Haemocytometer

A haemocytometer is a special counting chamber designed for counting _____ ____.

(a)  

What squares are used when counting red blood cells?

• The corner squares

• The middle top square and middle bottom square

• The 3 squares on the left and the 3 squares on the right

• The middle square

What is the dilution factor for red blood cells?

• 1:300

• 1:200

• 1:100

• 1:50

What is the dilution factor for white blood cells?

• 1:100

• 1:50

• 1:50

• 1:20

• 1:10

Where are white blood cells counted?

• The middle square

• The 3 left squares and 3 right squares

• The squares in the corners

• The 3 top squares and 3 bottom squares

In sickle cell anemia, the basis of the malfunction of the hemoglobin molecule is:

• incorrect secondary structure

• substitution of a single amino acid.

• faulty binding of the heme groups.

• reduced affinity for oxygen.insufficient iron in the diet.

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-2

Hemoglobin takes up the number of molecules of oxygen

• 1

• 2

• 4

• 6

Carboxyhemoglobin is formed by

• CO

• CO2

• HCO3

• HCN

Which antibodies are present in the plasma of a person with type AB blood?

• Rh antibodies

• Type O antibodies

• Type A antibodies

• Type B antibodies

• No antibodies are present.

The major constituent of hemoglobin receives Iron from

• Liver

• Kidneys

• Lungs

• Chyme