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Chapter 1: Problem 35

Which of the following organelles possess their own DNA and ribosomes? (a) Mitochondria and plastids (b) Plastids and endoplasmic reticulum (c) Mitochondria and Golgi complex (d) Golgi complex and endoplasmic reticulum

Short Answer

Expert verified
Answer: (a) Mitochondria and plastids

Step by step solution

01

Understanding the organelles

To solve this exercise, let's briefly describe each organelle: - Mitochondria: These are the powerhouse of the cells, responsible for creating energy through cellular respiration. They are found in the cytoplasm of eukaryotic cells. - Plastids: These are a group of organelles found in plant cells and some algae. They are responsible for various functions, such as photosynthesis and storage of pigments, starch, and lipids. - Endoplasmic reticulum (ER): The ER is a network of tubules and sacs within eukaryotic cells. It is involved in protein synthesis and lipid metabolism. - Golgi complex: This organelle is responsible for modifying, sorting, and packaging proteins and lipids for transport within the cell.
02

Identifying organelles with their own DNA and ribosomes

Now let's determine which organelles have their own DNA and ribosomes: - Mitochondria: They possess their own DNA and ribosomes. Mitochondrial DNA is inherited from the mother and is essential for the proper function of mitochondria. - Plastids: Plastids, such as chloroplasts, also have their own DNA and ribosomes, which are needed for their photosynthetic function in plant cells. - Endoplasmic reticulum: The ER does not have its own DNA and ribosomes but is involved in protein synthesis and lipid metabolism with the help of ribosomes attached to its surface. - Golgi complex: The Golgi complex does not have its own DNA and ribosomes.
03

Selecting the correct answer

Based on the information above, the organelles that possess their own DNA and ribosomes are mitochondria and plastids. Therefore, the correct answer is: (a) Mitochondria and plastids

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Most popular questions from this chapter

Bacterial cell wall is made up of (a) Cellulose (b) Peptidoglycan (c) Hemicellulose (d) Pectin

Which of the following is the correct statement? (a) Endoplasmic reticulum is the site of protein manufacture in bacteria.(b) The membrane-bound inclusion bodies help in the storage of nutrients in prokaryotes. (c) The living material inside the cell is called protoplasm. (d) Mesosome is the cell wall extension that helps in photosynthesis.

Bacterial cell wall is made up of (a) Cellulose (b) Peptidoglycan (c) Hemicellulose (d) Pectin

Plant cell wall is made up of

Select the wrong statement. (a) Plant cells are surrounded by a living, rigid outer layer called cell wall. (b) Plant cell wall is made up of cellulose. (c) Bacterial cell wall is made up of peptidoglycan. (d) Both prokaryotic and eukaryotic plasma membranes are composed of lipids and proteins.
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