Answer:
both A and B
Explanation:
Together, the number of protons and the number of neutrons determine an element's mass number.
The substance that is coded for by a length of DNA is base. The correct option is A.
<h3>What is a base?</h3>
Nucleobases, also known as nitrogenous bases or simply bases, are nitrogen-containing biological compounds that form nucleosides, which are then components of nucleotides, all of which are the basic building blocks of nucleic acids.
The complete question is attached.
The substance that is coded for by a length of DNA is base.
Thus, the correct option is A.
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Answer;
Rough endoplasmic reticulum
Explanation;
Rough endoplasmic reticulum is among the organelles that are found in eukaryotic cells. The reason as to why it is called rough is because it has ribosomes attached to its surface.
Its main function is to produce proteins. It is made up of cisternae, tubules and vesicles. The cisternae consists of flattened membrane disks, which are involved in the modification of proteins.
Once enough proteins have been synthesized, they are transferred from the Rough endoplasmic reticulum to the Golgi apparatus via membrane-bound vesicles.
I didn’t get to see this answer but it was very easy for me