Answer:
as the question is incomplete i have added the link to full question in ask for detail section.
b) Lysosome
Explanation:
After ingestion of a food particle, pH changes and enzymes contributed by the __Lysosome__ will digest and hydrolyze the ingested particle in the phagocytic vacuole.
<span>Connective tissue supports the framework of the liver, and epithelial tissue protects the liver.
Connective tissue holds the liver in place during movement, and epithelial tissue forms the lining of the liver.
Connective tissues are mainly used in forming support networks within tissues and Epithelial tissue tend to line the organs and form protective cell layers.</span>
Answer:
The miRNAs act as post-transcriptional silencers, as they are similar to specific mRNAs and regulate their stability and translation. They are small endogenous non-coding ribonucleic acid (RNA) molecules, with about 22 nucleotides, which act as regulators of gene expression in plants and animals, at the post-transcriptional level through the cleavage of a target messenger RNA (mRNA) or repression of translation.
In general, most miRNA genes are transcribed by RNA polymerase II in the nucleus in primary miRNAs (pri-miRNAs). Individually, a pri-miRNA can produce a single miRNA or contain groups of two or more miRNAs that are processed from a common primary transcript. These long pri-miRNA are cleaved by a complex comprising the double-stranded RNAse III enzyme (DROSHA) and its essential cofactor, the binding protein DGCR8 (DiGeorge Syndrome Critical Region 8 protein) in mammals. DROSHA contains two domains of RNAse III, each of which cleaves a strand of the RNA resulting in the precursor microRNA (pre-miRNA) with about 70 base pairs, which contains a double-stranded stretch and a single-stranded loop, forming a structure in clamp. The pre-miRNA is exported to the cytoplasm by the protein exportin-5 (XPO-5), where it is cleaved by DICER1, an RNAse III that assesses the 3 'and 5' ends of the pre-miRNA, generating a mature miRNA with about 22 nucleotides. The processing of pre-miRNA by Dicer promotes the unfolding of the RNA duplex in the form of a clamp. The position in the formation of the clamp can also influence the choice of tape.
Explanation:
Answer:
D. some components of the cycle are used as building blocks for certain anabolic pathways
Explanation:
Kreb's cycle starts when pyruvate enters the cycle in the form of acetyl CoA. The cycle completely breakdown acetyl CoA into CO2 and H2O. The released energy is stored in the form of NADH and FADH2 which enter oxidative phosphorylation to drive ATP synthesis. Kreb's cycle is an amphibolic pathway as it is involved in both catabolic and anabolic processes.
Some of the intermediates of Kreb's cycle serve as precursors for other anabolic pathways. For example, alpha-Ketoglutarate and oxaloacetate from Kreb's cycle enter the anabolic processes of synthesis of amino acids aspartate and glutamate respectively. Succinyl CoA from Kreb's cycle serves as one of the intermediates for the synthesis of porphyrin rings present in "heme" groups. The heme group is a structural and functional part of hemoglobin and myoglobin proteins.
Answer:
A) Biotic
Explanation:
It's definitely not abiotic and nonliving because they are living and who would categorized 'excretions of living organism' "living".
