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The following is a list of notable unsolved problems grouped into broad areas of physics. [1]Some of the major unsolved problems in physics are theoretical, meaning that existing theories seem incapable of explaining a certain observed phenomenon or experimental result.
Ras is a guanosine - nucleotide -binding protein. Specifically, it is a single-subunit small GTPase, which is related in structure to the G α subunit of heterotrimeric G proteins (large GTPases). G proteins function as binary signaling switches with "on" and "off" states.
The central dogma of molecular biology deals with the flow of genetic information within a biological system. It is often stated as "DNA makes RNA, and RNA makes protein", [ 1] although this is not its original meaning. It was first stated by Francis Crick in 1957, [ 2][ 3] then published in 1958: [ 4][ 5]
One-third of working-age black adults (more than 6 million people) were also uninsured or experienced a gap in coverage during the year. Blacks had the most problems with medical debt, with 31 percent of black adults aged 18 to 64 reporting Past-Due Medical Debt, vs. 23 percent of whites and 24 percent of Hispanics. [80]
The draft bill, to be called Pakistan Penal Code (Amendment Act) 2005, [118] seeks to abolish the un-Islamic custom of such marriages. Marriage to the holy book is a common custom in Sindh, especially among the feudal lords to avoid transfer of property out of family hands at the time of marriage of their daughter or sister.
E. coli is the most widely studied prokaryotic model organism, and an important species in the fields of biotechnology and microbiology, where it has served as the host organism for the majority of work with recombinant DNA. Under favourable conditions, it takes as little as 20 minutes to reproduce.
The educational gender gap in Organisation for Economic Co-operation and Development (OECD) countries has been reduced over the last 30 years. Younger women today are far more likely to have completed a tertiary qualification: in 19 of the 30 OECD countries, more than twice as many women aged 25 to 34 have completed tertiary education than have ...
Paleontology ( / ˌpeɪliɒnˈtɒlədʒi, ˌpæli -, - ən -/ PAY-lee-on-TOL-ə-jee, PAL-ee-, -ən- ), also spelled palaeontology[ a] or palæontology, is the scientific study of life that existed prior to the start of the Holocene epoch (roughly 11,700 years before present). [citation needed] It includes the study of fossils to classify ...