<u>Answer:</u>
D. Antimicrobial peptides; disrupt positively charged bacterial membranes
The above skin defenses and its mechanism is mismatched
<u>Explanation</u>:
Antimicrobial peptides which is considered as a natural antibiotic. It is produced by all types of living organisms for example plants, animals, and also bacteria. It is also known as host peptides. The rich source of antimicrobial peptides is noticed as amphibian skin glands. It is different and a diverse class of molecule. It is commonly between 12 and 50 amino acids. It is also called as innate immune response which is found among all classes of life. It disrupts positively charged bacterial membrane, fungi, enveloped viruses and cancerous cell
Answer: Turn the rotating nosepiece.
Explanation:
You would add H+ ions if you added an acid. Thus lowering the pH.
Isotopes are variants of a particular chemical element which differ in neutron number (neutral particle)and all isotopes of a given element have the same number of protons (positive particle) in each atom.So isotope B of the sodium will have 11 protons, 11 electrons but it may have a wide range in its number of neutrons.
Repressor slows down transcription.
RNA Polymerase enzyme transcribes mRNA from DNA.
Explanation:
Promoters are the 100 to 900 bps long sequence of DNA, that helps in the initiation of transcription. The transcription gets slow down as repressor bind to the promoter region hampering the attachment of RNA Polymerase enzyme which is responsible for transcription.
The process of transcription is the conversion of DNA into mRNA as told in the central dogma of molecular biology. Enzyme responsible for transcription is RNA polymerase. It is the first phase of gene expression, where DNA strand is copied into mRNA called a primary transcript.
