SAT文章閱讀模擬題之cells and genes.

　　下面為大家整理的是一篇關(guān)于cells and genes的SAT文章閱讀模擬題，后面附有相關(guān)題目和正確答案。SAT文章閱讀考試涉及到的類別很多，需要大家很多的練習(xí)。下面大家就和澳際小編一起來看看詳細(xì)內(nèi)容吧。

　　1. According to the passage, the five well-known plant hormones are not usul in controlling the growth of crops because

　　(A) it is not known exactly what functions the hormones perform

　　(B) each hormone has various fects on plants

　　(C) none of the hormones can function without the others

　　(D) each hormone has different fects on different kinds of plants

　　(E) each hormone works on only a small subset of a cell’s genes at any particular time

　　2. The passage suggests that the place of hypothalamic hormones in the hormonal hierarchies of animals is similar to the place of which of the following in plants?

　　(A) Plant cell walls

　　(B) The complement of genes in each plant cell

　　(C) A subset of a plant cell’s gene complement

　　(D) The five major hormones

　　(E) The oligosaccharins

　　3. The passage suggests that which of the following is a function likely to be performed by an oligosaccharin?

　　(A) To stimulate a particular plant cell to become part of a plant’s root system

　　(B) To stimulate the walls of a particular cell to produce other oligosaccharins

　　(C) To activate enzymes that release specific chemical messengers from plant cell walls

　　(D) To duplicate the gene complement in a particular plant cell

　　(E) To produce multiple fects on a particular subsystem of plant cells

　　4. The author mentions specific fects that auxin has on plant development in order to illustrate the

　　(A) point that some of the fects of plant hormones can be harmful

　　(B) way in which hormones are produced by plants

　　(C) hierarchical nature of the functioning of plant hormones

　　(D) differences among the best-known plant hormones

　　(E) concept of pleiotropy as it is exhibited by plant hormones

　　5. According to the passage, which of the following best describes a function performed by oligosaccharins?

　　(A) Regulating the daily functioning of a plant’s cells

　　(B) Interacting with one another to produce different chemicals

　　(C) Releasing specific chemical messengers from a plant’s cell walls

　　(D) Producing the hormones that cause plant cells to differentiate to perform different functions

　　(E) Influencing the development of a plant’s cells by controlling the expression of the cells’ genes

　　6. The passage suggests that, unlike the pleiotropic hormones, oligosaccharins could be used fectively to

　　(A) trace the passage of chemicals through the walls of cells

　　(B) pinpoint functions of other plant hormones

　　(C) artificially control specific aspects of the development of crops

　　(D) alter the complement of genes in the cells of plants

　　(E) alter the fects of the five major hormones on plant development

　　7. The author discusses animal hormones primarily in order to

　　(A) introduce the idea of a hierarchy of hormones

　　(B) explain the fects that auxin has on plant cells

　　(C) contrast the functioning of plant hormones and animals hormones

　　(D) illustrate the way in which particular hormones affect animals

　　(E) explain the distinction between hormones and regulatory molecules

　　Correct Answers：BDAEECA

　　以上就是這篇關(guān)于cells and genes的SAT文章閱讀模擬題的全部?jī)?nèi)容，后面的正確答案沒有解析。大家在備考自己的SAT閱讀考試的時(shí)候，可以根據(jù)自己的實(shí)際情況，到文章中進(jìn)行查找，這樣就能更好的掌握答題的方法了。

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