SAN JOSE, Calif.—Lawyers for opposing sides in the trial of former Theranos CEO Elizabeth Holmes are expected to wrap up closing arguments Friday, paving the way for a jury to begin deliberations over criminal charges accusing her of turning her blood-testing startup into a massive scam. The case revolving around Holmes’ meteoric rise to become a self-made billionaire and ensuing downfall has captivated Silicon Valley for the past three months as the long-delayed trial unfolded. That fixation intensified after Holmes made the risky decision to take the witness stand for seven days in front of the jurors who will determine her fate. The jurors, after attorneys wrap up closing arguments that began Thursday, will then be instructed by U.S. District Judge Edward Davila on how to proceed with deliberations. Holmes, 37, faces 11 felony counts of fraud and conspiracy. If convicted, she could receive a sentence of up to 20 …