A codon is basically a "word" in the genetic code.
Let's start at the base. A base is the smallest unit of information in genetics. It is a chemical represented by either A, T , C, G or U.
These genetic "letters" are combined into "words" which are called codons. What is useful is that each codon is only made of 3 bases. You'll have CCT, GAT, TTA etc. So what do these words represent? Well they can be instructions, like START or STOP, but usually they represent an amino acid, the LEGO building blocks of proteins. There are around 20 AAs but a bit of maths tells us we have a lot more codon combinations than AAs. This means we have some synonyms where several codons can represent one AA.
To take the analogy further, the codons combine into "sentences" and then "chapters". The chapters are a gene, usually instructions for a complete protein, but some of the sentences are useless and will be ignored when translating into a protein.
Then we have the "Book" which is the chromosome. The reason I like to think of it as a book is that at this point it is a contained unit, a massive molecule. You can separate up your books and even lend one to a friend, but you can't do that with a chapter unless you destroy the book.
Finally you have you "library" or genome. It's not a big collection, 46 books in total, and in fact you have 2 copies of each. It's like inheriting 2 sets of encyclopaedias from your parents. They both have the same information, it is just explained in different ways.
And there is my book analogy of genetics. It's not perfect but works when used on small children.
I think the correct answer from the choices listed above is option D. It is the balance that is directly used to make measurements. Fume hood is used as a place where preparation of solutions that are harmful is done. Eye wash station is used when a chemical is being spilled to the eye. The bunsen burner is used to heat substances.
Answer: BIGGER THAN NORMAL VENTRICLES.
The most structural abnormality Darius the neurological researcher sees in the brains of individuals diagnosed with schizophrenia is enlarged ventricles (bigger than normal ventricles of the brain).
Schizophrenia is a chronic and degenerative mental disorder(originates in the brain).
It is characterised by impaired contact with reality,lack of motivation,trouble with thinking and behavior which has a gross negative effect in activities of daily living, hallucinations and delusions.
Explanation: Certain changes occurs in the brain in schizophrenia (schizophrenic attack) and one of the common changes is enlargement of the ventricles in the brain.
This enlargement in the ventricles of the brain is due to the reduction in the volume of the thalamus of the brain as well as reduction in the striatum and the superior temporal cortex of the brain.
The reduction in the volume of these brain structures results in the shrinking of the thalamus,there is also significant shrinkage of the medial nuclei, adjacent striatum and the insular cortex all found in the brain.
All these contribute grossly to the enlargement of the ventricles of the brain which is associated with schizophrenia.