Unity and Diversity A.4 Cell Structure (id: 9c80d3de1)

本题目来源于试卷: Unity and Diversity A.4 Cell Structure，类别为 IB生物学

[单选题]
The electron micrograpc3 zq .;ipk ,0(l;migv-pf ead-3)fr0 / lkijf/rvzhn h shows a sarcomere, the smallest functional unit of striated muscle tissue. Whnvfr/ik)hfj z r/3l0 -at is the actual length between the two Z lines?

A. 10 µm
B. 1 mm
C. 1 cm
D. 1 µm


参考答案:  D


本题详细解析:
The length between the two Z lines ./eh5 4re;nt2sqb v -ov)/ijzql- lpyis 4.5 cm, which is equivalent to 45000 µm. Actual length is calculated using the equation; image size divided by magnification. 45000 µm ÷ 45000 x = 1 µm. Choice D is corry /s;iz .n)vr/4 eqvb-tjl-q 5e 2pholect.Choices A, B and C are incorrect.

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