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2008 AP Biology Released Exam?Multiple Choice and Grid-In Questions Free Download

2008 AP 生物選擇題部分免費(fèi)下載

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部分真題預(yù)覽：

1）The amino acid sequence of cytochrome c is exactly the same in humans and chimpanzees. There is a difference of 13 amino acids between the cytochrome c of humans and dogs,? and a difference of 20 amino acids between the cytochrome c of humans and rattlesnakes. Which of the following statements is best supported by these data?

1. Rattlesnakes apparently gave rise evolutionarily to the dog, chimpanzee, and human.
2. Cytochrome c apparently has an entirely different function in rattlesnakes than in mammals, which explains the difference in the number of amino acids
3. Cytochrome c is not found universally in animals
4. Cytochrome c from a rattlesnake could function in a dog, but not in a chimpanzee
5. The human is apparently more closely related to the chimpanzee than to the dog or rattlesnake

2)A parasite may be described as an organism that derives nourishment form another living organism and

1. becomes necessary to the life of the host
2. is neutral in its effect on the host
3. benefits the host nutritionally
4. provides a supportive structure for the host
5. harms the host in the process

5)Countercurrent exchange in the gills of fish is an adaptation that accomplishes which of the following?

1. It limits the amount of blood going to the gills
2. It decreases the thermal gradient between water and blood
3. It improves the ability of blood to dissolve oxygen
4. It maximizes oxygen transfer from water to the blood
5. It maximizes heat retention in the fish

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2008 AP Biology Practice Exam Multiple Choice and Grid-In Questions Free Download

2008 AP 生物模考選擇題部分免費(fèi)下載

此套題共計(jì)時(shí)1小時(shí)20分鐘

共100題

可以使用簡(jiǎn)單的Four-function計(jì)算器（帶有開平方功能）

考試時(shí)會(huì)提供相應(yīng)的方程和等式列表

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