NEX PRACTICE TEST QUESTIONS &
VERIFIED CORRECT ANSWERS
All of the following should be worn by students as personal protection equipment EXCEPT: -
CORRECT ANSWER Open-toed shoes
Which is used to determine the heat released or absorbed in a chemical reaction? - CORRECT
ANSWER Calorimetry
Which refers to the idea of thinking and asking questions in a logical way to gain trustworthy
information? - CORRECT ANSWER Scientific inquiry
What mathematical concept is often used to determine the accuracy of measurements or the
level of confidence one has in a specific measurement? - CORRECT ANSWER Significant digits
What type of cells often have cell walls outside of the plasma membrane that contain the
molecule peptidoglycan? - CORRECT ANSWER Bacteria
What is the dense central portion of the nucleus? - CORRECT ANSWER Nucleolus
What can be found in plant cells but NOT animal cells? - CORRECT ANSWER Chloroplasts
Which of the following breaks down sugar molecules and produces energy in the form of
molecules of adenosine triphosphate (ATP)? - CORRECT ANSWER Mitochondria
What is the longest stage of the cell cycle (typically more than 90% of the cycle), and involves
the cell growing and making a copy of its DNA? - CORRECT ANSWER Interphase
, In what phase of mitosis do the centromeres divide and the two chromatids separate and get
pulled toward the opposite poles of the cell? - CORRECT ANSWER Anaphase
What type of point mutation inserts a premature stop codon, typically resulting in a non-
functional protein? - CORRECT ANSWER Nonsense mutations
Which of the following is the physical, visual manifestation of genes? - CORRECT ANSWER
Phenotype
What form of genetic drift occurs when one individual or a few individuals populate a new area
such as an island? - CORRECT ANSWER Founder effect
Which is an evolutionary process in which a species branches out, adapts, and fills numerous
unoccupied ecological niches? - CORRECT ANSWER Adaptive radiation
Which explains the development of the organelles of mitochondria in animals and chloroplasts
in plants? - CORRECT ANSWER Endosymbiosis
Humans and what have approximately 7% of their genes in common, suggesting they are not
closely related? - CORRECT ANSWER Bacteria
What is NOT true concerning the fossil record? - CORRECT ANSWER The fossil record clearly
indicates that vertebrates developed before invertebrates.
Which states that "seeds" of life exist throughout the universe and can be transferred from one
location to another? - CORRECT ANSWER Panspermia
VERIFIED CORRECT ANSWERS
All of the following should be worn by students as personal protection equipment EXCEPT: -
CORRECT ANSWER Open-toed shoes
Which is used to determine the heat released or absorbed in a chemical reaction? - CORRECT
ANSWER Calorimetry
Which refers to the idea of thinking and asking questions in a logical way to gain trustworthy
information? - CORRECT ANSWER Scientific inquiry
What mathematical concept is often used to determine the accuracy of measurements or the
level of confidence one has in a specific measurement? - CORRECT ANSWER Significant digits
What type of cells often have cell walls outside of the plasma membrane that contain the
molecule peptidoglycan? - CORRECT ANSWER Bacteria
What is the dense central portion of the nucleus? - CORRECT ANSWER Nucleolus
What can be found in plant cells but NOT animal cells? - CORRECT ANSWER Chloroplasts
Which of the following breaks down sugar molecules and produces energy in the form of
molecules of adenosine triphosphate (ATP)? - CORRECT ANSWER Mitochondria
What is the longest stage of the cell cycle (typically more than 90% of the cycle), and involves
the cell growing and making a copy of its DNA? - CORRECT ANSWER Interphase
, In what phase of mitosis do the centromeres divide and the two chromatids separate and get
pulled toward the opposite poles of the cell? - CORRECT ANSWER Anaphase
What type of point mutation inserts a premature stop codon, typically resulting in a non-
functional protein? - CORRECT ANSWER Nonsense mutations
Which of the following is the physical, visual manifestation of genes? - CORRECT ANSWER
Phenotype
What form of genetic drift occurs when one individual or a few individuals populate a new area
such as an island? - CORRECT ANSWER Founder effect
Which is an evolutionary process in which a species branches out, adapts, and fills numerous
unoccupied ecological niches? - CORRECT ANSWER Adaptive radiation
Which explains the development of the organelles of mitochondria in animals and chloroplasts
in plants? - CORRECT ANSWER Endosymbiosis
Humans and what have approximately 7% of their genes in common, suggesting they are not
closely related? - CORRECT ANSWER Bacteria
What is NOT true concerning the fossil record? - CORRECT ANSWER The fossil record clearly
indicates that vertebrates developed before invertebrates.
Which states that "seeds" of life exist throughout the universe and can be transferred from one
location to another? - CORRECT ANSWER Panspermia
