In the human pulmonary circuit, blood passes through which of the following?
a. liver
b. limbs
c. lungs
d. digestive organs
e. brain
ANSWER: c
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Which of the following enzymes or enzyme subunits does not rely on ATP hydrolysis for its correct function?
A. DnaB helicase B. primase C. Pol III clamp loader D. DnaA E. DnaC
In eukaryotes, DNA replication begins at a single origin of replication on each chromosome
Indicate whether the statement is true or false
Oxygen, but not carbon dioxide, can bind to the heme group of hemoglobin
Indicate whether the statement is true or false
If you live on a river delta or coastline, you may not be able to eat the local shellfish because of high levels of toxins, even though you may be able to drink the water taken from the same source. Why?
A. Shellfish filter-feed and concentrate the dilute pollutants from the water, thus acting as early warning indicators of severe pollution. B. Shellfish regularly consume poisonous red tide organisms. C. Shellfish seasonally produce toxic substances. D. Most harmless native clams have been replaced by bad species.