Which of the following would you use to inhibit the contraction of muscle in vitro as a control for an experiment you are conducting? A. a motor protein ATPase inhibitor

B. a drug that increases T-tubule depolarization

C. a drug that increases sarcoplasm Ca2+ concentration

D. a Ca2+-ATPase inhibitor

E. All would inhibit muscle contraction.

Neelaredoxin is a 15-kda protein that is a gene product common in anaerobic prokaryotes. it has superoxide-scavenging activity, and it is constitutively expressed. in addition, its expression is not further induced during its exposure to o2 or h2o2 (silva, g., et al. 2001. j. bacteriol. 183: 4413–4420). which of the following statements best describes neelaredoxin synthesis? a-neelaredoxin is produced at all times; levels are constant even when exposed to o2 or h2o2.b-neelaredoxin is produced at all times; exposure to o2 or h2o2 increases expression.c-neelaredoxin is produced at all times; exposure to o2 or h2o2 decreases or prevents expression.d-neelaredoxin is only produced when there is exposure to o2 or h2o2.

Which of these substances does not protect against invaders in the nonspecific immune response? a. saliva b. mucus c. tears d. urine

This is collection of data made by comparing objects in standard units. in science, the units are metric.