Which of the following questions about the origin of life on Earth is most scien
ID: 269377 • Letter: W
Question
Which of the following questions about the origin of life on Earth is most scientifically testable? (A) Why were the earliest life-forms created using only twenty amino acids? (B) Did life originate to make the universe a better place? (C) Was catalytic RNA used by ancient organisms as a stepping stone to acquire protein enzymes? (D) Can simple organic molecules form spontaneously in an oxygen-free atmosphere?
A micro electrode is inserted into a neuron. A voltage recorder then measures the voltage difference between the micro electrode inside the cell and an electrode placed outside the cell. Which of the following plots most accurately represents the changes to membrane potential throughout a single action potential? answer options below
Hello!! Please Help me with the two parts to this question page (15,16)!! I have the ap test this week and am really struggling to understand these concepts.. A letter answer and explanation for both would really help!!
100-11-100 100 50 100-1 100 100 50 0-20-10 (Aut) renuadel auruquiaW (Au) renuolod autiquraW (Au) renuadbExplanation / Answer
Please find the answers below:
Answer 15: Choice D (the primitive earth had a highly non-oxygenic environment and hence, the fact that early molecules were synthesized from such environments can be experimentally proved)
Answer 15: Choice B (the impulse transmission is a momentary effect which can be recorded as an increase in voltage followed by a rapid decrease in the same)
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