So if we are speaking of cell organelles that do not contain DNA, then the correct answer is ER (Endoplasmic Reticulum). Answer: Lysosomes and Vacuoles do not contain DNA. Lysosomes are bounded membrane organelles which are found in the cells of animals and plants.

Hereof, Where are ribosomes produced in a eukaryotic cell?

Biogenesis. In bacterial cells, ribosomes are synthesized in the cytoplasm through the transcription of multiple ribosome gene operons. In eukaryotes, the process takes place both in the cell cytoplasm and in the nucleolus, which is a region within the cell nucleus.

Which organelle is responsible for the process of photosynthesis?


27 Related Questions Answers Found


What are the two types of ribosomes?

There are two types of ribosomes, free and fixed (also known as membrane bound). They are identical in structure but differ in locations within the cell. Free ribosomes are located in the cytosol and are able to move throughout the cell, whereas fixed ribosomes are attached to the rER.

Which organelle looks like a stack of pancakes?

Golgi apparatus

Do all cells need ribosomes?

All cells need proteins to live. Thus, all cells have ribosomes. While a structure such as a nucleus is only found in eukaryotes, every cell needs ribosomes to manufacture proteins. Since there are no membrane-bound organelles in prokaryotes, the ribosomes float free in the cytosol.

What is a Centriole in biology?

a small, cylindrical cell organelle, seen near the nucleus in the cytoplasm of most eukaryotic cells, that divides in perpendicular fashion during mitosis, the new pair of centrioles moving ahead of the spindle to opposite poles of the cell as the cell divides: identical in internal structure to a basal body.

Which organelle contains enzymes that modify proteins and lipids?

Lysosomes contain enzymes that break down the macromolecules and foreign invaders. Lysosomes are composed of lipids and proteins, with a single membrane covering the internal enzymes to prevent the lysosome from digesting the cell itself.

What organelle makes proteins?


What is the outer boundary of the cell?

Membrane. Membrane, in biology, the thin layer that forms the outer boundary of a living cell or of an internal cell compartment. The outer boundary is the plasma membrane, and the compartments enclosed by internal membranes are called organelles.

Which organelle forms a membranous system of channels?

Which membranous organelle is responsible for protein synthesis?


What organelle receives proteins from the rough endoplasmic reticulum?

Golgi apparatus

What organelle packages materials for export?

Vocabulary: Cell Structures
Mitochondria organelle that transfers energy from organic compounds to ATP
ribosome organizes the synthesis of proteins
endoplasmic reticulum prepares proteins for export, the transportation system of the cell.
golgi apparatus processes and packages substances produced by the cell.

What organelle is not found in the cytoplasm?

All of the organelles in eukaryotic cells, such as the nucleus, endoplasmic reticulum, and mitochondria, are located in the cytoplasm. The portion of the cytoplasm that is not contained in the organelles is called the cytosol.

What synthesizes proteins for export from the cell?

The attached ribosomes make proteins that will be used inside the cell and proteins made for export out of the cell. There are also ribosomes attached to the nuclear envelope. Those ribosomes synthesize proteins that are released into the perinuclear space.

What organelle produces ATP?


What are proteins made of?

Cytoplasm is a clear, thick liquid that fills the insides of cells. It is located inside the cell membrane and the organelles, such as the nucleus,

What are proteins made of?

The cytoplasm was discovered in 1835 by three biologists, George E Palade, Albert Claude and Christian de Duve. It was Robert Hooke who discovered the cell in 1831 and laid down the fundamentals for the study of the cell. The cytoplasm is a dense, jelly-like substance found in every cell.

What organelle do all cells have?

All cells have a plasma membrane, ribosomes, cytoplasm, and DNA. Prokaryotic cells lack a nucleus and membrane-bound structures. Eukaryotic cells have a nucleus and membrane-bound structures called organelles.

Where are proteins found in the cell?

Ribosomes are found in many places around a eukaryotic cell. You might find them floating in the cytosol. Those floating ribosomes make proteins that will be used inside of the cell. Other ribosomes are found on the endoplasmic reticulum.

Is the cytoplasm an organelle?

Cytoplasm is not an organelle. This is simply a generic term that describes everything within the plasma membrane and outside the nucleus. We typically think of organelles as being within cells.

What organelle produces ATP?


What is the cytoplasm for?

6 Cell Organelles | Britannica.

Where are proteins made?

Proteins are synthesized on ribosomes that read the mRNA and decode it to stringing together a defined series of amino acids. In animals, you find the ribosomes in the cytoplasm, although they can stick to the cytoplasmic surface of the endoplasmic reticulum if they are producing membrane-bound or export proteins.

What makes ribosomes in a cell?

How do you make a ribosome? Some chromosomes have sections of DNA that encode ribosomal RNA, a type of structural RNA that combines with proteins to make the ribosome. In the nucleolus, new ribosomal RNA combines with proteins to form the subunits of the ribosome.

What makes ribosomes in a cell?

Proteins are made up of smaller building blocks called amino acids, joined together in chains. There are 20 different amino acids. Some proteins are just a few amino acids long, while others are made up of several thousands. These chains of amino acids fold up in complex ways, giving each protein a unique 3D shape.

How do you make proteins?

(Amino acids are the building blocks of proteins.) A type of RNA called transfer RNA (tRNA) assembles the protein, one amino acid at a time. Protein assembly continues until the ribosome encounters a “stop” codon (a sequence of three bases that does not code for an amino acid).

What is the site of protein synthesis?

Protein is assembled inside cells by an organelle called a ribosome. Ribosomes are found in every major cell type and are the site of protein synthesis. However, DNA itself cannot leave the cell nucleus. This might not be such a problem if ribosomes were able to enter the cell nucleus.

What does the cytoplasm contain?

Cytoplasm consists of all of the contents outside of the nucleus and enclosed within the cell membrane of a cell. It is clear in color and has a gel-like appearance. Cytoplasm is composed mainly of water but also contains enzymes, salts, organelles, and various organic molecules.

What is the cytoplasm composed of?

Cytoplasm is a thick solution that fills each cell and is enclosed by the cell membrane. It is mainly composed of water, salts, and proteins. In eukaryotic cells, the cytoplasm includes all of the material inside the cell and outside of the nucleus.

How many organelles are in a cell?

Protein is assembled inside cells by an organelle called a ribosome. Ribosomes are found in every major cell type and are the site of protein synthesis. However, DNA itself cannot leave the cell nucleus. This might not be such a problem if ribosomes were able to enter the cell nucleus.

Do all cells have cytoplasm?

All cells have a plasma membrane, ribosomes, cytoplasm, and DNA. Ribosomes are the non-membrane bound organelles where proteins are made, a process called protein synthesis. The cytoplasm is all the contents of the cell inside the cell membrane, not including the nucleus.

What are the two storage organelles?

6 Cell Organelles | Britannica.