Teas 7 science Exam Questions And Answers. Verified and Updated.
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Teas 7 science Exam Questions
And Answers. Verified and Updated.
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 exces...
Teas 7 science Exam Questions
And Answers. Verified and Updated.
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
EXAM STUDY MATERIALS July 24, 2024 1:33:58 PM
,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
EXAM STUDY MATERIALS July 24, 2024 1:33:58 PM
,(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
EXAM STUDY MATERIALS July 24, 2024 1:33:58 PM
, 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
B. Dynein and Kinesine
C. Pepsin and pepsinogen
D. Myosin and Actin - answer✔✔D. Myosin and Actin
Which of the following bases is found in RNA but is absent from DNA?
A. Adenine
B. Uracil
C. Cytosine
D. Thymine - answer✔✔B. Uracil
Which of the following occurs during inhalation?
A. The volume of the thoracic cavity decreases.
B. Air moves from areas of low pressure to areas of high pressure.
C. The ribcage lowers.
D. The diaphragm moves downward. - answer✔✔D. The diaphragm moves downward.
at the same time the ribs move upward and when the thoracic cavity volume increases then
pressure decreases so air moves from high to low
When an ionic salt dissolves in water, the ions CO3^2- and K^+ are formed. Which of the
following is the formula for the salt?
A. K3CO2
B. KCO3
C. K(CO3)2
D. K2CO3 - answer✔✔D. K2CO3
CO3 HAS A NEGATIVE 2 CHARGE = meaning two more electrons then protons
K^+ HAS A POSTIVE 1 CHARGE = meaning it has one more proton then electrons and is
missing one electron
EXAM STUDY MATERIALS July 24, 2024 1:33:58 PM
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