Then Endosymbiotic Theory points to mitochondria and chloroplasts as evidence eukaryotic cells evolved from prokaryotic because.... mitochondria and chloroplasts are similar in size to prokaryotic cells Omitochondria and chloroplasts have their own unique DNA Omitochondria and chloroplasts have 70S ribosomes like prokaryotic cells mitochondria and chloroplasts create energy, a requirement of living things O all are evidence supporting the Theory
Anatomy and Physiology of Special Sensory Organs
Sensory organs can be labeled as special sensory structures that permit sight, hearing, odor, and flavor. Sensory structures permitting proprioception, touch, thermal, and pain perception can be classified as more advanced sensory organs. The sensory neurons are trained to find out modifications in the external and internal conditions so that a person's body can react to that change. A stimulus is the first signal that is recognized by any sensory receptor of the body. Stimulus is an impulse generated when there is a change in the surroundings of a person. For example, a heated environment will alert the brain through the thermal sensory organs and generate a reflex accordingly.
Sensory Receptors
The human sensory system is one of the most complex and highly evolved structures, which processes a myriad of incoming messages. This well-coordinated system helps an organism or individual to respond to external stimuli, appropriately. The sensory receptors are an important part of the sensory system. These receptors are specialized epidermal cells that respond to external environmental stimuli. These receptors consist of structural and support cells that form the peripheral unit of the receptor and the neural dendrites which receive and detect the external stimuli.
![### Understanding Endosymbiotic Theory
Endosymbiotic Theory suggests that mitochondria and chloroplasts serve as key evidence for the evolution of eukaryotic cells from prokaryotic cells. This theory highlights several points that support this idea:
#### Key Points:
1. **Similar Size**: Mitochondria and chloroplasts are similar in size to prokaryotic cells.
2. **Unique DNA**: Mitochondria and chloroplasts possess their own unique DNA.
3. **Ribosomes**: Mitochondria and chloroplasts have 70S ribosomes, which are similar to those found in prokaryotic cells.
4. **Energy Creation**: Mitochondria and chloroplasts are crucial for energy production, which is essential for living organisms.
#### Multiple Choice Question:
Which of the following points support the Endosymbiotic Theory that eukaryotic cells evolved from prokaryotic cells?
- [ ] Mitochondria and chloroplasts are similar in size to prokaryotic cells
- [ ] Mitochondria and chloroplasts have their own unique DNA
- [ ] Mitochondria and chloroplasts have 70S ribosomes like prokaryotic cells
- [ ] Mitochondria and chloroplasts create energy, a requirement of living things
- [ ] All are evidence supporting the theory
The correct answer is: **All are evidence supporting the theory.**
These points collectively provide substantial evidence to support the Endosymbiotic Theory, demonstrating how mitochondria and chloroplasts, both essential organelles in eukaryotic cells, share several characteristics with prokaryotic cells. This indicates a likely evolutionary relationship.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe2211ab1-1b54-416c-9fa0-dde6eb9519a7%2F249d21ca-3767-4098-849d-4c88d9c679db%2Fg6h8did_processed.jpeg&w=3840&q=75)
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