True or false: Most proteins will retain metabolic activity when denatured
A. true B. false
Answer: B
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Intermediate filaments:
A. have a diameter that is larger than a microfilament, but smaller than a microtubule. B. play an important role in maintaining cell shape. C. plan an important role in preventing skin from tearing by shear stress. D. undergo little change in length in comparison to microtubules and microfilaments. E. All of these choices are correct.
Which of the following are problems associated with intensive irrigation? I) mineral runoff II) over fertilization III) aquifer depletion IV) soil salinization
A) only I and II B) only I, III, and IV C) only III and IV D) I, II, III, and IV
Which of the following is not a sign of sepsis?
A) rapid heart rate (more than 90 beats per minute) B) body temperature above 101°F (38.3°C) or below 96.8°F (36°C) C) increased respiratory rate (more than 20 breaths per minute) D) dilated pupils E) increased white blood cell count
Which choice regarding DNA replication is true?
A) Mistakes in DNA replication are a mechanism of evolutionary change. B) A change in amino acid sequence is inherent in mistakes in DNA replication. C) Mistakes in DNA replication never occur. D) Errors in DNA replication are detrimental to the survival of a species. E) Mistakes in DNA replication are a direct response to the organism's environmental cues.