In eukaryotes DNA replication proceeds in one direction along the DNA molecule
a. true
b. false
Answer: b. false
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An individual tree can maintain a symbiotic relationship with many different species of mycorrhizae simultaneously
Indicate whether the statement is true or false.
Which scientist(s) was/were awarded a Nobel prize 50 years after discovering viral oncogenesis?
A) Rous B) Epstein and Barr C) Burkitt D) Folkman E) Kaposi
It has been known for some time that fetal cells can be found in a pregnant woman’s bloodstream, sometimes years
after a pregnancy. A new technique has been developed that allows scientists to isolate these fetal cells from a pregnant woman’s blood. Why would this be a useful new tool for parents interested in genetic testing of their fetus?
What will be an ideal response?An example of local control over breathing is ____
a. automated lung ventilation and perfusion adjustments to changing O2 levels in the blood b. the aortic bodies signaling an increase in breathing rate when blood pH is acidic c. refinement by the interneuron groups of the pons of contractions involved in inhalation and exhalation d. the carotid bodies signaling an increase in breathing rate when O2 levels are low e. the ventral group of interneurons signaling an increase in breathing rate and depth during exercise