Missing links in the fossil record prevent scientists from determining evolutionary lineages until _____ are discovered
a. marine fossils
b. homologous structures in related organisms
c. partial fossils
d. fossils showing intermediate body forms
e. coprolites of related organisms
ANSWER: d
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You've jogged across campus and arrived at your class on time. As you walk to your seat, you notice that you are still breathing more heavily than usual
This is because you are experiencing the ____ metabolism necessary to reestablish the resting metabolic rate of your cells. Fill in the blank with the appropriate word.
A phospholipid molecule contains a “head” portion that ____
a. is hydrophilic b. is derived from cholesterol c. contains two fatty acid chains d. is similar in structure to a triglyceride e. forms a hydrophobic barrier
Eukaryotic mRNA has a significantly longer half life than its prokaryotic counterpart. How is this accomplished in
eukaryotes? What processes tend to degrade mRNA molecules in both eukaryotes and prokaryotes, and why are these processes needed? What will be an ideal response?
When pollen from a flower's anther pollinates the same flower's stigma, the process is called ________.
Fill in the blank(s) with the appropriate word(s).