皮皮学，免费搜题
登录
搜题
【单选题】
酶是一类生物催化剂，生物的生命活动离不开酶的催化。下面有关酶的叙述正确的是 [ ]A.
因为酶的催化效率高，故酶促反应速度与酶的浓度无关
B.
有些酶由蛋白质构成，有些酶则是由脂质或核酸构成
C.
酶促反应能释放出更多的能量
D.
RNA聚合酶的最终水解产物是氨基酸
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Refer to Figure 2-6. If this economy put all available resources into the production of bananas, it could produce
A.
200 bananas and also 150 baseballs.
B.
300 bananas and also 100 baseballs.
C.
400 bananas and no baseballs.
D.
It is impossible to know unless we know the quantity of resources available. Figure 2-6
【单选题】【图片】Refer to Figure 4-2. At a price of $4, there is a
A.
surplus of 3 units.
B.
surplus of 6 units.
C.
shortage of 3 units.
D.
shortage of 6 units.
【单选题】Refer to Figure 2-6. What is the opportunity cost to society of the movement from point A to point C?
A.
50 baseballs
B.
100 baseballs
C.
100 bananas
D.
300 bananas Figure 2-6
【单选题】【图片】Refer to Figure 4-2. At a price of $12, there is a
A.
surplus of 1 unit.
B.
surplus of 2 units.
C.
shortage of 1 unit.
D.
shortage of 2 units.
【单选题】Refer to Figure 2 . If the price of the good is $14, then producer surplus is
A.
$17.
B.
$22.
C.
$25.
D.
$28.
【单选题】Refer to Figure 2 . Curve A is U-shaped because of
A.
diminishing marginal product.
B.
increasing marginal product.
C.
the fact that increasing marginal product follows decreasing marginal product.
D.
the fact that decreasing marginal product follows increasing marginal product.
相关题目：