1.쉬움
Who first used the word "cells" after looking at thin slices of cork under a microscope?
- ALouis Pasteur
- BRobert Hooke
- CCharles Darwin
- DGregor Mendel
2.쉬움
What is a haploid cell?
- AA cell with two sets of chromosomes
- BA cell with no nucleus
- CA cell with an extra chromosome
- DA cell with one set of chromosomes
3.쉬움
Which sex chromosomes does a typical human male have?
- AXX
- BYY
- CX only
- DXY
4.보통
Why do the palisade cells near the top surface of a leaf contain many chloroplasts?
- AThey carry sugars from the leaves down to the roots
- BThey get the most light and do most of the photosynthesis
- CThey protect the leaf from insects and strong winds
- DThey store most of the plant's water for dry periods
5.보통
A study finds a positive correlation between hours of exercise and lung capacity. What does this mean?
- AThere is no link between the two variables
- BAs exercise increases, lung capacity tends to increase
- CAs exercise increases, lung capacity tends to decrease
- DExercise has been proven to cause higher lung capacity
6.보통
Why do many plants close their stomata on hot, dry days?
- ATo take in more carbon dioxide
- BTo reduce water loss
- CTo release more oxygen
- DTo speed up photosynthesis
7.어려움
Starch and cellulose are both made of glucose. Why can humans digest starch but not cellulose?
- ACellulose contains no glucose units at all, only fructose
- BHumans lack an enzyme that breaks the bonds in cellulose
- CCellulose dissolves in water but starch does not
- DStarch is a protein, and cellulose is a lipid
8.어려움
The wings of a bat and the wings of a butterfly are used for flying but have very different structures. What are they called, and what does this show?
- AHomologous structures, which have the same bones inside
- BAnalogous structures, which evolved separately for the same job
- CVestigial structures, which no longer have a function
- DHomologous structures, which were inherited from a shared ancestor
정답표
- 1. B · Robert Hooke
- 2. D · A cell with one set of chromosomes
- 3. D · XY
- 4. B · They get the most light and do most of the photosynthesis
- 5. B · As exercise increases, lung capacity tends to increase
- 6. B · To reduce water loss
- 7. B · Humans lack an enzyme that breaks the bonds in cellulose
- 8. B · Analogous structures, which evolved separately for the same job
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