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dalvyx [7]
3 years ago
6

On a strand of the mRNA the bases are read in groups of three. What is the correct term for a group of three bases on the strand

of mRNA?
Biology
2 answers:
mart [117]3 years ago
5 0
It is a codon. A codon codes for Amino acids and an Anti-codon Codes for the breakdown of Amino Acids.
densk [106]3 years ago
3 0

Answer:

The correct answer would be codon.

Codon refers to the sequence of three consecutive nucleotides (DNA or RNA) which codes for a specific amino acid.

For example, AUG codes for methionine, CCA codes for proline, GUU codes for valine, UGA is a stop codon et cetera.

The nucleotide sequence of the DNA is transcribed into the codon sequence of the mRNA.

The codon sequence of the mRNA codes for the amino acid sequence of the polypeptide chain.

The codon is deciphered with the help of the anti-codon site of the tRNA.

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Sodium ions, oxygen (O2), and glucose pass directly through lipid bilayers at dramatically different rates. Which of the followi
Elodia [21]

Answer:

The correct order, from fastest to slowest, for the passage of molecules and ions through the cell membrane is oxygen, sodium ions, glucose (option D).

Explanation:

The plasma membrane is a lipid bilayer, with glycoproteins and membrane proteins, which constitutes a semi-permeable barrier to the passage of substances into and out of the cell.

The speed with which a substance can pass through the membrane depends on its chemical properties -hydrophilic substances pass through with greater difficulty than lipophilic ones- requiring in some cases specialized transport mechanisms. The different rates with which a substance passes depends on this.

  • <em>Oxygen (O₂) </em><em>passes through simple diffusion, depending on a concentration gradient. It's the molecule that passes through the membrane the fastest. </em>
  • <em>In second place, there would be the </em><em>Na⁺ ions</em><em> -charged atoms- that cross the membrane by facilitated diffusion, through specific ionic channels. </em>
  • <em>The </em><em>glucose</em><em> molecule, being larger, requires the use of transport proteins, being its passage through the membrane slower with respect to oxygen or sodium.</em>

Undoubtedly, molecular weight and affinity for the plasma membrane are determining factors for the passage of molecules through the lipid bilayer.

Learn more:

Simple diffusion and active transport  brainly.com/question/6420224

4 0
3 years ago
When performing gel electrophoresis, the strs are separated by _____, with the ______ ones moving the farthest?
Hoochie [10]
<span>size, small Gel electorophoresis moves DNA through a matrix that contains molecules which prevent large ones from moving but the smaller ones are able to pass through. This allows molecules to be separated by size.</span>
8 0
2 years ago
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