Body Fluids and Blood Grouping

Body Fluids and Blood Grouping

Body Fluids and Blood Grouping Quiz Crafted by –

Ashi Yadav

Scientific Officer

Sherlock Institute of Forensic Science India Pvt. Ltd, New Delhi


Introduction to Body Fluids and Blood Grouping

When we talk about ABO blood types, we’re talking about different types of sugars that are stuck to the surface of red blood cells. These sugars are called antigens. Our ABO blood type comes from a stretch of DNA (called the ABO gene) that has the instructions to make these different sugars. Depending on which instructions your DNA has, you’ll make a certain combination of these antigens - this creates your blood type! But here’s a twist: our blood cells aren’t the only cells reading the ABO gene. There are other parts of our body that can make these antigens too!

When red blood cells make antigens, they also need to read a gene called FUT1. Together, ABO and FUT1 make a “sticky” antigen. This antigen attaches to the surface of the red blood cells. But when other cells make antigens, they read a different gene called FUT2. Together, ABO and FUT2 make a “soluble” antigen. This means the antigens can float around on their own – they don’t need to be stuck to a cell’s surface. This includes the cells in our skin that make sweat, the cells in our mouth that make saliva, and the cells in our airway and digestive system that make mucus.

Let's look at the questions and their answers

Ques 1. Which is the blood component that is straw coloured liquid and viscous?

a) Plasma

b) RBCs

c) Platelets

d) Granulocytes

Answer-a) Plasma

Ques 2. Assertion (A): Seminal stains on cloth should be collected, after drying, at room temperature.

Reason (R): It causes disintegration of seminal stain.

a) Both (A) and (R) are true

b) Both (A) and (R) are false

c) (A) is true, but (R) is false

d) (A) is false, but (R) is true

Answer- c) (A) is true, but (R) is false

Ques 3. Semen sample having no sperms is called

a) Oligospermic                                                     

b) Aspermic

c) Histospermic                                                       

d) Hematospermic

Answer- b) Aspermic

Ques 4. An Rh incompatibility between mother and fetus can occur if

a) Only mother is Rh(–)

b)  Fetus is Rh(+)

c) Pregnancy is second or later

d) All of the above                                                     

Answer- d) All of the above

Ques 5. High concentration of the enzyme amylase is found in which of the physiological fluids?

a) Sweat                                                     

b) Semen

c) Urine                                                       

d) Saliva

Answer- d) Saliva

Ques 6. The most reliable test for detection of semen in the absence of spermatozoa is

a)  Acid phosphatase

b)  Florence test

c)  Prostate specific antigen

d)  Esterase

Answer- c) Prostate specific antigen

Ques 7. Detection of vaginal fluid is done by which test?

a) Amylose azure test

b) Griess urea nitrate

c) Rapid stain identification test

d) Schiff test

Answer- d) Schiff test

Ques 8. The person having ‘Bombay Blood Group’ has the following in his red blood cells:

a) ABH antigens

b) HLA antigens

c) mt DNA

d) Myoglobin                                                     

Answer- c) mt DNA

Ques 9. Technique used for examination of sweat:

a) Gas chromatographic technique

b) Liquid chromatographic technique

c) Paper chromatographic technique                                           

d) All of the above

Answer- d) All of the above

Ques 10. Normal specific gravity of the urine is

a) 1.002 to 1.012                                                     

b) 1.005 to 1.030

c) 1.004 to 1.014                                                

d) 1.004 to 1.014

Answer- b) 1.005 to 1.030

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