TEAS 7 TEST SCIENCE EXAM - EXAMINATION COMPLETE
QUESTIONS AND DETAILED SOLUTIONS LATEST UPDATE
THIS YEAR JUST RELEASED
Question 1: Mg(OH)2 + HCl -> The equation above is unbalanced.
Which of the following shows the molar products of the
neutralization reaction after balancing?
A. 2MgCl2 + H2O
B. 2MgCl2 + 2H2O
C. MgCl2 + H2O
D. MgCl2 + 2H2O
Answer:
D. MgCl2 + 2H2O - Balanced reaction: Mg(OH)2 + 2HCl -> MgCl2 + 2H2O
Question 2: H+ + HCO3- <-> H2O + CO2 Based on the equation
above occurring in blood, which of the following would result if the
reaction is moving in a forward direction?
A. Blood pressure will decrease
B. The blood will become more acidic
C. The blood will become more basic
D. Proton concentration will increase
Answer:
C. The blood will become more basic - Forward direction consumes H+ (acid),
reducing proton concentration, thus blood becomes more basic.
Question 3: Which of the following is the collagen-rich material that
connects muscles to bones?
, A. Tendon
B. Ligament
C. Reticular Tissue
D. Areolar Tissue
Answer:
A. Tendon - Tendons are dense collagen connective tissue connecting muscle to
bone; ligaments connect bone to bone.
Question 4: Which of the following is the function of the spleen in a
healthy adult human?
A. It stores bile produced in the liver
B. It synthesizes platelets
C. It degrades aged red blood cells
D. It is a vestigial organ
Answer:
C. It degrades aged red blood cells - Spleen filters blood, removes old RBCs,
stores WBCs and platelets, immune function.
Question 5: Which of the following is the circular muscle that
regulates the opening and closing of a body aperture?
A. Fossa
B. Fascia
C. Sphincter
D. Valve
Answer:
C. Sphincter (spelled Spincter in source) - Circular muscle that controls
opening/closing of orifice.
, Question 6: Which of the following is a type of specialized
antigen-processing cell that activates T-cells of the immune
system?
A. Plasma Cells
B. Thrombocytes
C. Dendritic Cells
D. Eosinophils
Answer:
C. Dendritic Cells - Professional antigen-presenting cells that activate T-cells.
Question 7: Which of the following causes lactic acid to build up in
muscle cells?
A. The lack of oxygen leading to increased fermentation
B. An excess of carbon dioxide redirected to make lactic acid
C. The decrease in glucose supply to the muscle
D. An increase in blood supply to the muscle
Answer:
A. The lack of oxygen leading to increased fermentation - Anaerobic respiration
produces lactic acid when oxygen is insufficient.
Question 8: Students have collected 60 pill bugs and are interested
in how they behave. The students mark a line down the enter of six
shallow dishes. Then, they place 10 pill bugs in each dish, give in
each half. They scatter the same amount of food evenly throughout
each container and spray the same amount of water into each of
the dishes. Finally, they cover one half of each container with
cardboard to make it dark. They cont and record the number of pill
QUESTIONS AND DETAILED SOLUTIONS LATEST UPDATE
THIS YEAR JUST RELEASED
Question 1: Mg(OH)2 + HCl -> The equation above is unbalanced.
Which of the following shows the molar products of the
neutralization reaction after balancing?
A. 2MgCl2 + H2O
B. 2MgCl2 + 2H2O
C. MgCl2 + H2O
D. MgCl2 + 2H2O
Answer:
D. MgCl2 + 2H2O - Balanced reaction: Mg(OH)2 + 2HCl -> MgCl2 + 2H2O
Question 2: H+ + HCO3- <-> H2O + CO2 Based on the equation
above occurring in blood, which of the following would result if the
reaction is moving in a forward direction?
A. Blood pressure will decrease
B. The blood will become more acidic
C. The blood will become more basic
D. Proton concentration will increase
Answer:
C. The blood will become more basic - Forward direction consumes H+ (acid),
reducing proton concentration, thus blood becomes more basic.
Question 3: Which of the following is the collagen-rich material that
connects muscles to bones?
, A. Tendon
B. Ligament
C. Reticular Tissue
D. Areolar Tissue
Answer:
A. Tendon - Tendons are dense collagen connective tissue connecting muscle to
bone; ligaments connect bone to bone.
Question 4: Which of the following is the function of the spleen in a
healthy adult human?
A. It stores bile produced in the liver
B. It synthesizes platelets
C. It degrades aged red blood cells
D. It is a vestigial organ
Answer:
C. It degrades aged red blood cells - Spleen filters blood, removes old RBCs,
stores WBCs and platelets, immune function.
Question 5: Which of the following is the circular muscle that
regulates the opening and closing of a body aperture?
A. Fossa
B. Fascia
C. Sphincter
D. Valve
Answer:
C. Sphincter (spelled Spincter in source) - Circular muscle that controls
opening/closing of orifice.
, Question 6: Which of the following is a type of specialized
antigen-processing cell that activates T-cells of the immune
system?
A. Plasma Cells
B. Thrombocytes
C. Dendritic Cells
D. Eosinophils
Answer:
C. Dendritic Cells - Professional antigen-presenting cells that activate T-cells.
Question 7: Which of the following causes lactic acid to build up in
muscle cells?
A. The lack of oxygen leading to increased fermentation
B. An excess of carbon dioxide redirected to make lactic acid
C. The decrease in glucose supply to the muscle
D. An increase in blood supply to the muscle
Answer:
A. The lack of oxygen leading to increased fermentation - Anaerobic respiration
produces lactic acid when oxygen is insufficient.
Question 8: Students have collected 60 pill bugs and are interested
in how they behave. The students mark a line down the enter of six
shallow dishes. Then, they place 10 pill bugs in each dish, give in
each half. They scatter the same amount of food evenly throughout
each container and spray the same amount of water into each of
the dishes. Finally, they cover one half of each container with
cardboard to make it dark. They cont and record the number of pill
