The myoglobin protein, which carries oxygen in muscle cells, has only the first three levels of protein structure. What can you infer about myoglobin?
A. Myoglobin lacks hydrogen bonds
B. Myoglobin is made of nucleic acids
C. Myoglobin is made of only one polypeptide chain
D. Myoglobin is not helical or pleated
Answer: C
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Which of the following statements about transcriptional regulation is incorrect?
A. Regulatory transcription factors are proteins that bind to enhancer DNA sequences and then recruit one or more general transcription factors. B. A typical gene contains only one enhancer sequence. C. General transcription factors are required to initiate the process of transcription. D. General transcription factors bind to the TATA box in the promoter region of a gene. E. RNA polymerase components are recruited to the promoter region by the general transcription factors bound to the TATA box.
Which score suggests a high degree of community similarity?
A) 0.9 B) 9 C) 90 D) 900
Compare and contrast aerobic and anaerobic pathways used by cells to extract energy from organic molecules. Include
the mechanism of ATP formation, the final electron acceptor, and the end products in your comparison. What will be an ideal response?
Three terms associated with the travel of water from the roots up through the vascular tissues of the plant are:
a. adhesion, cohesion and translocation b. adhesion, cohesion and transcription c. cohesion, hybridization and transpiration d. cohesion, adhesion, and transpiration e. transpiration, neutralization and adhesion