Answer:
Lead is toxic mostly because during biochemical reactions it tries to substitute certain metals. hence while doing this, It disrupts with the proteins that control blood pressure, the production of heme and the formation of sperm. Through reactions that propagate electrical signals in the brain, lead often consumes calcium, which reduces the capacity to think and retrieve information.
Explanation:
Lead is toxic mostly because during biochemical reactions it tries to substitute certain metals. hence while doing this, It disrupts with the proteins that control blood pressure, the production of heme and the formation of sperm. Through reactions that propagate electrical signals in the brain, lead often consumes calcium, which reduces the capacity to think and retrieve information.
The answer is; D
The simplicity of the prokaryote bacteria cells can depict the origin of life. It is simply composed of microscopic unit enclosed in a plasma membrane and cell wall. The inside contains a small DNA molecule, ribosomes and cytoplasm (they have no organelles). They have been around for 2 billion years on earth before other organisms evolved from them.
(B) When the molecules are insoluble.
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There are three different types of observation methods for the purpose of research. These three methods include the structured observation, participant observation, and the field experiments.
The structured observation is the method of data collection which is done without the direct involvement of the researcher with the participants. the participant observation is the type of observation which is used in the experiments involving qualitative research. The field experiment is the method of observation when the experiment rules are applied in the real world.
Among the given three types of observations, the structured observation is the type of observation that is used while observing the bacteria once a week for a period of a month.
Hence, the answer is structured observation.
Histamine in Digestion Histamine plays a role in gastric secretion by helping to induce the production of acid in the stomach. Histamine in sleep: the body regulates the amount of histamine in circulation and maintains a careful balance.
