QUES: Phage therapy is another option that is being looked into for treating resistant strains of bacteria. The way that researchers are doing this is by infecting pathogenic bacteria with their own viruses, more specifically, bacteriophages. Bacteriophages, also known simply as phages, are precisely bacterial viruses that infect bacteria by disrupting pathogenic bacterium lytic cycles. By disrupting the lytic cycles of bacterium, phages destroy their metabolism, which eventually results in the cell's death. Phages will insert their DNA into the bacterium, allowing their DNA to be transcribed. Once their DNA is transcribed the cell will proceed to make new phages and as soon as they are ready to be released, the cell will lyse. One of the worries about using phages to fight pathogens is that the phages will infect "good" bacteria, or the bacteria that are important in the everyday function of human beings. However, studies have proven that phages are very specific when they target bacteria, which makes researchers confident that bacteriophage therapy is the definite route to defeating antibiotic resistant bacteria.
What is a worry of using phages?

ANS: phages will infect "good" bacteria

QUES: DC systems (especially third-rail systems) are limited to relatively low voltages and this can limit the size and speed of trains and cannot use low-level platform and also limit the amount of air-conditioning that the trains can provide. This may be a factor favouring overhead wires and high-voltage AC, even for urban usage. In practice, the top speed of trains on third-rail systems is limited to 100 mph (160 km/h) because above that speed reliable contact between the shoe and the rail cannot be maintained.
The lowest speed of trains on third-rail systems is limited to what?

ANS: unanswerable

QUES: From November 1940 – February 1941, the Luftwaffe shifted its strategy and attacked other industrial cities. In particular, the West Midlands were targeted. On the night of 13/14 November, 77 He 111s of Kampfgeschwader 26 (26th Bomber Wing, or KG 26) bombed London while 63 from KG 55 hit Birmingham. The next night, a large force hit Coventry. "Pathfinders" from 12 Kampfgruppe 100 (Bomb Group 100 or KGr 100) led 437 bombers from KG 1, KG 3, KG 26, KG 27, KG 55 and Lehrgeschwader 1 (1st Training Wing, or LG 1) which dropped 394 short tons (357 t) of high explosive, 56 short tons (51 t) of incendiaries, and 127 parachute mines. Other sources say 449 bombers and a total of 530 short tons (480 t) of bombs were dropped. The raid against Coventry was particularly devastating, and led to widespread use of the phrase "to conventrate". Over 10,000 incendiaries were dropped. Around 21 factories were seriously damaged in Coventry, and loss of public utilities stopped work at nine others, disrupting industrial output for several months. Only one bomber was lost, to anti-aircraft fire, despite the RAF flying 125 night sorties. No follow up raids were made, as OKL underestimated the British power of recovery (as Bomber Command would do over Germany from 1943–1945). The Germans were surprised by the success of the attack. The concentration had been achieved by accident. The strategic effect of the raid was a brief 20 percent dip in aircraft production.
The Coventry raid led to what phrase being in widespread use?

ANS: "to conventrate"

QUES: Classical statistical mechanics requires the existence of h (but does not define its value). Eventually, following upon Planck's discovery, it was recognized that physical action cannot take on an arbitrary value. Instead, it must be some multiple of a very small quantity, the "quantum of action", now called the Planck constant. Classical physics cannot explain this fact. In many cases, such as for monochromatic light or for atoms, this quantum of action also implies that only certain energy levels are allowed, and values in between are forbidden.
What is not required to exist in modern statistics mechanics?

ANS:
unanswerable