SAT2生物練習(xí)題兩道(Biology E).

　　下面是兩道SAT2生物練習(xí)題，是關(guān)于environment環(huán)境方面的。SAT2生物練習(xí)題是大家在備考SAT2生物考試的時(shí)候一定要準(zhǔn)備的題目，可以借此熟悉和了解相關(guān)的SAT2生物詞匯和題型等。下面是這兩道SAT2生物練習(xí)題的詳細(xì)信息。

　　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, deoxyribonucl acid, rers to this sugar, which is found in DNA but not RNA. RNA, or ribonucl acid, contains the sugar ribose instead.

　　以上就是這兩道SAT2生物練習(xí)題的全部?jī)?nèi)容，來(lái)自SAT考試官方網(wǎng)站，后面附有簡(jiǎn)單的答案解析和難度提示。大家可以在備考和SAT2生物考試的時(shí)候多做一些相關(guān)的練習(xí)題目，以便更好的掌握SAT2生物考試。

更多SAT2生物相關(guān)：

SAT2生物練習(xí)題兩道 (Biology-M)

SAT2生物核心詞匯之血脂和磷脂

SAT2生物備考核心概念之糖