B. ileum
C. jejunum
D. pyloric sphincter
The terminal part of the small intestine, after the duodenum and the jejunum, is the ileum. It is the last part before the large intestine begins.
The terminal portion of the small intestine is known as the Ileum. It is part of the small intestine that comes after the jejunum and just before the large intestine. The small intestine is divided into three sections: The duodenum, the jejunum, and finally the ileum. The duodenum is the first section, originally connected to the stomach via the pyloric sphincter, followed by the jejunum, and ending with the ileum.
The terminal portion of the small intestine is known as the ileum. It is the longest portion of the small intestine, extending from the jejunum to the large intestine. The ileum is responsible for the absorption of nutrients, including vitamins, minerals, and bile salts.
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Some deep-sea organisms appear to be primary consumers, but no plants live near the hydrothermal vents.
Some bacteria and archaea (unicellular organisms), which are known as chemoautotrophs and are typically found in hydrothermal vents in the deep ocean, are examples of chemolithotrophs. These organisms build biomass by the oxidation of inorganic chemical substances. Thus, option A is correct.
Autotrophs are organisms that derive their energy from chemical interactions or the sun. They are also known as producers since they create organic molecules from simple inorganic substances and energy.
Some organisms use the energy that inorganic molecules release to power their core biological functions.
Therefore, Some organisms rely on energy captured from inorganic compounds to drive basic biological processes.
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The observation of bacteria consuming molecular hydrogen helps explain how energy flows through this ecosystem and how primary consumers can exist without relying on photosynthetic plants, which cannot thrive in the absence of sunlight near hydrothermal vents.
The observation that deep-sea bacteria consume molecular hydrogen (H2) is most relevant to resolving the apparent contradiction that "Some organisms rely on energy captured from inorganic compounds to drive basic biological processes" and "Some deep-sea organisms appear to be primary consumers, but no plants live near the hydrothermal vents."
The process by which these bacteria consume molecular hydrogen and utilize it to produce organic compounds through chemosynthesis can provide an explanation for the energy source that supports the primary consumers (in this case, mussels) near the hydrothermal vents. Chemosynthesis allows organisms to generate energy and organic matter from inorganic compounds, such as H2, H2S, and CH4, which are abundant near hydrothermal vents. These primary consumers (like mussels) can then feed on these chemosynthetic bacteria, forming the basis of the food web in this unique ecosystem.
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b. ecological effects of energy
c. ecological effects of extinction or species introduction
d. species relocation
c. nucleus
b. endoplasmic reticulum
d. golgi apparatus
Man-made
Neither
Both
Answer: The answer is B), Man-made.
Explanation: