Answer:
No.. I think they are made up of nucleotides
Explanation:
Some processes can't be performed by then, as they are performed in Multicellular organisms like excretion, neural system, hormonal system etc.. otherwise single cell can sustain a life on its own
siRNA prevent gene expression by binding to the product of transcription because <u>they bind to mRNA</u>
Explanation:
siRNA are short-sequence RNA strands, about 20 bp long, that bind to complementary regions on transcribed mRNA. This causes the formation of regions of dsRNA on the mRNA. This subsequently result in recruitment of enzymes such as Diver enzyme to cleave the mRNA and hence rendering it ineffective for translation into proteins. This is how siRNA negatively regulate genes, a process that has also been identified in research as a window to remedy genetic diseases.
Learn More:
For more on gene regulation check out;
brainly.com/question/7196655
brainly.com/question/12872159
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Answer: Bones cells secrete an extracellular matrix that when combined with minerals becomes rock hard.
Explanation: