NLN PAX SCIENCE EXAM 2023 ACTUAL 300 QUESTIONS
WITH DETAILED VERIFIED ANSWERS WITH
RATIONALE/A+ GRADE ASSURED
What is an atom called if it has a positive charge? - ANSWER: Cation
What is the function of Golgi Bodies? - ANSWER: Storing and releasing proteins
A(n) ___________ is a stable subatomic particle that has a negative charge. -
ANSWER: Electron
What is the oxidation number of an elemental atom? - ANSWER: 0 (zero)
A solution with a pH less than 7 is considered to be what? - ANSWER: Acidic
Which of the following organelles does a unit membrane not surround?
A. Nucleus
B. Lysosomes
C. Mitochondria
D. Ribosomes - ANSWER: D. Ribosomes
Mendel's second law, dihybrid inheritance, is the cross between two parents with
which of the following?
A. Equivalent alleles for two traits
B. Different alleles for two traits
C. Equivalent alleles for one trait
D. Different alleles for one trait - ANSWER: B. Different alleles for two traits
What are the products in the following chemical equation: 2HCI + 2Na --> 2NaCl + H2
- ANSWER: 2NaCl and H2
Reactants are before the arrow, products are after
What is the largest type of biological molecule? - ANSWER: Protein
What type of chemical bond is formed when one atom, chemical or element is joined
to another? - ANSWER: Chemical Bond
To which body system do the joints belong? - ANSWER: Skeletal System
Matter exists in four phases which include: solid, liquid, gas and _______. - ANSWER:
Plasma
What kind of charge do protons have? - ANSWER: Positive
What kind of charge do neurons have? - ANSWER: Neutral
WITH DETAILED VERIFIED ANSWERS WITH
RATIONALE/A+ GRADE ASSURED
What is an atom called if it has a positive charge? - ANSWER: Cation
What is the function of Golgi Bodies? - ANSWER: Storing and releasing proteins
A(n) ___________ is a stable subatomic particle that has a negative charge. -
ANSWER: Electron
What is the oxidation number of an elemental atom? - ANSWER: 0 (zero)
A solution with a pH less than 7 is considered to be what? - ANSWER: Acidic
Which of the following organelles does a unit membrane not surround?
A. Nucleus
B. Lysosomes
C. Mitochondria
D. Ribosomes - ANSWER: D. Ribosomes
Mendel's second law, dihybrid inheritance, is the cross between two parents with
which of the following?
A. Equivalent alleles for two traits
B. Different alleles for two traits
C. Equivalent alleles for one trait
D. Different alleles for one trait - ANSWER: B. Different alleles for two traits
What are the products in the following chemical equation: 2HCI + 2Na --> 2NaCl + H2
- ANSWER: 2NaCl and H2
Reactants are before the arrow, products are after
What is the largest type of biological molecule? - ANSWER: Protein
What type of chemical bond is formed when one atom, chemical or element is joined
to another? - ANSWER: Chemical Bond
To which body system do the joints belong? - ANSWER: Skeletal System
Matter exists in four phases which include: solid, liquid, gas and _______. - ANSWER:
Plasma
What kind of charge do protons have? - ANSWER: Positive
What kind of charge do neurons have? - ANSWER: Neutral
