What is the final electron acceptor in the electron transport chain?
a. ubiquinone
b. the Q molecule
c. oxygen
d. cytochrome c
c. oxygen
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The serum bactericidal test (SBT) involves:
a. serial dilutions of antimicrobials in ca-tion-adjusted Mueller-Hinton broth. b. 99.9% reduction in CFU/mL, compared with the organism concentration in the original inoculum. c. using the patient's serum to detect its bacteriostatic and bactericidal activity. d. subculturing the tubes of a completed broth dilution test showing no visible growth.
Which of the following is considered to be a plant behavior?
A. response to sunlight. B. response to plant hormones. C. response to touch.D. response to gravity. E. all of the choices.
The Rho protein is a topoisomerase that helps in untwisting the DNA template
Indicate whether the statement is true or false
As a result of the long refractory period generated by __________, cardiac muscle can not exhibit __________.
A. the influx of calcium ions, tetanus (tetanic contractions) B. the out flow of K+, tetanus (tetanic contractions) C. the influx of Na+, tetanus (tetanic contractions) D. the influx of Ca++, recruitment E. the out flow of K+, recruitment