Short answer biology questions. Describe characteristics of Phylum-Porifera. Describe characteristics of Phylum-Mollusca. Write a note on mitochondria. Write a note on Interphase a... Short answer biology questions. Describe characteristics of Phylum-Porifera. Describe characteristics of Phylum-Mollusca. Write a note on mitochondria. Write a note on Interphase and enlist phases involved in interphase. Explain Metaphase in cell cycle. Sketch and label Smooth Muscle. Sketch and label Ciliated epithelial tissue. Write functions of Fibroblast, Mast cell, Macrophage, and Adipocyte.
Understand the Problem
The image shows a list of short answer questions, likely for a biology or life sciences assignment. The questions cover topics ranging from the characteristics of different phyla (Porifera, Mollusca), cell structures and processes (mitochondria, interphase, metaphase), tissue types (smooth muscle, ciliated epithelial tissue), and the functions of specific cell types (fibroblast, mast cell, macrophage, adipocyte). These are straightforward recall and description questions.
Answer
Phylum Porifera are pore-bearing, simple multicellular animals. Phylum Mollusca are soft-bodied, triploblastic, bilaterally symmetrical, coelomate animals. Mitochondria generate ATP. Interphase prepares the cell for division (G1, S, G2 phases). Metaphase involves chromosome alignment at the cell center. Functions: Fibroblasts produce fibers, Mast cells release histamine, Macrophages engulf debris, and Adipocytes store fat.
Here are short answers to your biology questions:
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Phylum Porifera: These are the simplest multicellular animals, known as sponges. They are aquatic, mostly marine, and characterized by numerous pores (ostia) on their body surface.
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Phylum Mollusca: Molluscs have soft bodies, are triploblastic, bilaterally symmetrical, and coelomate. Examples include snails, octopuses, squids, oysters, and clams.
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Mitochondria: These are the powerhouses of the cell, generating most of the cell's supply of ATP (adenosine triphosphate), used as a source of chemical energy. They have a double membrane structure and contain their own DNA.
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Interphase: This is the phase where the cell prepares for division. It consists of:
- G1 phase (Gap 1): The cell grows and performs normal functions.
- S phase (Synthesis): DNA replication occurs.
- G2 phase (Gap 2): The cell continues to grow and prepares for mitosis.
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Metaphase: During metaphase, the chromosomes align along the metaphase plate (the center) of the cell. Each chromosome is attached to spindle fibers from opposite poles.
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Smooth Muscle: Sketch a spindle-shaped cell with a central nucleus and no striations.
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Ciliated Epithelial Tissue: Sketch a layer of cells with cilia (hair-like structures) on their apical surface.
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Functions:
- Fibroblast: Produces collagen and other fibers in connective tissue.
- Mast cell: Releases histamine and other substances during inflammation and allergic reactions.
- Macrophage: Engulfs and digests cellular debris, microbes, and foreign substances.
- Adipocyte: Stores fat (lipids).
Answer for screen readers
Here are short answers to your biology questions:
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Phylum Porifera: These are the simplest multicellular animals, known as sponges. They are aquatic, mostly marine, and characterized by numerous pores (ostia) on their body surface.
-
Phylum Mollusca: Molluscs have soft bodies, are triploblastic, bilaterally symmetrical, and coelomate. Examples include snails, octopuses, squids, oysters, and clams.
-
Mitochondria: These are the powerhouses of the cell, generating most of the cell's supply of ATP (adenosine triphosphate), used as a source of chemical energy. They have a double membrane structure and contain their own DNA.
-
Interphase: This is the phase where the cell prepares for division. It consists of:
- G1 phase (Gap 1): The cell grows and performs normal functions.
- S phase (Synthesis): DNA replication occurs.
- G2 phase (Gap 2): The cell continues to grow and prepares for mitosis.
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Metaphase: During metaphase, the chromosomes align along the metaphase plate (the center) of the cell. Each chromosome is attached to spindle fibers from opposite poles.
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Smooth Muscle: Sketch a spindle-shaped cell with a central nucleus and no striations.
-
Ciliated Epithelial Tissue: Sketch a layer of cells with cilia (hair-like structures) on their apical surface.
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Functions:
- Fibroblast: Produces collagen and other fibers in connective tissue.
- Mast cell: Releases histamine and other substances during inflammation and allergic reactions.
- Macrophage: Engulfs and digests cellular debris, microbes, and foreign substances.
- Adipocyte: Stores fat (lipids).
More Information
These are fundamental concepts in biology, covering animal classification, cell structure, cell cycle, and tissue types.
Tips
Ensure sketches are clearly labeled to get full credit. Remember the key functions of each cell type.
Sources
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