HESI BIOLOGY EXAM QUESTIONS
AND ANSWERS
within the biologic hierachic system of organization, which of the following is the
LEAST inclusive? - Answer- Species
Hypothesis - Answer- In the scientific process, which of the following is a statement
or explanation of certain events or happenings?
Why is polarity the most important characteristic of water? - Answer- hydrogen
bonding, a high specific heat value, and it's versatile solvent properties.
Cohesion - Answer- The ability of a molecule to stay bonded or attached to another
molecule of the same substance
Adhesion - Answer- The ability of water to bond to or attract other molecules or
substances
Carbohydrates have many functions and serve many different purposes, most
important are - Answer- Storage, structure, and energy
Long chains, or polymers, of sugar - Answer- Carbohydrates
Athletes are often concerned with the question of what they need in their diets to
increase muscle mass and strength. What biologic molecule would you recommend
that would accomplish this? - Answer- Protein
what is the typical result of mitosis in humans - Answer- two diploid cells
what kind of bond connects sugar and phosphate in DNA - Answer- Covalent bonds
how are lipids different than other organic molecules - Answer- they are not water
soluble
during which phase is the chromosomes number reduced from diploid to haploid -
Answer- meiosis I
what is the longest phase in the life of a cell - Answer- interphase
which of the following is necessary for cell diffusion - Answer- water
which part of aerobic respiration uses oxygen - Answer- electron transport system
what is the name of the process by which a bacterial cell splits into two new cells -
Answer- fission
how many different types of nucleotides are there in DNA - Answer- four
AND ANSWERS
within the biologic hierachic system of organization, which of the following is the
LEAST inclusive? - Answer- Species
Hypothesis - Answer- In the scientific process, which of the following is a statement
or explanation of certain events or happenings?
Why is polarity the most important characteristic of water? - Answer- hydrogen
bonding, a high specific heat value, and it's versatile solvent properties.
Cohesion - Answer- The ability of a molecule to stay bonded or attached to another
molecule of the same substance
Adhesion - Answer- The ability of water to bond to or attract other molecules or
substances
Carbohydrates have many functions and serve many different purposes, most
important are - Answer- Storage, structure, and energy
Long chains, or polymers, of sugar - Answer- Carbohydrates
Athletes are often concerned with the question of what they need in their diets to
increase muscle mass and strength. What biologic molecule would you recommend
that would accomplish this? - Answer- Protein
what is the typical result of mitosis in humans - Answer- two diploid cells
what kind of bond connects sugar and phosphate in DNA - Answer- Covalent bonds
how are lipids different than other organic molecules - Answer- they are not water
soluble
during which phase is the chromosomes number reduced from diploid to haploid -
Answer- meiosis I
what is the longest phase in the life of a cell - Answer- interphase
which of the following is necessary for cell diffusion - Answer- water
which part of aerobic respiration uses oxygen - Answer- electron transport system
what is the name of the process by which a bacterial cell splits into two new cells -
Answer- fission
how many different types of nucleotides are there in DNA - Answer- four
