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Schach [20]
2 years ago
13

In which of the following ways can scientific knowledge change and grow?

Biology
2 answers:
allochka39001 [22]2 years ago
4 0

I think That it might be D

insens350 [35]2 years ago
3 0

Answer:d

Explanation:

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(a). the reaction, to produce soap can be completed by cooking animal fat with a very strong solution of
Gemiola [76]
The reaction to produce soap can be completed by cooking animal fat with a very strong solution of SODIUM HYDROXIDE.
This process is called saponification. Chemically, animal fat and strong solution of sodium hydroxide or potassium hydroxide mixed together to produce soap and glycerol.<span />
4 0
3 years ago
Mutations rII1 and rII2 are known to fall into the rIIA and rIIB cistrons (genes) respectively. Cells of E. coli B are infected
viktelen [127]

Answer:

the answer is A. E. coli B

Explanation:

The multiplicity of infection (MOI) refers to the ratio between the numbers of viruses used to infect <em>E. coli</em> cells and the numbers of these <em>E. coli </em>cells. Benzer carried out several experiments in order to define the gene in regard to function. Benzer observed that <em>E. coli </em>strains with point mutations could be classified into two (2) complementary classes regarding coinfection using the restrictive strain as the host. With regard to his experiments, Benzer observed that rII1 and rII2 mutants (rapid lysis mutants) are complementary when they produce progeny after coinfect E. coli K (where neither mutant can lyse the host by itself). The rII group of mutants studied by Benzer does not produce plaques on <em>E. coli</em> K strains that carry phage λ (lysogenic for λ), but they produce plaques on <em>E. coli</em> B strains. This study showed that rIIA and rIIB are different genes and/or cistrons in the rII region.

3 0
3 years ago
In cocker spaniels, black color (b) is dominant over red (b), and solid color (S) is dominant over spotted (s).
Levart [38]

Answer:

<h2>e) 3/4 </h2>

Explanation:

As given;

Black (B) is dominant over red (b), so B is dominant over b.

Solid (S) is dominant over spotted color(s), so S is dominant over s.

Offspring of BBss and bbss individuals are:

Gametes of parent BBss are Bs, Bs and gamete of bbss are bs, bs

offspring are : all Bbss

Cross between these offspring is; Bbss×Bbss

Gametes of parent Bbss are: Bs and bs  as given that the genes are linked.

Bs, bs × Bb, bs

Offspring are = BBss, Bbss, Bbss, bbss

Black spotted (B_ss) = 3/4

3 0
3 years ago
Identification of key microRNAs and the underlying molecular mechanism in spinal cord ischemia-reperfusion injury in rats
alexdok [17]

The underlying molecular processes for 19 important DE miRNAs in the etiology of SCII were confirmed. The DE miRNAs could serve as potential intervention targets for SCII. Additionally, blocking microRNAs-3568 reduced apoptosis and preserved hind limb function after SCII, possibly via modulating GATA6, GATA4, and RBPJ in SCII.

microRNAs:

  • Short non-coding RNAs called miRNAs (microRNAs) control post-transcriptional gene expression.
  • SCII (spinal cord ischemia-reperfusion damage) is a medical condition that can lead to paralysis and paraplegia, among other serious effects. The development of SCII is influenced by aberrant microRNAs expression. Different microRNAs expression results could be caused by variations in the experimenters, filtering circumstances, control choice, and sequencing platform.
  • The purpose of this study is to investigate the important differently expressed microRNAs (DE miRNAs) and the underlying molecular mechanism in SCII by methodically analyzing the available SCII microRNAs expression data. A thorough bioinformatics study of 23 representative rat SCII miRNA datasets from PubMed was carried out. On mi RDB, the target genes of important DE miRNAs were predicted.
  • Functional enrichment and transcription factor binding analyses using the DAVID and T Fact S databases. Nine were increased (miR-144-3p, miR-3568, miR-204, miR-30c, miR-34c-3p, miR-155-3p, miR-200b, miR-463, and miR-760-5p) and ten were downregulated (this study found 19 important DE miRNAs involved in SCII) (miR-28-5p, miR-21-5p, miR-702-3p, miR-291a-3p, miR-199a-3p, miR-352, miR-743b-3p, miR-125b-2-3p, miR-129-1-3p, and miR-136).Target genes of the increased DE miRNAs underwent KEGG enrichment analysis, which identified the pathways primarily involved as being the cGMP-PKG and cAMP signaling pathways. According to KEGG enrichment analysis of the downregulated DE miRNAs' target genes, the main signaling pathways involved were the Chemokine and MAPK signaling pathways. The target genes of the increased DE miRNAs were clearly enriched in biological processes such brain development and the positive control of transcription from RNA polymerase II promoter, according to GO enrichment analysis.
  • The majority of the target genes of the downregulated DE miRNAs were enriched in biological processes such intracellular signal transmission and the inhibition of cell growth. The transcription factor study revealed that the four transcription factors, SP1, GLI1, GLI2, and FOXO3, had significant regulatory effects on the main DE miRNAs' target genes. MiR-3568 stood out among the elevated DE miRNAs as being particularly intriguing. SCII results in significant neurological deficiencies in the lower extremities, but miR-3568 anti-miRNA oligonucleotides (AMOs) enhance neurological performance. When compared to the sham group, cleaved caspase-3 and Bax were significantly elevated in SCII, however the overexpression was inhibited by miR-3568 AMO. In contrast to cleaved caspase-3, Bcl-2 expression levels exhibited a pattern. Following the attenuation of this increase by SCII and microRNAs-3568 AMO, the expression of GATA6, GATA4, and RBPJ reduced.

Learn more about microRNAs here brainly.com/question/14979443

#SPJ4

8 0
2 years ago
If we were to compare the cells in the plant leaves to the cells in the plant roots, we would expect the leaf cells to contain m
Gre4nikov [31]

The  correct answer is Chloroplast

The primary function of a leaf is photosynthesis and the chloroplast is the main site for photosynthesis. The rate of photosynthesis is much more in leaves as compared to that of roots. Chloroplast is the place where light and dark reactions takes place. Chloroplast contains a pigment called chlorophyll that absorbs light from the sun for the process of photosynthesis.

4 0
3 years ago
Read 2 more answers
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