In many cases, carbohydrates have the following ratio of elements:
A) carbon, oxygen, and hydrogen in a ratio of 1:2:1.
B) carbon, hydrogen, and nitrogen in a ratio of 1:2:1.
C) carbon, hydrogen, and oxygen in a ratio of 2:1:2.
D) carbon and hydrogen in a ratio of 1:2.
E) carbon, hydrogen, and oxygen in a ratio of 1:2:1.
Answer: E
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In the global assembly line, manufacture and assembly is most likely to take place where
A) taxes are low. B) labor is cheap. C) resources are nearby. D) democracies are solid. E) human rights are highly valued.
During which of the following stages of the cell cycle would a chromosome consist of only a single chromatid?
A) G1 B) G2 C) mitotic prophase D) mitotic metaphase E) All of the choices are correct.
What kind of bonds link amino acids to form the basic sequence of a protein?
A. Disulfide B. Hydrogen C. Ionic D. Peptide E. Noncovalent
The figure included shows the body temperature of lizards versus air temperature in two different habitats-open and shaded forest. Which one of the following conclusions is best supported by these data. 
A. Lizards in shaded forest habitats eat more to maintain their temperature. B. The body temperature of lizards is more constant in open than in shaded forest habitats. C. Lizards are more active in open habitats. D. Lizards sunbathe more in open habitats. E. The negative effect of air temperature on body temperature is less in shaded forest habitats because the temperature varies less there.