<span>Point source pollution is an identifiable source of pollution from which pollutants are released. So it is true</span>
<span> After fertilization, the </span>zygote<span> undergoes cleavage to form the blastula. The blastula, which in some species is a hollow ball of cells, undergoes a process called gastrulation, in which the three germ layers form.</span>
Answer: 1st is chloroplast 2nd is mitochondria 3rd is nucleus 4th is cell wall 5th is cytoplasm 6th is cell membrane 7th is vacuoles which is called central vacuole in plant cell
Explanation:
Answer:
The correct option is (A).
Explanation:
The base-pairing rule illustrates the pairing of purine and pyrimidine bases in the construction of nucleic acids. Adenine and guanine are purines and pyrimidines are cytosine, thymine, and uracil.The total number of base-pair defines the size of the genome of an organism.
Uracil is exclusively present in the RNA. We can infer that purine base pairs with pyrimidine. So, adenine pairs with thymine in the DNA strand with the help of two hydrogen bonds and guanine pairs with cytosine that is supported by the presence of three hydrogen bonds.
In case of RNA adenine forms double bond with the uracil residue.
In translation, messenger RNA (mRNA<span>) is decoded in a </span>ribosome<span>, outside the nucleus, to produce a specific amino acid chain, or polypeptide. The polypeptide later folds into an active protein and performs its functions in the cell.</span>
