It help in receiving and holding aminoacyl tRNA which hold amino acid that will be added to polypeptide chain.
3. Exit site (E site):
That site where tRNA leave its amino acid.
The process of translation consists of three main steps:
1. Initiation:
In this step mRNA bind to ribosomal sub unit.
2. Elongation:
The ribosome read the mRNA by joining with tRNA and help in the formation of polypeptide chain.
3. Termination:
When ribosome reach to stop codon translation stop.
When the process of translation is started, initiator tRNA carrier of methionine amino acid come and set on start codon (AUG) located in A binding site of larger subunit of ribosome. As ribosome move along mRNA attached tRNA to mRNA is shifted to p site from P to E site. It should be cleared that prolypeptide chain grow in nitrogen to carboxyl direction.
Answer:
In the cytoplasmic lipid droplets called adiposomes.
Explanation:
Triacylglycerols are the simple type of lipid consisting of three long-chain fatty acids combined with a glycerol backbone. In animals, the store of triacylglycerol is the adipose tissue and they are stored as adiposomes which are cytoplasmic lipid droplets. These droplets are encloses by a layer of phospholipid and protein, the protein gives it the hydrophobic barrier. The blood contains little amount of triacylglycerols. They serves as a major component of very low density lipoproteins and gives energy. Triacylglycerols are formed by the action of lipases on dietary fats.
The substances that protect against oxidative stress and the resultant tissue damage at the cellular level is, option B. Antioxidants. Oxidation can cause imbalance in the body. Antioxidants are used to counteract the damage produced by free radicals. Good natural sources of antioxidants include fruits and vegetables.
