Which of the following methods can be used to reduce experimental bias? 

In X-ray crystallography, which is NOT a solution to the phase problem?

A technique that involves freezing a sample and taking thousands of images and merging them together is

A 50-year-old female presents to the emergency department with vomiting and “the worst headache of her life”. A head CT shows no acute findings. Based on your history and physical, you decided to perform a lumbar puncture. The lab reports elevated red blood cells in all tubes. Your definitive diagnosis is subarachnoid hemorrhage. This hemorrhage is found between which two protective coverings of the brain?

What annealing temperature would you use in a PCR reaction using two primers with Tms of 50 °C and 54 °C?

Which of the following is true regarding steroid hormones?

A histologic section shows an organ with a large amount of lymphatic tissue, including nodules with germinal centers and a deeply infolded mucosal surface formed by a stratified squamous epithelium. Which of the following best describes this section?

Which of the following involves studying proteins inside cells with antibodies?

A solution is 6 µM, which is equal to

Which type of restriction enzyme digestion guarantees the directionality of an insert?