Provide a brief explanation of the relationship between amino acid sequences in proteins and nucleotide sequences in
DNA and what they can reveal about evolutionary relationships. What will be an ideal response?
Proteins and DNA contain a record of evolutionary change. A protein’s amino acid sequence
is encoded by DNA. The differences in amino acids indirectly reflect the number of DNA
base pair changes that must have occurred during evolution.
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Life is believed to have originated at hydrothermal springs on the ocean floor rather than on near the surface of Earth. What conditions made the hydrothermal springs the likely place for the beginning of life?
Relate the conditions of the early oceans to the likely metabolism of the first cells. What will be an ideal response?
All metabolic disorders result in serious phenotypic consequences. Indicate whether the statement is true or false
Nerves of the parasympathetic system typically stimulate organs in response to stress
____________________ Indicate whether the statement is true or false.
The book mentions that maple syrup comes from the xylem sap of a tree. While this is true, why do you think most people assume it comes from the phloem sap?
What will be an ideal response?