A normal hemoglobin molecule consists of a tetramer, of four heme and four globin chains, with a molecular weight of 64,500 daltons. Each of the four units can bind a molecule of oxygen for transport to the body ' s tissues. In the image shown below, there are four monomers (2 red globin chains and 2 blue globin chains) which form the entire hemoglobin tetramer structure. The green portions represent the 4 heme groups.

A normal hemoglobin molecule is comprised of the following:

A monoclonal B-cell population (Kappa or Lambda predominant) with expression of CD19, CD20, CD23, and co-expression of CD5 is consistent with which of the following?

Gram positive organisms resist decolorization by ethyl alcohol. The large crystal violet-iodine complex is not able to penetrate the peptidoglycan layer, and is trapped within the cell in gram-positive organisms. Conversely, the outer membrane of gram-negative organisms is degraded and the thinner peptidoglycan layer of gram-negative cells is unable to retain the crystal violet-iodine complex and the color is lost.

What is the purpose of using ethyl alcohol or acetone in the gram stain procedure:

Triglyceride blood concentrations change significantly when you eat, as opposed to relatively stable levels of cholesterol, HDL, or LDL circulating in the blood. Whenever you eat a meal that contains fat, your triglyceride levels rise, which is why it is important to have a patient fast before the sample is collected.

Which of the following lipid results would be expected to be FALSELY elevated on a serum specimen from a non-fasting patient?

Name the comprehensive written safety plan detailing the proper use and storage of hazardous chemicals in the workplace.

Which of the following statements applies to the venipuncture procedure?

Patients who develop severe sepsis or septic shock commonly have increased plasma lactic acid values.

Patients who develop severe sepsis or septic shock commonly have __________ plasma lactic acid values.

Granulocytes are the most granular population; they have the most side scatter of the cell populations that are listed.

Which of these white blood cell populations would have the MOST side scatter when analyzed using flow cytometry?

Isolation and detection of Gardnerella vaginalis from vaginal secretions is improved by which of the following?

Transport media are required for throat culture swabs but not for rapid strep tests.

The correct answer which best fits the characteristics in this question is Mycobacterium tuberculosis.

What is the MOST likely identity of an acid-fast bacilli that showed buff colored, dry, heaped colonies; niacin, nitrate, and urease positive; and took 23 days at 35ºC to grow?

Failure to tightly seal specimens for sweat electrolytes during collection and transport will cause:

Blood Bank; Immunology

Which of the following best describes the primary function of antibodies:

1 SD = 68.3%, 2 SD = 95.5%, 3 SD = 99.7

As defined by a Gaussian distribution curve, what percentage of values would be expected to fall within two standard deviations of the mean:

Free T4 is affected the least by changes in plasma proteins during pregnancy.

Which of the following thyroid function assays is affected least by pregnancy: