Table of Contents
- 1 What are the small particles in the cell on which proteins are assembled?
- 2 What are small particles of RNA and protein found throughout the cytoplasm?
- 3 What is the process of assembling proteins from RNA?
- 4 What is the cytosol function?
- 5 Which of the following are small granules of RNA and protein that provide a site for protein?
- 6 What is the small particles of protein?
- 7 What structure makes proteins coded in?
- 8 What structure makes proteins?
What are the small particles in the cell on which proteins are assembled?
Chapter 7: Cell Structure and Function
| A | B |
|---|---|
| ribosome | small particles made of RNA and protein |
| endoplasmic reticulum | the organelle in which components of the cell membrane are assembled and some proteins are modified |
| Golgi apparatus | a stack of membranes in the cell in which enzymes attach carbohydrates and lipids to proteins |
What are small particles of RNA and protein found throughout the cytoplasm?
Chloroplasts Mitochondria Ribosomes are small particles of RNA and protein found throughout the cytoplasm. They are involved in the synthesis of proteins.
What is the process of assembling proteins from RNA?
The process of assembling a protein from mRNA is called translation, and occurs in the ribosome.
What structure makes proteins using coded instructions from DNA?
The nucleus
The nucleus contains nearly all the cell’s DNA and with it the coded instructions for making proteins and other important molecules.
Where proteins are made in the cells the dots?
Ribosomes
Ribosomes are the cellular structures responsible for protein synthesis. When viewed through an electron microscope, ribosomes appear either as clusters (polyribosomes) or single, tiny dots that float freely in the cytoplasm.
What is the cytosol function?
The cytosol has an important role in providing structural support for other organelles and in allowing transport of molecules across the cell.
Which of the following are small granules of RNA and protein that provide a site for protein?
a&ph test 2
| Question | Answer |
|---|---|
| Small granules of RNA & proteins that provide a site for protein synthesis | Ribosomes |
| Membrane-bound organ that contains enzymes and oxygen to be used to oxidize organic material | Peroxisomes |
| Membrane-bound organelle that is the site of protein and lipid synthesis | Endoplasmic Reticulum |
What is the small particles of protein?
Proteins are made up of hundreds or thousands of smaller units called amino acids, which are attached to one another in long chains. There are 20 different types of amino acids that can be combined to make a protein.
What is the process of making proteins called?
Protein synthesis is the process in which cells make proteins. It occurs in two stages: transcription and translation. Transcription is the transfer of genetic instructions in DNA to mRNA in the nucleus. Translation occurs at the ribosome, which consists of rRNA and proteins.
During which set of events are amino acids assembled into protein?
During translation, ribosomal subunits assemble together like a sandwich on the strand of mRNA, where they proceed to attract tRNA molecules tethered to amino acids (circles). A long chain of amino acids emerges as the ribosome decodes the mRNA sequence into a polypeptide, or a new protein.
What structure makes proteins coded in?
The nucleus contains coded instructions for making proteins.
What structure makes proteins?
Ribosomes produce proteins and are made of two components—RNA and protein. Ribosomes are produced in the nucleolus, a structure located inside the nucleus. Some ribosomes float freely in the cytoplasm. They produce proteins that will be used by other cells.