PLTW PBS 2026 PRINCIPLES OF
BIOMEDICAL SCIENCE ASSESSMENT
QUESTIONS SOLUTIONS FINAL STUDY
GUIDE
◉ Blood Plasma
Answer: The pale yellow fluid portion of whole blood that consists of
water and its dissolved constituents including, sugars, lipids,
metabolic waste products, amino acids, hormones, and vitamins.
◉ Erythrocytes (Red Blood Cells)
Answer: Any of the hemoglobin-containing cells that carry oxygen to
the tissues and are responsible for the red color of vertebrate blood.
◉ Hematocrit
Answer: The percent of the volume of whole blood that is composed
of red blood cells as determined by separation of red blood cells
from the plasma usually by centrifugation.
◉ Leukocytes (White Blood Cells)
, Answer: Any of the blood cells that are colorless, lack hemoglobin,
contain a nucleus, and include the lymphocytes, monocytes,
neutrophils, eosinophils, and basophils.
◉ Sickle Cell Disease
Answer: Individuals who are homozygous for the gene controlling
hemoglobin S. The disease is characterized by the destruction of red
blood cells and by episodic blocking of blood vessels by the
adherence of sickle cells to the vascular endothelium.
◉ Thrombocytes (Platelets)
Answer: A minute colorless anucleate disklike body of mammalian
blood that assists in blood clotting by adhering to other platelets and
to damaged epithelium.
◉ Amino Acid
Answer: An organic monomer which serves as a building block of
proteins.
◉ Anticodon
Answer: A triplet of nucleotide bases in transfer RNA that identifies
the amino acid carried and binds to a complementary codon in
messenger RNA during protein synthesis at a ribosome.
BIOMEDICAL SCIENCE ASSESSMENT
QUESTIONS SOLUTIONS FINAL STUDY
GUIDE
◉ Blood Plasma
Answer: The pale yellow fluid portion of whole blood that consists of
water and its dissolved constituents including, sugars, lipids,
metabolic waste products, amino acids, hormones, and vitamins.
◉ Erythrocytes (Red Blood Cells)
Answer: Any of the hemoglobin-containing cells that carry oxygen to
the tissues and are responsible for the red color of vertebrate blood.
◉ Hematocrit
Answer: The percent of the volume of whole blood that is composed
of red blood cells as determined by separation of red blood cells
from the plasma usually by centrifugation.
◉ Leukocytes (White Blood Cells)
, Answer: Any of the blood cells that are colorless, lack hemoglobin,
contain a nucleus, and include the lymphocytes, monocytes,
neutrophils, eosinophils, and basophils.
◉ Sickle Cell Disease
Answer: Individuals who are homozygous for the gene controlling
hemoglobin S. The disease is characterized by the destruction of red
blood cells and by episodic blocking of blood vessels by the
adherence of sickle cells to the vascular endothelium.
◉ Thrombocytes (Platelets)
Answer: A minute colorless anucleate disklike body of mammalian
blood that assists in blood clotting by adhering to other platelets and
to damaged epithelium.
◉ Amino Acid
Answer: An organic monomer which serves as a building block of
proteins.
◉ Anticodon
Answer: A triplet of nucleotide bases in transfer RNA that identifies
the amino acid carried and binds to a complementary codon in
messenger RNA during protein synthesis at a ribosome.
