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The work of German chemist Johannes Wislicenus (1835-1902) on hydroxypropanoic acids played a crucial role in the development of J. H. van't Hoff's ideas on stereoisomerism.' By 1869, Wilicenus established that there are three isomeric forms of hydroxypropanoic acid, labeled A, B, and C, of partial structure C2H4(OH)(CO2H). Isomer A was isolated from sour milk and isomer B from a meat extract. * Isomers A and B: Isomer A was isolated from sour milk and isomer B from a meat extract. Both had the same physical properties except for their optical rotation; isomer A was levorotatory, while isomer B was dextrorotatory. * Isomer C: Isomer C was optically inactive and had distinct physical and chemical properties compared to isomers A and B.

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Social norms refer to: Group of answer choices cognitions. values. behaviors. All of these are correct.

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Sylvia invests her money in an account earning interest based on simple discount at a 2% annual rate. What is her effective interest rate in the sixth year? (Round your answer to two decimal places.)

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The figure below shows what happens in insect populations when crops are sprayed with insecticides. This is an example of which phenomenon? Insecticide application Survivors Chromosome with gene conferring resistance to pesticide Reproduction

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Fires are a naturally occurring phenomenon in the coastal ranges where redwoods occur. (recent past) The frequency and intensity of fires however is expected to increase due to warming temperature and drought (near future). In previous times the climate was much wetter and fires were rare, resulting in dense old growth stands of mature redwood forests (distant past) Apply this information to your knowledge of factors that influence species diversity in communities and suggest in which time period - distant past, recent past, near future - you would expect the overall plant diversity in the coastal range to be: Highest Lowest Intermediate Question 8 [Choose] ? [Choose] distant past near future recent past 3 pts

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if an organism is homozygous for a gene what does that mean?

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What is the fundamental difference between propaganda and news? Multiple Choice Propaganda is motivated by an ideological cause, whereas news is motivated by a desire to inform. There is no fundamental difference between propaganda and news. News is prepared by elites, whereas propaganda is prepared by the masses. Propaganda is always salacious and extreme, whereas news is dry and boring.

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? Question Consider exponential function h. h(x)=3^(x)+4 Select the correct answer from each drop-down menu.

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A. rectus abdominis, external abdominal oblique, internal abdominal oblique, linea alba B. difficult urination C. difficult defecation D. inability of a male to have an erection E. inability to do sit-ups A. pectoralis major B. pectoralis minor C. serratus anterior D. subclavius E. internal intercostals 16. The pelvic diaphragm is formed by the A. levator ani only. B. deep transverse perineum muscle. C. levator ani and coccygeus muscles. D. sphincter urethrae and sphincter ani muscles. E. coccygeus only. 17. Which of the following muscles moves the scapula? A. trapezius. B. biceps brachii. C. latissimus dorsi. D. pectoralis major. E. triceps brachii. 18. The arm is attached to the thorax by the A. pectoralis major and teres major. B. supraspinatus and latissimus dorsi. C. pectoralis minor and pectoralis major. D. latissimus dorsi and pectoralis major. E. biceps brachii and triceps brachii. 19. Which of the following muscles is part of the rotator cuff? A. deltoid. B. teres major. C. infraspinatus.

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A plane P1 in R3 is perpendicular to the vector n = <5, 7, 8> , and contains the point ( - 7, 7, - 7). a. Find the scalar equation of the plane P1. Equation: b. Is the point (-7,0,8) on the plane? Yes No c. Write a scalar equation of the plane P2 that is parallel to P1 and passing though the point ( - 6, 0, 10) Equation:

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april g.