SAT2考试是SAT subject test的通常说法，SAT2考试有别于SAT1，它是一种专项考试，考察学生某一科目的能力。下面无忧小编为大家搜集整理了两道SAT2生物练习题，附答案，希望对大家有所帮助。

　　The first items in the Biology E/M test are arranged in sets with common answer choices. These items appear in the core section of the test. Remember, these are not MATCHING challenges — each answer choice can be used once, more than once, or not at all.

　　Nitrogenous base that occurs in RNA but not in DNA

　　Answer Choices

　　(A) Deoxyribose

　　(B) Ribose

　　(C) Uracil

　　(D) Cytosine

　　(E) Thymine

　　The correct answer is C

　　Explanation

　　Difficulty: Easy

　　The correct answer is Uracil. Uracil is one of the four nitrogenous bases found in RNA. The other three nitrogenous bases in RNA are also found in DNA, but uracil is not found in DNA.

　　Sugar that occurs in DNA but not in RNA

　　Answer Choices

　　(A) Deoxyribose

　　(B) Ribose

　　(C) Uracil

　　(D) Cytosine

　　(E) Thymine

　　The correct answer is A

　　Explanation

　　Difficulty: Easy

　　The correct answer is deoxyribose. The name of DNA, deoxyribonucleic acid, refers to this sugar, which is found in DNA but not RNA. RNA, or ribonucleic acid, contains the sugar ribose instead.

　　以上便是两道SAT2生物练习题，附答案的相关介绍，大家可以在备考的时候进行适当的应用。想要了解更多关于“SAT2生物考试”的信息，请拨打免费留学培训热线：400-680-5851，或者直接点击网页上的“在线咨询”，与我们的无忧培训专家一对一沟通交流!