Question

4. Where is the ribosome located in the cell? What is the essential role of the ribosome

in gene expression?
5. In which crucial step of gene expression does the ribosome play a major role:
transcription or translation?
6. How does the ribosome differ in eukaryotes and prokaryotes?
7. Why is transfer RNA, or tRNA, necessary for protein synthesis?
8. What is the role of ribosomal RNA in the ribosome?
9. What happens if there are no ribosomes present in the cell, or if the ribosomes do
not function properly?

Answer 1

1. transcribed

2. cytoplasm

3. tRNA

4. In the cytoplasm and the endoplasmic reticulum, ribosomes are tiny, glanular structures.

5. Translation.

6. Compared to prokaryotic ribosomes, eukaryotic ribosomes are ten times larger.

7. It is tRNA that links the codons of the mRNA to the amino acids that will be added to the polypeptide chain. During polypeptide synthesis, tRNA molecules that are complementary to mRNA codons enter the ribosome and transfer their amino acids to the growing chain of amino acids.

8. They bind tRNAs and a variety of accessory molecules that are necessary for protein synthesis. Ribosomal RNA is an integral part of the ribosome and catalyzes the synthesis of amino acids into protein chains.

9. Cells cannot accomplish their necessary functions without ribosomes, and an organism will die if there are no ribosomes.

Step-by-step explanation:

Answer 2

4. Ribosomes are tiny glanular structures that are either floating freely in cytoplasm or are bound to endoplasmic reticulum.

5. Translation.

6. Eukaryotic ribosomes are ten times larger than prokaryotic ones.

7. Not sure about this.But they are necessary for protein synthesis as they assemble amino acids into protein chains.

8. Ribosomal RNA is part of ribosome.These complex structures catalyze the assembly of amino acids into protein chains.They also bind tRNAs and various accessory molecules necessary for proteins.

9. When a ribosome is not working,it disassembles into two smaller units.

Step-by-step explanation: