The answer to the above question is Fatty acids.
<h3>What are
Fatty acids?</h3>
A fatty acid is a carboxylic acid with an aliphatic chain that is either saturated or unsaturated. This definition applies to chemistry, particularly biochemistry. The majority of naturally occurring fatty acids have an unbranched chain with 4 to 28 carbon atoms, which is an even number. In some species, like microalgae, fatty acids make up a significant portion of the lipids (up to 70% by weight), but in other organisms, they are present as one of the three main types of esters: triglycerides, phospholipids, or cholesteryl esters rather than in their solo form. Fatty acids are crucial nutritional sources of energy for animals in any of these forms, as well as crucial cellular building blocks.
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Answer:
thyroid storm
Explanation:
It is a life-threatening condition characterized by severe clinical manifestations of thyrotoxicosis. Extreme hyperthyroidism can lead to heart failure, a condition called throtoxicosis.Over-secretion of thyroxine is often due to the presence of plasma proteins that stimulate thyroid activity, i.e., defective enzymatic reactions.Thyroid storm can lead to osteoporosis, heart failure and atrial fibrillation.
Answer:
Xylem and phloem
Explanation:
Xylem and phloem (b) option is correct
Overweight because there is no room because of the amount of fat that is taking up space
Answer:
False
Explanation:
The histones that are more positively charged, tight hardly to negatively charged DNA. So, enzymes, such as acetyltransferases, that reduce the positive charge of histones promote transcription.
Chromatin structure and its modifications can change the package of the DNA and consequently, alter the gene expression. The most common modifications of the chromatin are covalent modifications such as acetylation/deacetylation (by acetyltransferases and eacetylases), methylation (by methyltransferases), and phosphorylation (by kinases). This is the way of gene expression regulation.
The effects of modifications are different, for example methylation promotes condensation of the chromatin and as a consequence, prevents binding of transcription factors to the DNA (transcription is repressed).
Acetylation loosens the association between nucleosomes and DNA (because it neutralizes the positive charge of histones) and consequently promotes transcription. Deacetylation is a process opposite to acetylation.
