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PSB Natural Science Exam Study Questions and Answers
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PSB Natural Science Exam Study Questions and Answers What is the name for any substance that stimulates the production of antibodies? - Ans:- antigen List the cellular hierarchy from the simplest to the most complex structure. (organism, organ, organ system, cell, tissue) - Ans:-cell, tissue, ...

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  • October 15, 2024
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GRACEAMELIA 2024/2025 ACADEMIC YEAR ©2024. ALL RIGHTS
RESERVED. FIRST PUBLISH OCTOBER, 2024



PSB Natural Science Exam Study
Questions and Answers

What is the name for any substance that stimulates the production of antibodies? - Ans:✔✔-

antigen


List the cellular hierarchy from the simplest to the most complex structure.


(organism, organ, organ system, cell, tissue) - Ans:✔✔-cell, tissue, organ, organ system,

organism


If a cell is placed in a hypertonic solution what will happen to the cell? - Ans:✔✔-it will shrink


Which group of major parts and organs make up the immune system? - Ans:✔✔-lymphatic

system, spleen, tonsils, thymus, and bone marrow


The rate of a chemical reaction depends on all the following except


a. temperature


b. surface area


c. presence of catalyst


d. amount of mass loss - Ans:✔✔-d. amount of mass loss


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,GRACEAMELIA 2024/2025 ACADEMIC YEAR ©2024. ALL RIGHTS
RESERVED. FIRST PUBLISH OCTOBER, 2024

Which of the answer choices provided best defines the following statement? 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. Charles' Law


d. Stefan-Boltzmann Law - Ans:✔✔-b. Boyle's Law


Which of the following statements correctly compares prokaryotic and eukaryotic cells?


a. Prokaryotic cells have a true nucleus, eukaryotic cells don not.


b. Both prokaryotic and eukaryotic cells have a membrane.


c. Prokaryotic cells do not contain membrane-bound organelles, eukaryotic cells do.


d. Prokaryotic cells are more complex than eukaryotic cells. - Ans:✔✔-c. Prokaryotic cells do not

contain membrane-bound organelles, eukaryotic cells do.


What is the role of ribosomes?


a. make proteins


b. waste removal


c. transport


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d. storage - Ans:✔✔-a. make proteins


If an organism is AaBb, which of the following combinations in the gametes is impossible?


a. AB


b. aa


c. aB


d. Ab - Ans:✔✔-b. aa


What is the oxidation number of hydrogen in CaH2?


a. +1


b. -1


c. 0


d. +2 - Ans:✔✔-b. -1


Which hormone stimulates milk production in the breasts during lactation? - Ans:✔✔-Prolactin


What is the typical result of mitosis in humans? - Ans:✔✔-two diploid cells


Which of the following does NOT exist as a diatomic molecule?


a. boron


b. fluorine


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, GRACEAMELIA 2024/2025 ACADEMIC YEAR ©2024. ALL RIGHTS
RESERVED. FIRST PUBLISH OCTOBER, 2024

c. oxygen


d. nitrogen - Ans:✔✔-a. boron


Which of the following structures has the lowest blood pressure?


a. arteries


b. arteriole


c. venule


d. veins - Ans:✔✔-d. veins


How does water affect the temperature of a living thing? - Ans:✔✔-Water keeps temperature

stable


What is another name for aqueous HI?


a. hydroiodate acid


b. hydrogen monoiodide


c. hydrogen iodide


d. hydriodic acid - Ans:✔✔-d. hydriodic acid


Which of the heart chambers is the most muscular?


a. left atrium



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