PSB practice test- science
what is the name for any substance that stimulates the production for antibodies?
a. collagen
b. hemoglobin
c. lymph
d. antigen - ✔✔d. antigen
which of the following correctly lists the c
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PSB practice test- science
what is the name for any substance that stimulates the production for antibodies?
a. collagen
b. hemoglobin
c. lymph
d. antigen - ✔✔d. antigen
which of the following correctly lists the cellular hierarchy from the simplest to the most
complex structure? - ✔✔cell, tissue, organ, organ system, organism
if a cell is placed in a hypertonic solution what will happen to tell cell? - ✔✔it will shrink
which group of major parts and organs make up the immune system? - ✔✔lymphatic system,
spleen, tonsils, thymus, and bone marrow
the rate of a chemical reaction depends all on the following except:
a. temperature
b. surface area
c. presence of catalysts
d. amount of mass lost - ✔✔d. amount of mass lost
What is the law: For a given mass and constant temperature, an inverse relationship exists
between the volume and pressure of a gas.
a. Ideal gas law
b. Boyle's law
c. Charle's law
d. Stefan-Boltzmann law - ✔✔b. Boyle's law
Which of the following statements correctly compares prokaryotic and eukaryotic cells?
a. prokaryotic cells have a true nucleus, eukaryotic cells do not.
b. both have a membrane
c. Prokaryotic cells do not contain membrane-bound organelles, eukaryotic cells do
d. prokaryotic cells are more complex than eukaryotic cells - ✔✔c. Prokaryotic cells do not
contain membrane-bound organelles, eukaryotic cells do
What is role of ribosomes?
a. make proteins
b. waste removal
c. transport
d. storage - ✔✔a. make proteins
If an organism is Aa,Bb which of the following combinations in the gametes is impossible?
a. AB
b. aa
c. aB
d. Ab - ✔✔b. aa
What is the oxidation number of hydrogen in CaH2?
a. +1
b. -1
c. 0
d. +2 - ✔✔b. -1
Which hormone stimulates milk production in the breasts during lactation?
a. norepinephrine
b. antidiuretic hormone
c. prolactin
d. oxytocin - ✔✔c. prolactin
What is the typical result of mitosis in humans?
a. two diploid cells
b. two haploid cells
c. four diploid cells
d. four haploid cells - ✔✔a. two diploid cells
Which of the following does not exist as a diatomic molecule?
a. boron
b. fluorine
c. oxygen
d. nitrogen - ✔✔a. boron
Which of the following structures has the lowest blood pressure?
a. arteries
b. arteriole
c. venule
d. vein - ✔✔d. vein
How does water affect the temperature of a living thing?
a. Water increases temperature
b. Water keeps temperature stable
c. Water decreases temperature
d. Water does not affect temperature - ✔✔b. water keeps temperature stable
What is another name for aqueous HI? - ✔✔hydriodic acid
Which of the four heart chambers is most muscular? - ✔✔left ventricle
which of the following in not a product of the krebs cycle?
a. carbon dioxide
b. oxygen
c. ATP
d. energy carriers - ✔✔b. oxygen
what is the name for the reactant that is entirely consumed by the reaction? - ✔✔limiting reactant
which part of the brain interprets sensory information? - ✔✔cerebrum
what kind of bond connects sugars and phosphates in DNA? - ✔✔covalent
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