Which of the following is NOT a cause of increasing CO2 levels?
A) burning of fossil fuels
B) home energy use
C) production of manufactured goods
D) creating compost piles from vegetable waste
D
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Beadle and Tatum discovered that metabolic pathways are studied most effectively using which of the following techniques?
A) creating multiple gene mutations resulting in nonfunctional enzymes specific to a metabolic pathway B) adding intermediates to a metabolic pathway C) removing all intermediates of a metabolic pathway D) creating single gene mutations resulting in nonfunctional enzymes specific to a metabolic pathway
Chlorine is consumed when it reacts with organic materials
Indicate whether the statement is true or false.
In which of the following situations is genetic drift likely to occur?
A. A small population of lizards is isolated on a small island. B. A mouse develops a fur coat that enables it to hide more readily from predators. C. Two schools of tuna merge together to form one large population. D. A river changes course, changing the local environment for a population of butterflies.
In the case of infants and small children, how much blood is usually drawn for bacterial culture?
a. 0.5 mL b. 1 mL c. 1 to 5 mL d. No more than 10 mL