determine the nature of the expression of the laczya genes, represented by l, and label each genotype as constitutive, inducible, or no transcription in the presence of lactose. assume that all promoters are wild type.

Explain the importance of producers, primary consumers, secondary consumers. and decomposers in an ecosystem

Which kind of aquatic ecosystem does the photograph most likely show? a. marsh b. swamp c. lake d. river

The observations of hooke and van leeuwenhoek documenting the existence of microscopic cells formed the basis of what important theory? a. the cell theory stating that all living things are composed of cellsb. the theory of spontaneous generation, which held that life forms could arise spontaneouslyc. the theory of chemotherapy, or use of antimicrobials to destroy pathogenic organismsd. the germ theory of disease and causative agents