BIOS 255 EXAM 1 ( UPDATED 2025 ) | QUESTIONS WITH 100% VERIFIED ANSWERS AND COMPREHENSIVE RATIONALES | GRADED A+

BIOS 255 EXAM 1


• antibodies
Answer: carried in plasma

• blood type A
Answer: antigen A and anti-B antibodies

• blood type B
Answer: antigen B and anti-A antibodies

• blood type AB
Answer: both antigen AB, not antibodies

• blood type O
Answer: no antigens, anti A and B antibodies

• Type AB is the universal
Answer: recipient (no antibodies)

• type O is the universal
Answer: donor (no antigens)

• hemoglobin recycling
Answer:
Phagocytes break hemoglobin into components
Globular proteins to amino acids
Heme to biliverdin
Iron

• breakdown and disposal of heme
Answer: biliverdin > bilirubin > bile

• granulocytes
Answer: neutrophils, eosinophils, basophils

• agranulocytes
Answer: lymphocytes and monocytes

• neutrophils
Answer: first WBC to arrive at infectionmost numerous WBC

, • What do neutrophils do?
Answer: engulf bacteria

• Eosinophils
Answer: parasitic worms, inflammatory chemicals
• eosinophils functions
Answer: fended against parasitic worm infections

• basophils
Answer: allergic reactions, secrete histamine and heparin

• Basophils secrete
Answer: heparin and histamine

• Monocytes
Answer: phagocytize bacteria and dead cells

• Lymphocytes
Answer: T cells and B cellsimportant in immunity

• What do T cells do?
Answer: attack microbes, tumor cells

• What do B cells do?
Answer: produce antibodies

• Neutrophil percentage
Answer: 60%

• lymphocyte percentage
Answer: 30%

• monocyte percentage
Answer: 8%

• eosinophil percentage
Answer: 3%

• basophils percentage
Answer: >1%

• lymphoid stem cells