The model illustrates that the Sun’s gravity holds each planet in its orbit. Students in a science class were asked to revise th
e model to include an explanation of how the effect of the Sun’s gravity on Earth. Which student’s explanation is best?
Student 1: The sun has less gravitational pull on Earth because it is closer.
Student 2: The Sun has less gravitational pull on Neptune because it is bigger.
Student 3: The Sun has less gravitational pull on all planets that are in orbit.
Student 4: The Sun has less gravitational pull on Neptune because it is farther away.
Student 1: The sun has less gravitational pull on Earth because it is closer.
Student 2: The Sun has less gravitational pull on Neptune because it is bigger.
Student 3: The Sun has less gravitational pull on all planets that are in orbit.
Student 4: The Sun has less gravitational pull on Neptune because it is farther away.
1 answer:
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Answer:
a) 28 cases
b) 3 cases
Explanation:
a) From the table of genetic codes, there are 28 codons that specify more than one amino acid assuming only the first two nucleotides are considered. In these cases, one cannot outrightly specify the amino acid the genetic codes are coding for without knowing the last nucleotide of the codes. <em>For example, UU can be for Phenylalanine or Leucine, CA can be for Histidine or Glutamine, etc. </em>
b) From the table of genetic codes, the first two nucleotides of Arginine can be either of CG or AG, that of Serine can be either of UC or AG while that Leucine can be either of CU or UU. Only in these <u>3 cases</u> would one fail to know which are the first two nucleotides assuming the name of the amino acids are given.
<em>See the attached image for the genetic code.</em>
