Practice Exam 1

Toxic granulation is seen most frequently in

Bacterial infections

Which of the following organisms is best visualized by use of a dark field microscope

Borrelia

All of the following are possible medical complications for an individual diagnosed with metabolic syndrome except

Brain tumor

What are the expected results of the laboratory markers in iron deficiency anemia

Decreased serum iron, increased transferrin, decreased ferritin, decreased percent saturation, and increased total iron binding capacity

All of the following are associated with Hgb C disease, except

Fast mobility of Hgb C at pH 8.6

Which of the following antigens is classified as a Major Histocompatibility Complex Class II antigen (MHCII)

HLA-DR

Xanthocromia in CSF is a characteristic of

Hemorrhage

Which of the following is the correct calculation using the Friedwald calculation for LDL

LDL= total cholesterol - HDL - triglycerides/5

The peroxidase stain is useful in differentiating between which cells

Lymphocytic and granulocytic cells

The regulations that are listed in the Code of Federal Regulations (CFR) should be considered:

The CFR regulations are minimum standards that a facility can exceed

Which of the following statements is correct regarding the bone marrow compartments

the two main compartments of the bone marrow are the vascular sinuses and hematopoietic cords

Which one of the following statements about lead poisoning is false

Serum lead is a good inexpensive screening test for lead toxicity

In healthy individuals, calcitonin is synthesized by which cells in the body?

Thyroid C cells

The normal range for urine pH is

4.5-8.0

Which of the following laboratory results is characteristic for a patient with Von Willebrand disease

Abnormal platelet aggregation response to ristocetin

Many organisms have developed resistance to antibiotics. What mode of resistance has MRSA acquired?

Acquisition of new targets

Bacterial colonies often emit distinct odors associated with foods. Which organism produces an order that resembles fresh apples

Alcaligenes faecalis (odorans)

The laboratory test used to determine the presence of neural tube defects is

Alpha-fetoprotein

An automated method for measuring chloride which generates silver ions in the reaction is called

Amperiometric-coulometric titration

That portion of an enzyme which when separated from its cofactor is called an

Apoenzyme

While serum elevations are NOT generally seen in early stages, which of the following tumor markers are elevated in more advanced stages of breast cancer

CA 15-3 and CA 549

Which of the following bioterrorism agent categories is the easiest to spread, has the ability to cause major harm, panic, and death, and carries the highest level of risk with regard to national security

Category A

An aliquot of AS-1 red blood cells is being prepared from an intact packed cell unit using a sterile connection device. During the process of preparing an aliquot, the sterile device fails and blood drips onto the counter from the product tubing. What should be done with the primary unit?

Change the expiration date to 24 hours

An elevated level of which of the following hormones will inhibit pituitary secretion of adrenocorticotropic hormone (ACTH)

Cortisol

The serum medium and methylene blue stain originally described by Loeffler are both helpful in the identification of:

Corynebacterium diptheriae

A technologist performed urine microscopic testing on a patient who submitted a urine sample following strenuous exercising. Which of the following casts is most likely to be found in this urine sample

Hyaline casts

A secondary immune response is generally associated with which of the following antibodies

IgG

In an autoimmune disorder, conditions influencing the development of a disorder include the following factors with the exception of

Increased discrimination of self from non-self antigens

How does Aspirin (salicylic acid) affect platelet function

Inhibiting cyclooxygenase

Which of the following statements is false regarding troponin as a marker of myocardial infarction (MI)

It rises much sooner after a myocardial infarction than CK-MB

Which of the following steps is the first step of the ethyl acetate concentration procedure

Mix fresh stool specimen with 10% formalin and strain to obtain a sediment

The goal of an ergonomics program is to prevent which of the following disorders or conditions

Musculoskeletal disorders

Which of the following is the most suitable specimen for the isolation of Bordetella pertussis

Nasopharyngeal swab

The bruit reaction for the analysis of serum protein depends on the number of

Peptide bonds

The saccharolytic anaerobe that produces red fluorescing colonies when illuminated with a Wood's lamp is

Prevotella spp

The term TITEr (as it applies to the measurement of antibodies) is best defined as:

Reciprocal of maximum reactive dilution

A copper reduction method is performed on a pediatric specimens in order to check for the presence of

Reducing substances

Which one of these test systems can be used to evaluate the adequacy of fibrinogen in heparinized patients

Reptilase Time

An obese adult with premature arteriosclerosis is seen in the clinic. When her serum is tested no chylomicrons are present, LDL levels are normal, and VLDL are increased. There is an increase in triglycerides and slight increase in cholesterol. Lipoprotein electrophoresis reveals a heavy pre-beta band. She has no skin rash and uric acid is increased. This patient most likely has what type of hyperlipoproteinemia

Type IV

When performing an anti-human globulin (AHG) test, it is important to completely wash the red cells because:

Washing prevents neutralization of the anti-human globulin (AHG) serum

All of the following are factors that will affect migration in gel electrophoresis except

amount of light present

Fresh frozen plasma should be used for which of the following

coagulation deficiencies

a normal hemoglobin molecule is comprised of the following

four heme and four globin chains

If a drug is given at intervals that are the same as its half-life, approximately how long will it take the drug to reach steady state

it will take about 5-7 half-lives to reach steady state

Identify a characteristic of an organ-non specific disorder that distinguishes it from an organ specific disorder

lesions caused by deposition of antigen-antibody immune complexes

Nephlometry involves the measurement of

light scatter