Why is continental crust much older than oceanic crust? Explain in terms of continental drift
What will be an ideal response?
Continents do not sink in subduction zones. Rather, when two continents collide, they cause uplifting of the Earth to form mountain ranges. As a result, continents are much older.
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Genetic testing performed on cells of the placenta is called ____, while a similar procedure that uses cells derived from the amniotic fluid is called ____
a. placenta sampling; chorionic villus sampling b. trophoblast testing; amniocentesis c. trophoblast testing; chorionic villus sampling d. chorionic villus sampling; amniocentesis e. placenta sampling; amniocentesis
The physical fragmentation of organic matter into smaller pieces is achieved primarily by invertebrate detritivores
Indicate whether the statement is true or false
Competition between beneficial microbes and potential pathogens is called microbial (antagonisms/synergy/toxicity)
What will be an ideal response?
Assuming that a clean-catch midstream urine was processed in the Clinical Microbiology Laboratory (CML), which one of the following colony counts is (are) indicative of a urinary tract infection?
A) 10,000 CFU/mL B) 100,000 CFU/mL C) >100,000 CFU/mL D) both b and c