Which of the following exhibits fourth level (quaternary) structure?
a. amino acids
b. lipids
c. glycogen
d. hemoglobin
e. complex carbohydrate
D
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The first law of thermodynamics states that ________________________
A. combustion engines are 100% efficient B. energy cannot be created or destroyed C. only eukaryotic cells can produce ATP D. there is an increase in disorder in the universe over time E. the universe becomes more orderly over time
In a certain species of animal, 33% of the bases in its DNA are A. What percent of the bases are C?
A) 8.5% B) 17% C) 33% D) 34%
The abundant presence of ammonite fossils in a large area indicates that the area was once part of an ocean.
a. true b. false
Which structure in the cell shown in Figure 7-2 above stores materials, such as water, salts, proteins, and carbohydrates?
A. Structure A B. Structure B C. Structure C D. Structuree DGolgi Apparatus B. mitochondrion