NEWEST 2024/2025 HESI A2 BIOLOGY EXAM QUESTION
AND ANSWERS CORRECT {100%VERIFIED}
1. kingdom largest and most inclusive category
2. species most restrictive category
3. hierarchic orga- kingdom, phylum, class, order, family, genius, species
nizational sys-
tem
4. steps to an ex- 1. observation
periment 2. hypothesis
3. experiment
4. conclusion
5. observation data is observed and recorded/ previous data is studied
6. hypothesis a statement or explanation of certain events or happen-
ings
7. experiment repeatable procedure of gathering data to support or re-
fute the hypothesis
8. conclusion where the data and its significance are fully explained
9. aqueous water based
10. water molecule two hydrogen atoms covalently bonded to one oxygen
consists of atom
11. most significant the polarity of its bonds that allows for hydrogen bonding
aspect of water is between molecules
12. specific heat the amount of heat necessary to raise the temperature of
1 gram of that molecule 1 degree celsius
13. water has high the extent of hydrogen bonding between water molecules,
specific heat due which allows waters to resist shifts in temperature (ability
to of oceans or large bodies of water to stabilize climates)
14. cohesion
, HESI A2 BIOLOGY EXAM
the ability of a molecule to stay bonded or attracted to
another molecule of the same substance (water running
together on a newly waxed car)
15. adhesion the ability of water to bond to or attract other molecules or
substances (when water is sprayed onto the wall, some of
it sticks to the wall)
16. when water lattice crystals; causing the molecules to spread apart,
freezes it forms resulting in the phenomenon of ice floating
17. polarity of water versatile solvent (used to dissolve a number of different
allows it to act as solvents)
an
18. carbohydrates longs chains, or polymers of sugar
-used for storage, structure, and energy
-the backbone of important molecules such as DNA and
RNA
19. lipids known as fats, but specifically they are fatty acids, phos-
pholipids, and steroids
20. fatty acids Vary greatly but simply are grouped into two categories:
saturated and unsaturated
21. saturated fats contain no double bonds in their hydrogen tail
-solids at room temp
-lead to cardiovascular problems associated with diets
22. unsaturated fats have one or more double bonds
-liquid at room temperature
23. phospholipids -consist of two fatty acids of varying length bonded to a
phosphate group
-phosphate group is charged and therefore polar and sol-
uble in water
24. steroids -component of membranes
-precursors to significant hormones and drugs
AND ANSWERS CORRECT {100%VERIFIED}
1. kingdom largest and most inclusive category
2. species most restrictive category
3. hierarchic orga- kingdom, phylum, class, order, family, genius, species
nizational sys-
tem
4. steps to an ex- 1. observation
periment 2. hypothesis
3. experiment
4. conclusion
5. observation data is observed and recorded/ previous data is studied
6. hypothesis a statement or explanation of certain events or happen-
ings
7. experiment repeatable procedure of gathering data to support or re-
fute the hypothesis
8. conclusion where the data and its significance are fully explained
9. aqueous water based
10. water molecule two hydrogen atoms covalently bonded to one oxygen
consists of atom
11. most significant the polarity of its bonds that allows for hydrogen bonding
aspect of water is between molecules
12. specific heat the amount of heat necessary to raise the temperature of
1 gram of that molecule 1 degree celsius
13. water has high the extent of hydrogen bonding between water molecules,
specific heat due which allows waters to resist shifts in temperature (ability
to of oceans or large bodies of water to stabilize climates)
14. cohesion
, HESI A2 BIOLOGY EXAM
the ability of a molecule to stay bonded or attracted to
another molecule of the same substance (water running
together on a newly waxed car)
15. adhesion the ability of water to bond to or attract other molecules or
substances (when water is sprayed onto the wall, some of
it sticks to the wall)
16. when water lattice crystals; causing the molecules to spread apart,
freezes it forms resulting in the phenomenon of ice floating
17. polarity of water versatile solvent (used to dissolve a number of different
allows it to act as solvents)
an
18. carbohydrates longs chains, or polymers of sugar
-used for storage, structure, and energy
-the backbone of important molecules such as DNA and
RNA
19. lipids known as fats, but specifically they are fatty acids, phos-
pholipids, and steroids
20. fatty acids Vary greatly but simply are grouped into two categories:
saturated and unsaturated
21. saturated fats contain no double bonds in their hydrogen tail
-solids at room temp
-lead to cardiovascular problems associated with diets
22. unsaturated fats have one or more double bonds
-liquid at room temperature
23. phospholipids -consist of two fatty acids of varying length bonded to a
phosphate group
-phosphate group is charged and therefore polar and sol-
uble in water
24. steroids -component of membranes
-precursors to significant hormones and drugs
