您的位置:三立在线 > SAT频道页 > AP > AP生物 > 每日一讲:AP生物单选题及解题思路
咨询热线:400-920-8185

每日一讲:AP生物单选题及解题思路

2019-04-11 22:01 三立在线 admin

分享到: 0

摘要:AP考试是由 collegeboard 组织的,对AP课程学习效果检验的标准化的考试,一年举行一次,且仅有一次。今天小编着重讲解AP生物单选题及解题思路。 单选题 AP生物选择题数目为69道,每个选择题有4个选项,考试时间为90分钟。 以下列举几个例子: Question(1) (1)Membranes-bound organelles have been animportant component in the evolution of complex, multicellular organisms.

  AP考试是由 collegeboard 组织的,对AP课程学习效果检验的标准化的考试,一年举行一次,且仅有一次。今天小编着重讲解AP生物单选题及解题思路。

  单选题

  AP生物选择题数目为69道,每个选择题有4个选项,考试时间为90分钟。

  以下列举几个例子:

  Question(1)

  (1)Membranes-bound organelles have been animportant component in the evolution of complex, multicellular organisms. Whichof the following best summarizes an advantage of eukaryotic cells havinginternal membranes?

  (A)Eukaryotic cells are able to reproducefaster because of the presence of organelles.

  (B)Some organelles, such as mitochondriaand chloroplasts, are similar to prokaryotic cells in structure.

  (C)Organelles isolate specific reactions,increasing metabolic efficiency.

  (D)Compartmentalization leads to a highermutation rate in DNA, which leads to more new species.

  解答:本题问的是真核细胞中内膜结构的优势是什么。考查了Essential Knowledge 2.B.3: Eukaryotic cells maintain internalmembranes that partition the cell into specialized regions。细胞的内膜系统在细胞内部构建了一个代谢反应的内部环境,一方面可以保证不同的反应在不同的地点发生,不相互影响;另一方面,也能保护细胞免受代谢反应可能带来的伤害。所以,这题正确答案是C。

  Questions (2)-(5)

  A biologist spent many yearsresearching the rate of evolutionary change in the finch populations of a groupof islands. It was determined that the average beak size (both length and mass)of finches in a certain population increased dramatically during an intensedrought between 1981 and 1987. During the drought, there was a reduction in thenumber of plants producing thin-walled seeds.

  (2)Which of the following procedures was mostlikely followed to determine the change in beak size?

  (A)A few finches were trapped in 1981 andagain in 1987, and their beak sizes were compared.

  (B)The beak size in fifteen finches wasmeasured in 1987, and the beak size in the original finches was determined byestimation.

  (C)The beak size in a large number offinches was measured every year from 1981-1987.

  (D)Finches were captured and bred in 1981,and the beak size of the offspring was measured.

  解答:本题考查了Essential Knowledge 1.C.3: Populations of organisms continue toevolve。本题比较简单,实验做的是1981-1987年间,干旱对于finch的beak size的影响。需要每年都进行测量,然后比较,所以正确答案是C。

  (3)Which of the following statements might bestexplain the increase in average beak size in the finch population during thedrought?

  (A)Finches with bigger beaks are betterable to crack thick-walled seeds and produce more surviving offspring.

  (B)Finches with bigger beaks can attackand kill finches with smaller beaks.

  (C)Finches with bigger beaks possessmore-powerful flight muscles and are able to find more food.

  (D)Finches that crack large seeds developlarger beaks over time.

  解答:本题考查了Essential Knowledge 1.C.3: Populations of organisms continue toevolve。题目问的是为什么干旱能够导致beak size的增加。Beak size的大小跟前文中资料的seeds肯定相关,因为干旱减少了thin-walled的数量。所以正确答案是A。

  (4)Which of the following best describes themechanism behind the change in beak size in the finch population?

  (A)The formation of two new finch speciesfrom a single parent species.

  (B)A change in gene frequencies in thefinch population due to selective pressure from the environmental change.

  (C)A new allele appearing in the finchpopulation as a result of mutation.

  (D)The achievement of dynamic equilibriumin the finch population as a result of homeostasis.

  解答:本题考查了Essential Knowledge 1.C.3: Populations of organisms continue toevolve。题目要求描述beak size大小变化的机制。在evolution中,selective pressure导致的结果是frequency of alleles的改变。所以,本题的正确答案是B。

  (5)The biologist discovered that from 1988 to1993, the average beak size declined to pre-1981 levels. The reversal in beaksize from 1988 to 1993 was most likely related to which of the followingevents?

  (A)A loss of food supply for the finches

  (B)The end of the drought

  (C)An increase in drought conditions

  (D)An increase in predators consumingfinches

  解答:本题考查了Essential Knowledge 1.C.3: Populations of organisms continue toevolve。题目问的是1988年到1993年间,beak size的大小又回落到1981年的水平。由于1981-1987期间,beak size变大是因为plant seeds的原因,而plant seeds的变化是因为干旱的原因。所以,只要干旱停止,beak size就会回落。所以,这一题的正确答案是C。

  以上是小编给大家带来的AP生物单选题及解题思路的相关资讯,预祝考生2019年5月AP考试取得满意成绩,5分向你招手啦~

AP超级学习资料包火热领取中!
包含:AP计算机真题
AP统计学真题
AP微积分词汇
AP英美文学资料
AP美国历史笔记
AP文学资料
AP物理真题
AP微观经济学资料
AP心理学资料与大纲
AP经济学讲义全套资料
要获取AP超级资料包,请点击文末按钮获取。

 

相关字搜索:每日一讲:AP生物单选题及解题思路   
AP在线咨询

Copyright ©2004-2018 www.xiaoma.com All Rights Resserved 三立在线版权所有

课程咨询电话:400-920-8185 邮箱:tech@sanlischool.com

课程咨询请扫描以上二维码

关于我们 网站地图

京ICP备14009560号-3

京公网安备 11010802021370号