<span>Motor end plates are associated with muscular contractions.
Motor end plates are the large and complex end formation of a motor neuron that
builds contact with the skeletal muscle fibers. Without motor end plates,
muscular contractions will not be possible. This works highly during emergency
situations where the body takes a fight or flight reaction. <span>
<span>A good
example is when the fingers touch a burning candle; these motor end plates get
quick impulses from the brain and send
signals to the muscles to move it away to prevent further damage to the body. Without
motor end plates we would be in a heap of trouble as this is the mechanism of
the body responsible for motor skills and quick reaction time.</span></span></span>
Answer: b. chemoautotrophs
Explanation: chemoautotrophs are organisms that obtain energy, molecules, water by the oxidation of electron donors in their environments. Chemoautotrophs are able to synthesize their own organic molecules from inorganic sources. They are different from phototrophs who requires sunlight to make their own food
5 atm pressure must be applied to compress the gas to a volume of only 150.0 ml.
<h3>Given</h3>
Mass of oxygen at room temperature =500.0 ml
Volume of pressure = 50 atm pressure.
The gas to a volume = 150.0 ml
<h3>Explanation</h3>
The volume decreases by the factor = 500.0 mL / 150.0 mL
= 10 / 3
The pressure of the gas increased by a factor of 10/3 , which would make its final value equal to
= 5.00 atm
So, 5 atm pressure must be applied to compress the gas to a volume of only 150.0 ml.
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Ferns make their own food. They grow and reproduce using spores instead of things like seeds. Humans on the other hand have to ingest food from their surrounding and when mature reproduce sexually. They can also choose if they want to reproduce or not while ferns don't have that option. Sexual reproduction is based on inseminating and egg cell, while ferns don't worry about this because the spores just fall on the ground.
The materials plants need in order to perform photosynthesis are Water and carbon dioxide.
<h3>What is photosynthesis?</h3>
Photosynthesis is a process of converting light energy into chemical energy.
Photosynthesis is performed by chlorophyll-containing plants to produce their food.
The process of photosynthesis is carried out in the presence of sunlight.
It requires water, carbon dioxide, and sunlight.
Thus, the correct option is B, water, and carbon dioxide.
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