Hesi biology (NURSE HUB Practice tests 1-
5): questions and 100% verified answers
2025/2026 update
1.In the hierarchic system of classification, which of the following is least inclusive? - answerfamily
2.Which of the following best describes the molecular structure of water? - answerTwo hydrogen atoms
covalently bonded to one oxygen atom
3.Which of the following about carbohydrates is incorrect?
They contain only two elements: carbon and oxygen.
They are polymers of sugars.
Their most important functions are providing storage, structure, and energy.
They form the backbone of important molecules such as DNA and RNA. - answerThey contain only two
elements: carbon and oxygen.
4.Which of the following is a lipid that is a component of cellular membranes and a precursor to
significant hormones and drugs? - answersteroids
5.Which of the following correctly identifies the difference between saturated and unsaturated fats? -
answerUnsaturated fats contain one or more double bonds in their hydrocarbon tail, while saturated
fats contain no double bonds.
6.Which molecules are considered the most important in biology? - answerCarbohydrates, lipids,
proteins, and nucleic acids
7.The sum of all chemical reactions that occur in an organism is: - answerMetabolism
8.How are plant cells different from animal cells? - answerPlant cells have a cell wall; Animal cells do not
have a cell wall
,9.Where in the cell does active transport take place? - answerplasma membrane
10.Which of the following microtubules can be used to move the cell? - answerFlagella
11.What is the function of lysosomes? - answerdigestion
12.What is the first step of cellular respiration when glucose is converted to pyruvate? -
answerGlycolysis
13.
What are the two catabolic pathways that lead to energy production in a cell? - answerCellular
respiration and fermentation
14.What is the role of water in photosynthesis? - answerSupply electrons in the light reactions
15.What are the two categories of cellular reproduction? - answerSexual reproduction and asexual
reproduction
16.Which of the following best describes the molecular structure of water? - answerTwo hydrogen
atoms covalently bonded to one oxygen atom
17.Which of the following about carbohydrates is incorrect? - answerThey contain only two elements:
carbon and oxygen.
18.Saturated fats - answercontain no double bonds in their hydrocarbon tail. As a result are solid at
room temperature and are considered detrimental to your cardiovascular health.
19.Unsaturated fats - answercontain one or more double bonds in their hydrocarbon tail. As a result are
liquid at room temperature.
20.Phospholipids - answerconsist of two fatty acids bonded to a phosphate group. The phosphate group
is polar and soluble in water whereas the hydrocarbon tail of the fatty acids is nonpolar and non-soluble
, 21.in water. This quality is important in the function of cellular membranes, including the plasma
membrane, as the molecules organize themselves in a way that creates a barrier to protect the cell.
22.Steroids - answerare lipids that are a component of cellular membranes and a precursor to significant
hormones and drugs.
23.The sum of all chemical reactions that occur in an organism is? - answermetabolism
24.Lysosomes - answerare the digestive system of the cell. Lysosomes contain hydrolytic enzymes which
allow them to hydrolyze (break down) proteins, fats, sugars, and nucleic acids taken into the cell as well
as break down other worn out organelles within the cell.
25.Ribosomes - answersite of protein synthesis, makes protein
26.
Vacuoles - answerCell organelle that stores materials such as water, salts, proteins, and carbohydrates
27.
Chloroplasts - answerresponsible for energy production, are found in plants and are the site of
photosynthesis
28. of the following is the fundamental unit of biology? - answercell
29.The molecule that is used as the energy currency of the cell is which of the following? -
answerAdenosine triphosphate (ATP)
30,chromosomes in daughter cells produced by mitosis? - answerIn meiosis, each daughter cell contains
half as many chromosomes as the parent; In mitosis, each daughter cell contains the same number of
chromosomes as the parent cell.
31.Meiosis - answerCell division that produces reproductive cells in sexually reproducing organisms
5): questions and 100% verified answers
2025/2026 update
1.In the hierarchic system of classification, which of the following is least inclusive? - answerfamily
2.Which of the following best describes the molecular structure of water? - answerTwo hydrogen atoms
covalently bonded to one oxygen atom
3.Which of the following about carbohydrates is incorrect?
They contain only two elements: carbon and oxygen.
They are polymers of sugars.
Their most important functions are providing storage, structure, and energy.
They form the backbone of important molecules such as DNA and RNA. - answerThey contain only two
elements: carbon and oxygen.
4.Which of the following is a lipid that is a component of cellular membranes and a precursor to
significant hormones and drugs? - answersteroids
5.Which of the following correctly identifies the difference between saturated and unsaturated fats? -
answerUnsaturated fats contain one or more double bonds in their hydrocarbon tail, while saturated
fats contain no double bonds.
6.Which molecules are considered the most important in biology? - answerCarbohydrates, lipids,
proteins, and nucleic acids
7.The sum of all chemical reactions that occur in an organism is: - answerMetabolism
8.How are plant cells different from animal cells? - answerPlant cells have a cell wall; Animal cells do not
have a cell wall
,9.Where in the cell does active transport take place? - answerplasma membrane
10.Which of the following microtubules can be used to move the cell? - answerFlagella
11.What is the function of lysosomes? - answerdigestion
12.What is the first step of cellular respiration when glucose is converted to pyruvate? -
answerGlycolysis
13.
What are the two catabolic pathways that lead to energy production in a cell? - answerCellular
respiration and fermentation
14.What is the role of water in photosynthesis? - answerSupply electrons in the light reactions
15.What are the two categories of cellular reproduction? - answerSexual reproduction and asexual
reproduction
16.Which of the following best describes the molecular structure of water? - answerTwo hydrogen
atoms covalently bonded to one oxygen atom
17.Which of the following about carbohydrates is incorrect? - answerThey contain only two elements:
carbon and oxygen.
18.Saturated fats - answercontain no double bonds in their hydrocarbon tail. As a result are solid at
room temperature and are considered detrimental to your cardiovascular health.
19.Unsaturated fats - answercontain one or more double bonds in their hydrocarbon tail. As a result are
liquid at room temperature.
20.Phospholipids - answerconsist of two fatty acids bonded to a phosphate group. The phosphate group
is polar and soluble in water whereas the hydrocarbon tail of the fatty acids is nonpolar and non-soluble
, 21.in water. This quality is important in the function of cellular membranes, including the plasma
membrane, as the molecules organize themselves in a way that creates a barrier to protect the cell.
22.Steroids - answerare lipids that are a component of cellular membranes and a precursor to significant
hormones and drugs.
23.The sum of all chemical reactions that occur in an organism is? - answermetabolism
24.Lysosomes - answerare the digestive system of the cell. Lysosomes contain hydrolytic enzymes which
allow them to hydrolyze (break down) proteins, fats, sugars, and nucleic acids taken into the cell as well
as break down other worn out organelles within the cell.
25.Ribosomes - answersite of protein synthesis, makes protein
26.
Vacuoles - answerCell organelle that stores materials such as water, salts, proteins, and carbohydrates
27.
Chloroplasts - answerresponsible for energy production, are found in plants and are the site of
photosynthesis
28. of the following is the fundamental unit of biology? - answercell
29.The molecule that is used as the energy currency of the cell is which of the following? -
answerAdenosine triphosphate (ATP)
30,chromosomes in daughter cells produced by mitosis? - answerIn meiosis, each daughter cell contains
half as many chromosomes as the parent; In mitosis, each daughter cell contains the same number of
chromosomes as the parent cell.
31.Meiosis - answerCell division that produces reproductive cells in sexually reproducing organisms
