Medical lab. Science study at home

03/02/2025

What information must be put on the specimen label?
A. Type of specimen
B. Client's name & address
C. Date & Time
D. All of the above

27/01/2025

When collecting a specimen, when should you wash your hands?
A. Only before
B. Before and after
C. Only after
D. None of the above

01/01/2025

In absorption spectrophotometry:
A. Absorbance is directly proportional to
transmittance
B. Percent transmittance is directly proportional to
concentration
C. Percent transmittance is directly proportional to
the light path length
D. Absorbance is directly proportional to
concentration

26/12/2024

- Phagocytosis is a process by which certain cells, known as phagocytes, engulf and digest foreign particles, cellular debris, or microorganisms.

- This process is essential for the immune system, helping to protect the body from infections & cleaning up damaged tissues.

- The steps:-

1. Recognition: The phagocyte detects a foreign particle through specific receptors on its membrane.

2. Engulfment: The phagocyte's membrane deforms to surround the particle, enclosing it in a vesicle called a phagosome.

3. Digestion: The phagosome then fuses with lysosomes, which contain digestive enzymes, forming a phagolysosome where the particle is broken down.

4. Excretion: The indigestible residues are expelled from the cell.

19/12/2024

01/04/2024

Which enzyme is responsible for the conjugation of bilirubin?
A. β-Glucuronidase
B. UDP-glucuronyl transferase
C. Bilirubin oxidase
D. Biliverdin reductase

11/10/2023

Why do Bacteria Stain Differently?
stain either Gram-positive or Gram-negative on the basis of differences in their cell wall composition
positives have a thick peptidoglycan layer & large amounts of teichoic acids
negatives have a thin peptidoglycan layer & an outer membrane composed of a lipid bilayer
outer membrane of Gram-negative organisms is damaged by the decolorizer (organic solvents)

10/10/2023

Choose the best answer!
____________is the name of anticoagulant in this test tube and it is the best anticoagulant for many hematological tests like cell counts & morphological studies.
A. Sodium Citrate
B. Heparin
C. EDTA
D. Double Oxalate

20/09/2023

Which of the following blood group is considered a universal donor?
a) A
b) B
c) AB
d) O