Victory for the ACT Student Text 15e
L ESSON 4 | F URTHER U SE OF R EADING S TRATEGIES , P ART 2 • 129
The author implies that the Southwest attracted artists for all of the following reasons EXCEPT: A. the quality of life was different from that of large urban centers. B. the inhabitants and culture provided interesting subject matter. C. New Mexico was the only state to support young, avant-garde painters. D. the region offered unusual geological features and landscapes. The author implies that most of the artists who painted in the Southwest: F. originally studied in Paris. G. lived there only temporarily. H. painted only landscapes. J. received considerable recognition. PASSAGE IV NATURAL SCIENCE: This passage discusses the development of basic inheritance theories and the role of DNA in genetic mutation processes. In 1866, Gregor Mendel published the results of his studies on the breeding of different races of pea plants. Through his experiments, Mendel discovered a pattern of inheritance and subsequently developed the concept of a “unit of inheritance.” Mendel started with a pure stock of pea plants that had recognizably different Ǥ ϐ Ǧ pollinated the different races of plants and noted the characteristics of the different offspring over several generations. Mendel concluded that a pair of discrete “factors” governed each trait and that they segregated upon the formation of the gametes. This pair of factors is now known as the maternally and paternally derived alleles on ϐ together at fertilization and later segregate during meiosis. Subsequent studies have shown that new genes could appear as mutations of existing genes and that crossing over and recombination could redistribute maternal and paternal characteristics. Genes can
21. The author mentions which of the following facts about Georgia O’Keeffe? I. She resided permanently in the Southwest. II. She enjoyed considerable and lasting fame. III. She created modern, abstract paintings. A. I only B. II only C. I and III only D. I, II, and III Stuart Davis, Marsden Hartley, and John Sloan were painters who painted mainly in: F. Paris. G. New Mexico. H. cities in the Eastern United States. J. Rome. occur in a linear sequence, and groups of genes that segregate together are called “linkage groups . ” The chromosome is the carrier of the linear array of genes and the physical basis of the linkage groups. It was originally thought that proteins were the genetic carrier. In contrast to nucleic acids, proteins were known to mediate complex reactions and to be composed of a variety of different building blocks. There are approximately 20 different amino acids in a protein, but only 4 different nucleotides in a nucleic acid molecule. It was not until 1944 that Avery et al. noted that deoxyribonucleic acid (DNA) was the genetic carrier, not protein. Avery and his co-workers conducted experiments on the transformation in pneumococcus. Two strains of the bacteria had been isolated: one produced colonies having a smooth (S) appearance and was able to cause pneumonia in a suitable host; the other grew into rough (R) colonies because of a defect in its capsule and was non-virulent. When a cell-free extract of the S bacteria was added to the medium in which the R strain was growing, a few of the R bacteria grew into smooth colonies and were virulent. They had become transformed. From the time of transformation, the progeny of that cell continued to have the properties of the S strain. The 30 35 40 45 50 55 22.
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Master Moves Students tend to get nervous about Natural Science passages in the Reading section— after all, why are they there? This is the Reading section, isn’t it? Luckily, you know that you do not need to bring any science content knowledge to the ACT test (not in the Reading section and not in the Science). All of the information you will need to answer questions is in the provided text, so you and a science whiz will be on a ϐ in attacking this passage.
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