Where are MHC_II cell surface proteins found?
A. macrophages, B cells, and dendritic cells
B. erythrocytes
C. acidophils
D. neutrophils
E. neutrophils and macrophages
A. macrophages, B cells, and dendritic cells
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Miller and Urey's experiment was ground breaking because
A. This was the first example of an experiment being used that inserted oxygen into the prebiotic soup. B. This was the first attempt to apply scientific experimentation to the quest of understanding the origin of life. C. They hypothesized what could have been the first molecules formed, but they could not demonstrate this in a scientific experiment. D. This was the last experiment that used boiling water as a trigger mechanism for the production of macromolecules. E. This was the first experiment based on the theory that organic carbon actually arrived from outer space.
Chlamydias are bacteria that possess cell walls, but lack peptidoglycan
Indicate whether the statement is true or false.
The concept of nuclear equivalence states that:a
all of the somatic cells in an adult organism have the same genes. b. the genes of the individuals of the same species are exactly the same. c. as cells mature, unneeded genes are lost. d. the nuclei of all organisms are the same. e. nuclei of individuals of the same species are the same size.
Antimicrobial agents that damage nucleic acids also affect
A. the cell wall. B. the cell membrane. C. the viral envelope. D. endospores. E. protein synthesis.