Post-translational modifications of proteins makes them functional and include:
- methylation
- addition of disulphide bridges
- folding
- phosphorylation
<h3>What is post-translational modification of proteins?</h3>
Post-translational modifications of proteins refers to modifications that are made on new synthesized proteins after synthesis at the ribosomes.
Post-translational modifications of proteins are important as they help to convert the proteins into their active forms.
Some post-translational modifications of proteins include:
- methylation
- addition of disulphide bridges
- folding
- phosphorylation
Therefore, post-translational modifications of proteins are required to make proteins functional.
Learn more about proteins at:https: //brainly.com/question/884935
Answer:
Microtubules
Explanation:
These filament-like structures are a major component of the cytoskeleton of the cell and help is maintain asymmetrical cell shape. They are composed of tubulin molecules arranged to form a 'hollow straw' attached to the cell membrane end to end . The contraction and lengthening of these microtubules are controlled by the addition of removal these of tubulin molecules to vary its length.
Sperm cells inside the pollen grain travel down the pollen tube and into the ovary which contains the ovules. Fertilization occurs when one of the sperm cells fuses with the egg inside of an ovule
The answer is the first one ( it has more protons than electrons)
