Peptide hormones are generated in the endoplasmic reticulum. Moreover, steroid hormones are generated in the endoplasmic reticulum and mitochondria.
<h3>What are peptide and steroid hormones?</h3>
Peptide hormones are hormones composed of amino acids, whereas steroid hormones are composed of lipids.
Peptide hormones are generated in the ER and then transported to the Golgi apparatus to be included in secretory vesicles for secretion.
Steroid hormones aren't stored in secretory vesicles and are transported by using serum proteins in the blood.
Learn more about peptide hormones here:
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The pH will decrease because lemon juice is very acidic meaning it would bring the pH level down to a more acidic value.
Answer:
Regulatory sites e.g enhancers and silencers
Explanation:
Gene expression involves the synthesis of gene products usually proteins and RNA. However, a certain product might not be needed at all or in small quantity. Gene regulation mechanism is the process that makes this happen. Gene regulation is the mechanism that acts to induce or repress the expression of a gene.
Gene regulation involves controlling the rate and manner of gene expression which is achieved through a set of regulatory proteins called transcription factors. Transcription factors bind to specific regulatory nucleotide sequences and help to turn "on or off" specific genes in the DNA.
Transcription factors can either be ACTIVATORS or REPRESSORS depending on whether they boost or inhibit gene expression. The binding sites for these regulatory proteins called TRANSCRIPTION factors are the regulatory nucleotide sequences on the DNA called enhancers and silencers.
Answer: C) Centromeres
Explanation: Centromeres are involved in crossing over, none of the other ones are.
