The observations of Hooke and van Leeuwenhoek documenting the existence of microscopic cells formed the basis of what important theory?
a. the germ theory of disease and causative agents
b. the theory of spontaneous generation, which held that life forms could arise spontaneously
c. the theory of chemotherapy, or use of antimicrobials to destroy pathogenic organisms
d. the cell theory, stating that all living things are composed of cells
Answer: d. the cell theory, stating that all living things are composed of cells
You might also like to view...
Escherichia coli is found naturally in the intestines of birds, humans, and animals
Indicate whether the statement is true or false.
In general, when cytosine bases in CpG islands are methylated:
A. transcription is active and rapid. B. transcription is active, but slow. C. transcription is repressed. D. translation is active and rapid. E. translation is repressed.
Scientists study microorganisms on Earth today to search for life forms elsewhere, as well as to explore the origins of life on Earth. These microorganisms that are studied are referred to as:
A. extirpated. B. extant. C. existing. D. extinct.
Three human disorders—fragile X syndrome, myotonic dystrophy, and Huntington's disease–are conceptually linked by a common mode of molecular upset. Describe the phenomena that link these disorders
What will be an ideal response?