Genetic sequences may be useful in predicting protein structure because
A. there is a high statistical frequency of specific amino acids within a given secondary structure
B. the folding of the protein is based on how the mRNA folds.
C. the physical and energetic properties of the DNA influence protein folding.
D. knowing what specific codons are used for each amino acid in the protein can help predict its structure.
A
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A cladogram can be viewed as “sets within sets” of derived traits. Which features distinguish the clade containing
mice and humans from the other clades in this cladogram?
a. multicellular with legs b. multicellular with hair c. multicellular with a backbone d. multicellular e. multicellular with a backbone, legs and hair
Which of the following is NOT a member of the
Ascomycetes? a yeast b. black bread mold c. truffle d. Aspergillus e. Neurospora
The plants and animals now present on acreage from which the trees were removed ten years earlier
represent a. primary succession. b. a climax forest. c. pioneer species. d. secondary succession. e. species introductions.
For a particular chemical reaction, the enthalpy of the reactants is -400 kJ. The enthalpy of the products is -390 kJ. The entropy of the reactants is 0.2 kJ/K. The entropy of the products is 0.3 kJ/K. The temperature of the reaction is 25 degrees Celsius. What can you conclude about this reaction?
A. it is a redox reaction B. It is being catalyzed by an enzyme C. It is endergonic D. It is exergonic