Which statement is correct regarding internal or external respiration? a. internal respiration occurs in the alveoli b. internal respiration occurs in the body’s tissues c. external respiration occurs in the body’s tissues d. external respiration involves the exchange of gases with the internal environment e. none of the statements are correct

Each trait of a plant is determined a. an allele b. one gene c. a pair of genes d. one dominant gene

Are these strong bases, neutral, strong acids, weak acids or weak base household bleach (ph=12.6) fluid in a car's battery (ph of less than 1.0) milk (ph=6.7) stomach contents (ph=2.2) pure water (ph=7)

Sampling lake water for microscopic organisms is not as easy as it sounds when you want to both count and identify species. in a given water sample, your bacteria of choice can be rare or difficult to culture, particularly given the mixture of bacteria in a biofilm. which of the following culture media would be best for growing fecal coliforms when they are relatively less abundant than other bacteria in the lake? anaerobic culture medium enrichment culture medium complex culture medium basic culture medium