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Naily [24]
2 years ago
11

Identify the role of all molecular constituents present in a functional polyribosome. Drag the terms on the left to the appropri

ate blanks on the right to complete the sentences.
Chemistry
1 answer:
nikitadnepr [17]2 years ago
7 0

A polyribosome (or polysome) is a complex of one mRNA molecule and two or more ribosomes that  form a polypeptide chain during active translation. Since multiple ribosomes can translate  mRNA simultaneously, many polypeptides can be produced simultaneously from a single mRNA.

<h3>Role of all molecular constituents present in a functional polyribosome ;</h3>

1. mRNA: contains the codon

2. tRNA : contains the anticodon for the mRNA

3. Ribosome (large & small subunits): facilitates interaction between mRNA and tRNA

4. Amino acids:

5. Initation Factors: proteins important in the interaction/binding of the small subunit, mRNA, TRNAmet, and the Shine Dalgarno sequence

7. Elongation Factors: bring charged tRNA's to the A site of the ribosome

8. GTP: provides energy

Ribosome recruitment in eukaryotes occurs when the eukaryotic initiation factor e1F4F and poly(A) binding protein (PABP) recognize 5′-capped mRNAs and recruit the 43S ribosome complex to this site. increase. In addition, the Kozak consensus sequence ACCAUGG is also required for translation initiation. Therefore, at first glance, it seems unlikely that  overlapping sequences will be translated.

To know more about the Ribosome, please click here : brainly.com/question/8773679

#SPJ4

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Beta particles will bend toward the South Pole of the magnet.

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3 years ago
A red blood cell is placed into each of the following solutions. Indicate whether crenation, hemolysis, or neither will occur. S
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Answer:

Solution A: crenation

Solution B: hemolysis

Solution C: hemolysis

Solution D: crenation

Solution E: crenation

Explanation:

Hemolysis is the rupturing of red blood cells, which results in the release of hemoglobin (from within the red blood cells) into the plasma. If a red blood cell is placed in a hypotonic solution, water will flow into the cell, the cell will swell and hemolysis will.

Crenation: when a red blood cell is placed in a <em>hypertonic solution (</em>such as highly saline solution), the red blood cell will lose water(osmosis) and will shrink in size. The red blood cell has undergone crenation.

In order for a red blood cell to prevent from undergoing hemolysis or crenation, the cell must be placed in an<em> isotonic solution, </em>i.e either in <u>0.9% (m/v) NaCl solution</u> or <u>5% glucose solution</u>

  • Solution B and Solution C are hypotonic solution, thus red blood cell has undergone hemolysis.
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8 0
3 years ago
If an atom has sp3d2 hybridization in a molecule:
never [62]

Answer:

a. the maximum number of σ bonds that the atom can form is 4

b. the maximum number of p-p bonds that the atom can form is 2

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Hybridization is the mixing of at least two nonequivalent orbitals, in this case, we have the mixing of one <em>s, 3 p </em> and <em> 2 d </em> orbitals. In hybridization the number of hybrid orbitals generated  is equal to the number of pure atomic orbital, so we have 6 hybrid orbital.

The shape of this hybrid orbital is octahedral (look the attached image) , it has 4 orbital located in the plane and 2 orbital perpendicular to it.

This shape allows the formation of maximum 4 σ bond, because σ bonds are formed by orbitals overlapping end to end.

And maximum 2 p-p bonds, because p-p bonds are formed by sideways overlapping orbitals. The atom can form one with each one of the orbitals located perpendicular to the plane.

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Why can mass spectrometry be used to identify compounds?
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Produces charged particles (ions) from the chemical substances that are to be analyzed
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