Answer: The correct answer is - 3) olfactory receptors neurons that detect smell. 4) photoreceptors neurons that detect light .
1) and 2) statements are correctly matched in the question..
Olfactory receptors are also called odorant receptors. The olfactory receptor neurons detect smell and thus give a sense of smell to the organism. They are present in the nasal cavity.
Photoreceptor neurons are those that detect light and they are present in the retina of eye.
The answer to this question is A
In the genetic code, codons made of of three bases specify an amino acid. With three bases, there are 64 possible permutations. With three codons corresponding to STOP codons, this leaves 61 combinations that code for an amino acid. This would require 61 distinct tRNA species were it not for the "wobble base"
The seven major plates<span> are the African </span>plate<span>, Antarctic </span>plate<span>, Eurasian </span>plate<span>, Indo-Australian </span>plate<span>, North American </span>plate<span>, Pacific </span>plate<span>and South American </span><span>plate</span>
