Which one of the following organelles would be especially abundant in the pancreatic cells that produce digestive enzymes?
A. rough endoplasmic reticulum
B. smooth endoplasmic reticulum
C. lysosomes
D. microfilaments
E. mitochondria
Apparently the answer is not lysosomes, so then what is it? Please also explain. Thank you.
Probably rough endoplasmic reticulum. An enzyme is a protein. You call it rough because it is studded with ribosome units. Ribosomes make proteins. More protein "factories" equals more enzyme to be released
Note: Lysosome's are were you send proteins to be destroyed
Well, let's take a look at the choices here.
A. The rough endoplasmic reticulum is involved in protein synthesis and is abundant in cells that produce enzymes, but maybe not specifically in pancreatic cells that produce digestive enzymes.
B. The smooth endoplasmic reticulum is involved in lipid metabolism and detoxification, so it's not directly related to enzyme production.
C. Lysosomes are responsible for breaking down waste materials, so they are not likely to be abundant in cells that produce digestive enzymes because they have different functions.
D. Microfilaments are important for cellular movement and maintaining cell shape, so they're not directly related to enzyme production either.
E. Ah, the mitochondria! These are widely known as the powerhouses of the cell, responsible for generating energy. In pancreatic cells that produce digestive enzymes, a lot of energy is needed for enzyme synthesis and secretion. Therefore, an abundance of mitochondria would be beneficial for these cells.
So, the answer is E. Mitochondria! They provide the energy needed for the production and secretion of digestive enzymes in pancreatic cells.
The correct answer is A. rough endoplasmic reticulum.
The rough endoplasmic reticulum (RER) is an organelle involved in protein synthesis and modification. It appears rough due to the presence of ribosomes on its surface. Pancreatic cells that produce digestive enzymes, called exocrine cells, produce a large amount of proteins. These proteins, including digestive enzymes, are synthesized and modified in the rough endoplasmic reticulum before being transported to other organelles or secreted outside the cell.
Smooth endoplasmic reticulum (SER) is involved in lipid metabolism and detoxification but not specifically related to protein synthesis. Lysosomes are responsible for cellular digestion and waste removal, not protein synthesis. Microfilaments are involved in cellular movement and structure. Mitochondria are responsible for energy production in the form of ATP.
The correct answer is A. rough endoplasmic reticulum.
To arrive at this answer, let's first understand the function of the pancreatic cells that produce digestive enzymes. These cells are responsible for synthesizing and secreting digestive enzymes that aid in the digestion of food in the gastrointestinal tract.
The rough endoplasmic reticulum (ER) is a network of membrane-bound sacs originating from the nuclear envelope. It is studded with ribosomes on its surface, hence the term "rough." The ER plays an essential role in protein synthesis and processing.
Digestive enzymes are proteins, so to produce them, pancreatic cells need a significant amount of rough ER. The ribosomes attached to the rough ER synthesize the enzymes, and the rough ER helps fold and modify these newly formed proteins into their active conformation.
Smooth endoplasmic reticulum (B) is involved in functions like lipid metabolism, detoxification, and the regulation of calcium ion levels. While present in pancreatic cells, it is not directly related to the production of digestive enzymes.
Lysosomes (C) are membrane-bound organelles responsible for breaking down waste materials, cellular debris, and harmful substances. Although important for cellular function, they are not directly involved in the production of digestive enzymes in pancreatic cells.
Microfilaments (D) are a component of the cell's cytoskeleton and are involved in cell shape, movement, and support rather than enzyme production.
Mitochondria (E) are the powerhouse of the cell, responsible for generating ATP (adenosine triphosphate), which provides energy for cellular processes. Although vital for cellular energy production, mitochondria are not directly related to the production of digestive enzymes in pancreatic cells.
In summary, the rough endoplasmic reticulum (A) is especially abundant in pancreatic cells that produce digestive enzymes because it is involved in protein synthesis, folding, and modification – all of which are critical for the production of these enzymes.