Apples are drawn to a massive object, like the earth, and fall down under a gravitational constant. On the other hand, planets revolve around a more massive object under the same premise. It’s the same idea, just one follows a linear path, and the other has a uniform circular motion path because other forces are acting on it. In other words, the planets ARE still falling, but the sun is also pulled by them so they just keep dancing.
        
             
        
        
        
Those proteins are called apolipoprotien.
        
             
        
        
        
Its prophase one or prophase 2
        
             
        
        
        
Given question is incomplete. Complete question has been attached.
Answer:
C. Excessive potassium has diffused out causing hyperpolarization.
Explanation:
The nerve action potential can be divided into following stages:
- Stimulus is detected by the cell in resting stage.
- Sodium channels in the membrane open from where influx of sodium ions occur which is called depolarization
- After a while, sodium channels close and potassium channels open from where efflux of potassium ions occur which is called repolarization.
- The membrane potential further lowers due to continous efflux of potassium ions which is called hyperpolarization.
- After a while potassium channels close and membrane returns to its resting stage.
In the given figure, stage 4 depicts hyperpolarization because the membrane potential has dropped to the lowest point below -70mV. Hence, option C is correct. 
 
        
             
        
        
        
The correct statement is that the concentration of acetylcholine will be inhibited by enzymes and can cause several diseases as follows:
- Alzheimer's disease-related to damage to brain cells,
- memory loss,
- and thinking ability.
How to reduce the symptoms of these diseases is to use drugs that contain cholinesterase inhibitors.
<h2>Further Explanation
</h2>
Acetylcholine is a neurotransmitter that plays an important role in the functioning of the autonomic nervous system. Acetylcholine is one of the most commonly recognized neurotransmitters or nerve stimulating chemicals. These neurotransmitter compounds can be found in the nervous system.
There are several side effects of the acetylcholine drug, which are as follows:
- Can cause a lot of sweat
- Excessive salivation
- Stomach ache
- Headache
- Blood vessel dilation
- Nausea and vomiting
- Diarrhea is a sign of an increase in parasympathetic tone.
Learn More
- about chemicals brainly.com/question/8735339
- about enzymes brainly.com/question/6577765
Details
Grade: Middle School
Subject: Biology
Keyword: chemicals, enzymes, Acetylcholine, neurotransmitter