BIO 253 FINAL QUESTIONS | TESTED AND PROVEN ANSWERS | LATEST UPDATE 2024/2025 100% (GRADE A+)

BIO 253 FINAL QUESTIONS | TESTED AND PROVEN
ANSWERS | LATEST UPDATE 2024/2025 100%
(GRADE A+)
what are the characteristics of blood


Ans>> *connective tissue with a liquid matrix that transports oxygen and nutrients to all parts of

the body


*made up of liquid part (plasma) and formed elements (blood cells and the platelets)




what are formed elements


Ans>> blood cells (WBC and RBC) and platelets




what are the major components of blood?


Ans>> *55% is plasma (electrolytes, water, proteins)


*45% is RBC


*WBC and platelets are <1%




what is needed for clotting


Ans>> *vitamin K

1

,*fibrin


*platelets


*calcium ions




RBC characteristics


Ans>> *aka erythrocytes


*biconcave disc shape


*1/3 hemoglobin


*lack nuclei and mitochondria


*can't divide




High count of RBC can infer what is happening?


Ans>> infection




low count of RBC can infer what?


Ans>> anemia-> a condition in which the O2-carryinc capacity of the blood is reduced, due to

deficiency of RBC or hemoglobin


2

, anemia


Ans>> lack of a normal number of red blood cells




which vitamins are necessary for RBC production?


Ans>> *vitamin B12


*iron


*hemoglobin




granulocytes


Ans>> *granular cytoplasm and has short life span


*neutrophils


*eosinophils


*basophils




agranulocytes


Ans>> *no noticeable granules

3