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Teas 7 Science Exam Questions And Answers With Verified Solutions 100% Correct!!!
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Teas 7 Science Exam Questions And Answers With Verified Solutions 100% Correct!!!
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Teas 7 Science Exam Questions And AnswersWith Verified Solutions 100% Correct!!!
The following diagram summarizes the carbonic acid-bicarbonate ion buffer
system of the blood.
CO2 + H20 < > H2CO3 < > HCO3- + H+
Which of the following equations show the reaction that takes place when there
are excessive protons (H+) in the blood?
A. H2CO3 --> CO2 + H20
B. CO2 + H20 --> H2CO3
C. HCO3- + H+ --> H2CO3
D. H2CO3 --> HCO3- + H+ - ANSWER✔✔ C. HCO3- + H+ --> H2CO3
The following diagram summarizes the carbonic acid-bicarbonate ion buffer
system of the blood.
CO2 + H20 < > H2CO3 < > HCO3- + H+
Which of the following equations show the reaction that takes place when there
are very little protons (H+) in the blood?
A. H2CO3 --> CO2 + H20
B. CO2 + H20 --> H2CO3
C. HCO3- + H+ --> H2CO3
D. H2CO3 --> HCO3- + H+ - ANSWER✔✔ D. H2CO3 --> HCO3- + H+
which of the following describes the process by which solid carbon dioxide (dry
ice) turns directly into carbon dioxide gas?
,A. Evaporation
B. Sublimation
C. Deposition
D. Condensation - ANSWER✔✔ B. Sublimation
which of the following describes why water has a concave, or
downward-curving, meniscus when poured in a glass beaker?
A. The adhesive forces with the glass are greater than the cohesive forces.
B. Glass has a higher density than water.
C. Water has a higher density than glass.
D. A. The cohesive forces with the glass are greater than the adhesive forces. -
ANSWER✔✔ A. The adhesive forces with the glass are greater than the cohesive
forces.
concave meniscus is when molecules are attracted more to the container then
themselves = adhesive forces = downward curving
concave meniscus is when molecules are attracted more to each other then the
container = cohesive forces = upward curving
Which of the following actions does a hydrophilic hormone take to activate a
target cell?
A. The hormone binds to cell-surface receptors of the target cell.
B. The hormone passes through the plasma membrane of a target cell.
C. The hormone binds to a cytosolic receptor in the target cell.
D. The hormone enters a target cell through a transport protein. - ANSWER✔✔ A.
The hormone binds to cell-surface receptors of the target cell.
,hydrophilic = water loving hormones can just bind to the receptors on the outside
of the cell which that binding can change the permeability of the cell making it
more open to activate this target cell (usually its a second messenger system).
This is action is when the endocrine system sends hormones to target cells.
Which of the following best describes adaptive immunity?
A. The initiation of internal defenses, such as phagocytes and natural killer cells.
B. The body's barrier defenses, such as mucous membranes and secretions.
C. A response to specific traits of specific pathogens
D. The initation of the inflammatory response. - ANSWER✔✔ C. A response to
specific traits of specific pathogens
adaptive immunity = specific and targeted
immune immunity = nonspecific and general
(the other three are innate immunity)
Permanent damage to which of the following types of tissues in the spinal cord
will cause paralysis?
A. Bone tissue
B. Nervous tissue
C. Muscle tissue
D. Connective tissue - ANSWER✔✔ B. Nervous tissue
nervous system is all about messages so if you cant send messages you cant move
your muscles since they need the command from the nervous system
Which of the following describes the function of tendons?
A. Tendons attach two bones.
, B. Tendons attach bones to ligaments.
C. Tendons attach skeletal muscles to ligaments.
D. Tendons attach skeletal muscles to bones. - ANSWER✔✔ D. Tendons attach
skeletal muscles to bones.
ligaments is bone to bone
Which of the following is used to indicate mass?
A. mg
B. μm
C. cm^3
D. mL - ANSWER✔✔ A. mg
μm = length
cm^3 = volume
mL = volume
Histones are proteins associated with which of the following?
A. Sperm cells
B. Blood
C. DNA
D. Hair follicles - ANSWER✔✔ C. DNA
condenses the DNA into chromatin
The shortening of a sacromere in skeletal muscle is directly due to the interaction
of which of the following?
A. Acetylcholine and acetylcholinesterase
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