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cestrela7 [59]
3 years ago
5

Which of the following best describes a population?

Biology
1 answer:
Fudgin [204]3 years ago
5 0

Answer:

Explanation:

A number of things/people that populate on place

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Place all eight of these steps of the insulin signaling pathway in the correct order. The abbreviation PIP 2 is used for phospha
DedPeter [7]

Answer:

The correct insulin pathway is described as under:

2. Binding of insulin to the alpha subunit of the insulin receptor

8. Activation of insulin receptor tyrosine kinase

3. Phosphorylation of IRS proteins

6. Phosphorylation of phosphinositide 3-kinase (PI-3K)

4. Conversion of PIP2 to PIP3

7. Activation of PIP3-dependent protein kinase B (PDK1)

5. Glut4 receptors transported to the cell membrane

Explanation:

The insulin signaling pathway is described as under:

RTK (receptor tyrosine kinases) which is a receptor for insulin is an extracellular receptor but in contrast to other cell surface receptors it is catalytic in nature. In the absence of insulin (ligand), it is monomeric but as soon as it gets activated (activation occurs upon ligand binding), it undergo dimerization. It leads to auto-phosphorylation in it's tyrosine residue which subsequently leads to phosphorylation of tyrosine residue of other receptors. Such hyper-phosphorylated receptor have high affinity with enzyme/molecule like IRS protein which have SH2 domain . IRS down stream activates phosphinositide 3-kinase (PI-3K). This enzyme converts component of animal cell membrane PIP2 into PIP3. PIP3 also remains membrane bound but it has the potential to phosphorylate another enzyme named as PIP3-dependent protein kinase B (PDK1). Further, PDK1 leads to the activation of Akt or PK-B. Akt is a serine-threonine kinase which ultimately leads to the recruitment of Glut4 receptors on cell membrane for uptake of more and more glucose into the cell.

Note: Apart from this Akt also phosphorylates another protein named as FOXO which ultimately causes cell growth, Akt can also phosphorylate BAD protein so as to restrict cell apoptosis or we can say it leads to cell survival, Akt also leads to translation in a cell with the help of mTOR raptor etc.  

5 0
3 years ago
Autotroph or Heterotroph? Which Kingdom?
Murljashka [212]
I know it’s a fungus (I think it’s honey fungus) but it’s heterotrophic because it doesn’t make its own food
5 0
2 years ago
You have isolated a gram-positive rod. What should you do next? A) Gram stain B) Lactose fermentation C) Endospore stain D) Flag
aleksklad [387]
Gram stain is correct answer
4 0
3 years ago
Which of the following vectors holds the largest pieces of DNA?
wolverine [178]

Answer:

c. YACs

Explanation:

YACs, the Yeast artificial chromosomes are the high capacity vectors designed to carry the eukaryotic genes and carry the insert of 200-2000 kb.

YACs carry origin of replication from yeast, selectable markers and sequences derived from telomeres and centromere to maintain the stability of the insert during cell division.

The insert size for plasmids, bacteriophage, PACs, and cosmids is about 0.1-10 kb, 5-25 kb, 100-300 kb, 35-45 kb respectively.

3 0
3 years ago
IF there were a membrane separating two solutions one with 80% solute and the other with 20% solute, in which direction through
aliya0001 [1]

Answer:

toward the 20% solute side of the membrane

Explanation:

that is the process of osmosis, in which the water moves in the direction that tends to equalize the solute concentrations on the two sides.

Basically it's to make it 50% 50%, so the water moves to the 20% solute side to raise the %

I hope it's clear enough.

6 0
3 years ago
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