Answer:
A. A water molecule passes through a semi permeable membrane
Explanation:
Facilitated diffusion is the diffusion of a molecule without any assistance from a protein or protein channel.
In facilitated diffusion, a molecule will diffuse by itself through a semi permeable membrane, such as the cell membrane.
Answer choices B, C, and D are incorrect because they are all examples of facilitated diffusion. The molecules required assistance from a protein.
Answer choice A is correct because the water molecule was able to pass through by itself.
So, the correct answer is A. A water molecule passes through a semi permeable membrane
Newton's three laws of motion may be stated as follows: 1. Every object in a state of uniform motion will remain in that state of motion unless an external force acts on it. 2. Force equals mass times acceleration. 3. For every action there is an equal and opposite reaction.
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Sensory" Neuron
"Associative Neuron"
"Motor" Neuron
Answer: The correct answer is 1) biological species are defined by reproductive isolation and 3) biological species are the largest unit of population in which successful reproduction is possible.
According to biological species concept, two organisms belong to same species if they are capable of interbreeding and producing viable fertile offsprings.
This means that group of these members belonging to the same species is reproductively isolated from other group of species. Thus, according to this concept, successful reproduction is possible.
Therefore, option 1) and 3) is the right answer.
