Answer:
(B) They Bind to receptor proteins on the surface of the postsynaptic neuron.
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Amoeba, paramecia, and euglenas
The answer is reactive; active. Although a basic feature of operant conditioning is support or reinforcement, classical conditioning relies more on link between stimuli and responses which makes it reactive. A second difference is that much of operant conditioning is based on voluntary and active behavior, while classical conditioning often comprises involuntary and reactive reflexive behavior.
Answer:
The correct answer is option D, that is, bottleneck effect.
Explanation:
A phenomenon, which occurs due to events like earthquakes, floods, or other natural calamities that result in the severe declination in the size of a particular population is known as the bottleneck effect. The bottleneck effect is an extreme illustration of genetic drift that results in the reduction of a population's genetic variability.
With the decline in the size of a specific population, a reduction in the genetic variability of the same population is witnessed due to the loss of alleles. This eventually makes the population vulnerable to pollution and diseases. Hence, the given case is an example of the bottleneck effect.
