FALSE
The Mississippi River has had the most impact on the nations history
Answer: see explanation below
Explanation: the synapse is the junction between the terminal of a neuron and either another neuron or a muscle or gland cell, over which nerve impulses pass. Typically when the same experiences trigger nerve responses over synapses, they are remembered (strengthened) leading to even faster responses very much like the muscle memory. The NMDA receptors (NMDARs) are glutamate-gated cation channels with high calcium permeability, very critical for the development of the central nervous system and various processes vital to learning, memory, and the formation of neural networks during development in the central nervous system (CNS). Since memories are assumed to be represented by vastly interconnected neural circuits in the brain, synaptic plasticity is key to learning and memory. In this, the NMDA receptor is very crucial for controlling synaptic plasticity (the ability of synapses to strengthen or weaken, in response to increases or decreases in their activity over time) and memory function.
From the given options, the surveys, tests related to education, and unidentified questionnaires all belong to exempt research.
The fourth option is the correct answer.
<h3>What is meant by research?</h3>
Research is defined as the analysis of facts by examining the sources and available material about any topic.
Exempt research is one of the methods that focus on the study of human-related concepts where there is a minimum or no risk involved. The categories which are treated as exempt research can be education concepts, surveys, interview processes, federal-related research, food and taste studies, etc.
<u>Question's missing part:</u>
The following are the options related to the given question:
1) fraudulent research
2) non-ethical research
3) laboratory research
4) exempt research
Therefore, the provided categories are considered to be exempt research.
Learn more about the research in the related link:
brainly.com/question/18723483
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Empress Alexandra became increasingly unpopular with the Russian people because of her relationship with Rasputin.
<u>Explanation</u>
Alexandra and Rasputin's relationship was mostly based on her son's illness (he had hemophilia).
However, Russian people didn't like this because they believed that they were having an affair and that Rasputin was the one controlling Russia and not Alexandra.
