A.小肠绒毛上皮细胞内有大量的线粒体,为物质运输提供了大量能量 |
B.卵细胞体积较大有利于为胚胎早期发育提供所需养料 |
C.哺乳动物成熟的红细胞表面积与体积之比相对较大,有利于提高气体交换速率 |
D.同一种植物,生长在向阳区的叶绿体比背阴区的叶绿体大且多 |
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2