Which of the following is the correct sequence of events in the origin of life?
I. formation of protobionts
II. synthesis of organic monomers
III. synthesis of organic polymers
IV. formation of DNA-based genetic systems
A) I, II, III, IV
B) I, III, II, IV
C) II, III, I, IV
D) II, III, IV, I
C
You might also like to view...
Which statement describes the functioning of photosystem II?
A) Light energy excites electrons in the thylakoid membrane electron transport chain. B) Photons are passed along to a reaction-center chlorophyll. C) The P680 chlorophyll donates a pair of protons to NADP+, which is thus converted to NADPH. D) The electron vacancies in P680+ are filled by electrons derived from water. E) The splitting of water yields molecular carbon dioxide as a by-product.
The majority of control elements for regulation of cellular processes in eukaryotes and archaea occurs at the level of ________ initiation.
What will be an ideal response?
According to Stern's experiment described in Figure 6.17, which one of the following enzymes was shown to form an intermediate complex with its substrate(s)?
A. -galactosidase B. pepsin C. DNA polymerase D. lysozyme E. catalase
Which of the following is microscopy in which the microscope is fitted with light filters that enable the excitation of the specimen with a specific wavelength?
A. Bright-field microscopy B. Dark-field microscopy C. Epifluorescence microscopy D. Electron microscopy