Free Test Prep MCAT Exam Questions

All of the following are true regarding the function of neurons EXCEPT:Section: Biological Sciences 

Yeast can be used to covert simple sugars into:Section: Physical Sciences 

In the course of gathering data in an experiment, a researcher develops the following correlation matrix:Table 1 Correlation MatrixWhich of the following pairs of variables are most strongly correlated?Section: Psychology and Sociology 

The Russia which emerged from the terrible civil war after the 1917 Revolution was far from the Bolsheviks’original ideal of a non-exploitative society governed by workers and peasants. By 1921, the regime wasweakened by widespread famine, persistent peasant revolts, a collapse of industrial production stemming fromthe civil war, and the consequent dispersal of the industrial working class – the Bolsheviks’ original base ofsupport. To buy time for recovery, the government in 1921 introduced the New Economic Policy, which allowedprivate trade in farm products (previously banned) and relied on a fixed grain tax instead of forced requisitionsto provide food for the cities. The value of the ruble was stabilized. Trade unions were again allowed to seekhigher wages and benefits, and even to strike. However, the Bolsheviks maintained a strict monopoly of powerby refusing to legalize other parties.After the death of the Revolution’s undisputed leader, Lenin, in January 1924, disputes over the long-rangedirection of policy led to an open struggle among the main Bolshevik leaders. Since open debate was stillpossible within the Bolshevik Party in this period, several groups with differing programs emerged in the courseof this struggle.The program supported by Nikolai Bukharin – a major ideological leader of the Bolsheviks with no power baseof his own – called for developing agriculture through good relations with wealthy peasants, or “kulaks.”Bukharin favored gradual industrial development, or “advancing towards Socialism at a snail’s pace.” In foreignaffairs, Bukharin’s policy was to ally with non-Socialist regimes and movements that were favorable to Russia.A faction led by Leon Trotsky, head of the Red Army and the most respected revolutionary leader after Lenin,called for rapid industrialization and greater central planning of the economy, financed by a heavy tax on thekulaks. Trotsky rejected the idea that a prosperous, human Socialist society could be built in Russia alone(Stalin’s slogan of “Socialism in One Country”), and therefore called for continued efforts to promote workingclass revolutions abroad. As time went on, he became bitterly critical of the new privileged elite emerging withinboth the Bolshevik Party and the Russian state.Joseph Stalin, General Secretary of the Bolshevik Party, was initially considered a “center,” conciliating figure,not clearly part of a faction. Stalin’s eventual supremacy was ensured by three successive struggles within theparty, and only during the last did his own program become clear.First, in 1924-25, Stalin isolated Trotsky, allying for this purpose with Grigori Zinoviev and Lev Kamenev,Bolshevik leaders better known than Stalin himself, whom Trotsky mistakenly considered his main rivals. Stalinmaneuvered Trotsky out of leadership of the Red Army, his main potential power base. Next, Stalin turned onZinoviev and Kamenev, using his powers as head of the Party organization to remove them from partyleadership in Leningrad and Moscow, their respective power bases. Trotsky, Zinoviev, and Kamenev thenbelatedly formed the “Joint Opposition” (1926-27). With Bukharin’s help, Stalin easily outmaneuvered theOpposition: Bukharin polemicized against Trotsky, while Stalin prevented the newspapers from printingTrotsky’s replies, organized gangs of toughs to beat up his followers, and transferred his supporters toadministrative posts in remote regions. At the end of 1927, Stalin expelled Trotsky from the Bolshevik Party andexiled him. (Later, in 1940, he had him murdered.) Zinoviev and Kamenev, meanwhile, recanted their views inorder to remain within the Party.The final act now began. A move by kulaks to gain higher prices by holding grain off the market touched off acampaign against them by Stalin. Bukharin protested, but with the tradition of Party democracy now all butdead, Stalin had little trouble silencing Bukharin. Meanwhile, he began a campaign to force all peasants – notjust kulaks – onto state-controlled “collective farms,” and initiated a crash industrialization program during whichhe deprived the trade unions of all rights and cut real wages by 50%. Out of the factional struggle in which heemerged by 1933 as sole dictator of Russia, Stalin’s political program of building up heavy industry on thebacks of both worker and peasant emerged with full clarity.The passage supports the idea that struggles within the Bolshevik Party were primarily:Section: Verbal Reasoning 

An individual is born with a mutation causing her to partially retain a form of fetal hemoglobin into adulthood.Compared to a normal individual, this person would exhibit:Section: Biological Sciences