Which structure is the site of synthesis of proteins that may be exported from the cell?

Which structure is the site of synthesis of proteins that may be exported from the cell?

A) Rough endoplasmic reticulum Rough ER is the eukaryotic cell that are interconnected cells which are the primary site of synthesis of proteins.

How is a protein synthesized and exported from a cell?

Proteins that are destined to be exported from the cell or are going to be inserted into the cell’s membrane enter the endoplasmic reticulum (ER) as they are synthesized by ribosomes that bind to the surface of the ER and feed the new proteins into the ER through small pores.

Which structure is the site of the synthesis of proteins that may be exported from the cell cytoplasmic ribosomes attached to ER Plasmodesmata ER?

Endoplasmic reticulum (ER)- It is a network of membranes throughout the cytoplasm of the cell. There are two types of ER. When ribosomes are attached it is called rough ER and smooth ER when there are no ribosomes attached. The rough endoplasmic reticulum is where most protein synthesis occurs in the cell.

Which organelle is the primary site of ATP synthesis?

mitochondria
Most eukaryotic cells contain many mitochondria, which occupy up to 25 percent of the volume of the cytoplasm. These complex organelles, the main sites of ATP production during aerobic metabolism, are among the largest organelles, generally exceeded in size only by the nucleus, vacuoles, and chloroplasts.

Which of these structures is unique to plant cells quizlet?

Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, which are not found within animal cells. – The cell wall is a rigid covering that protects the cell, provides structural support, and gives shape to the cell.

How are proteins synthesized in the cell?

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. After a polypeptide chain is synthesized, it may undergo additional processing to form the finished protein.

Which structure is the site of the synthesis of proteins destined for export from the cell group of answer choices?

Proteins are assembled at organelles called ribosomes. When proteins are destined to be part of the cell membrane or exported from the cell, the ribosomes assembling them attach to the endoplasmic reticulum, giving it a rough appearance.

Which of the following is the primary source of ATP production?

Mitochondria are the main site for ATP synthesis in mammals, although some ATP is also synthesized in the cytoplasm. Lipids are broken down into fatty acids, proteins into amino acids, and carbohydrates into glucose.

How is ATP produced in a cell?

ATP is able to power cellular processes by transferring a phosphate group to another molecule (a process called phosphorylation). Most of the ATP in cells is produced by the enzyme ATP synthase, which converts ADP and phosphate to ATP.

Which features are unique to plant cells quizlet?

Terms in this set (15)

  • Cell wall.
  • Plastid.
  • Thylakoids.
  • Chlorophyll.
  • Central vacuole.
  • Organelle found in plant cell and not animal cell.
  • The end products of photosynthesus include.
  • A cell that contains a cell wall, chloroplats, and a central vacuole is a.

Which is the site of synthesis of proteins that may be exported from the cell?

29) Which structure is the site of the synthesis of proteins that may be exported from the cell? 30) In animal cells, hydrolytic enzymes are packaged to prevent general destruction of cellular components. Which of the following organelles functions in this compartmentalization?

Where does rough ER protein synthesis take place?

Rough ER. Protein synthesis takes place at ribosomes that occur in the cell cytoplasm. Some of these are free ribosomes that are scattered in the cytoplasm, while others are bound to the rough endoplasmic reticulum (RER).

Where does a protein go after it leaves the ribosome?

For proteins destined for export out of the cell, after a very short sequence of the amino acid chain has grown from the ribosome, the ribosome, bound up with its mRNA and amino acid chain, will migrate to the rough endoplasmic reticulum (RER) and dock on its outside face, thus joining many other ribosomes that have done the same thing.

Where are proteins produced in the plasma membrane?

Many of the integral proteins that occur in the plasma membrane of cells are actually partly produced in the cisternae of the rough ER. This is an organelle that is closely associated with the RER in the cell. It also contains a varying number of sacs or cisternae.