Microbodies found to be present in plant and animal cells contain
enzymes
Microbodies in Plant and Animal Cells Explained
Microbodies are small, membrane-bound organelles found within the cytoplasm of eukaryotic cells, including both plant cells and animal cells. These tiny structures play crucial roles in various metabolic processes.
Key Contents of Microbodies
The primary and most significant content found within microbodies are specific enzymes. These enzymes are responsible for carrying out essential biochemical reactions.
- Peroxisomes: These are a common type of microbody. They contain vital enzymes like catalase and oxidases. Catalase helps break down hydrogen peroxide (a toxic byproduct of metabolic processes) into water and oxygen. Oxidases help in breaking down fatty acids and amino acids.
- Glyoxysomes: Found primarily in plant cells (especially in seeds during germination), these microbodies also contain enzymes involved in the glyoxylate cycle. This cycle allows plants to convert stored fatty acids into carbohydrates, providing energy for growth.
Analyzing the Options
Let's examine why enzymes are the correct answer and why the other options are less accurate:
- Broken down membranes: Microbodies are characterized by a single, intact membrane, not broken-down ones. The membrane is crucial for containing the enzymes and isolating their reactions from the rest of the cell.
- Enzymes: This is the defining content of microbodies. The specific enzymes they house dictate their metabolic functions, such as detoxification, lipid metabolism, and photorespiration (in plants).
- Acidic fluids: While lysosomes contain hydrolytic enzymes and maintain an acidic internal pH, the term "microbodies" typically refers to peroxisomes and glyoxysomes, which do not necessarily contain "acidic fluids" as their primary characteristic content. Their defining feature is the presence of specific oxidative and other metabolic enzymes.
- Waste metabolites: Microbodies are involved in processing various substances, including metabolic intermediates, but they don't primarily contain waste metabolites. Instead, they contain the enzymes that act upon these metabolites, often detoxifying them or converting them into less harmful or useful substances.
Conclusion on Microbody Contents
In summary, the fundamental components housed within microbodies in both plant cells and animal cells are specialized enzymes that drive critical metabolic pathways.
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- Which of the following category of biomolecules does Starch belong to ?
Which of the following statements regarding the similarity in glycogen in animal cell and starch in plant cell is/are NOT correct?
1. Both are mixtures of amylose and amylopectin.
2. Starch and glycogen, both represent the storage form of carbohydrate in liver cells.
Select the answer using the code given below:
Important Questions from Biomolecules
The chemical name of Vitamin D 3is:
Which of the following food comes under complex carbohydrate?
I. Potatoes
II. Sweets
III. Pasta
IV. Wheat
Following are the pKa's of the ionizable groups in lysine
pKa 1 = 2.16 (α - carboxylic group)
pKa 2 = 9.06 (α - amino group)
pKa 3 = 10.54 (ε - amino group)
Which one of the following options represents the pl of lysine?
How many hydrogen bonds involving the backbone CO and NH can be observed in an α‐helix consisting of 15 amino acid residues?
In eukaryotic cells, covalently attached lipids help to anchor some water soluble proteins to the plasma membrane. One group of cytosolic proteins are anchored to the cytosolic face of membrane by a fatty acyl group (e.g. myristate or palmitate). These groups are generally covalently attached to which amino acids present at the N‐terminus of the polypeptide chain?
