All cells have some common functions, but individual cells vary widely in size and shape, reflecting their unique functions in the body
3. The answer is false, because protons are positive and electrons are negative. If there are more protons than electrons, then the atom would be positively charged.
The answer is false.
4. The answer is true, because if the number of protons and electrons are the same, then the charges would cancel out, leaving the atom negative.
The answer is true.
I hope this helps. :)
Answer:
The replacement of a base at a codon, as occurs when the GGA codon is changed to CGA, causes a change in the amino acid glycine to arginine.
Explanation:
Nitrogen base changes in a codon usually result from base changes in the DNA before transcription into mRNA,called point gene mutations.
In the case presented, the substitution of the guanine base by cytosine in the GGA codon--resulting in a CGA codon--generates a change in the coding amino acid resulting in arginine instead of glycine.
The change of an amino acid in a peptide or protein can mean an alteration in the structure or function of these molecules.
Because an amino acid can be encoded by several codons, changes of a nitrogen base at a codon sometimes do not involve changes in the amino acid sequence of a protein.