BIOLOGY 101 LATEST 2026 TEST PAPER 1 QUESTIONS AND
ANSWERS GUARANTEE A+
✔✔Which of the following effects is produced by the high surface tension of water? -
✔✔A water strider can walk across the surface of a small pond.
✔✔What is the pH of a solution with a hydroxyl ion (OH-) concentration of 10-12 M? -
✔✔pH 2
✔✔Which of the following solutions would require addition of the greatest amount of
base to bring the solution to neutral pH? - ✔✔gastric juice at pH 2
✔✔Which drawing in Figure 2.3 depicts the electron configuration of an element with
chemical properties most similar to those of helium (2He)? - ✔✔E
✔✔Which drawing in Figure 2.3 depicts the electron configuration of an atom that can
form covalent bonds with up to two hydrogen atoms? - ✔✔C
✔✔Which drawing in Figure 2.3 depicts the electron configuration of an atom capable of
forming three covalent bonds with other atoms? - ✔✔B
✔✔The reactivity of an atom arises from - ✔✔the existence of unpaired electrons in the
valence shell.
✔✔Many mammals control their body temperature by sweating. Which property of water
is most directly responsible for the ability of sweat to lower body temperature? - ✔✔the
absorption of heat by the breaking of hydrogen bonds
✔✔How many electron pairs are shared between two carbon atoms when they are
joined by a double bond? - ✔✔2
✔✔Which of the following common chemical groups is hydrophobic? - ✔✔methyl
✔✔Which of the following chemical equations describes a hydrolysis reaction? -
✔✔disaccharide + H2O = monosaccharide + monosaccharide
✔✔Which of the following statements is true of both starch and cellulose? - ✔✔They are
both polymers of glucose.
✔✔Which of the following is the smallest carbohydrate? - ✔✔sucrose
✔✔Why are hydrocarbons insoluble in water? - ✔✔The majority of their bonds are
nonpolar covalent carbon-to-hydrogen linkages.
, ✔✔Which of the following large biological molecules will self-assemble into a bilayer
when mixed with water? - ✔✔phospholipids
✔✔The biochemical reaction that joins two amino acids to form a dipeptide is
accompanied by - ✔✔the release of a water molecule.
✔✔Which bonds are created during the formation of the primary structure of a protein? -
✔✔peptide bonds
✔✔The α helix and β pleated sheet are examples of which level of protein structure? -
✔✔secondary
✔✔In a normal cellular protein, where would you expect to find a hydrophilic amino acid
such as asparagine? - ✔✔on the exterior surface of the protein, interacting with water
✔✔A nucleotide is composed of - ✔✔a nitrogenous base, a phosphate group, and a
pentose sugar
✔✔Which of the following are pyrimidines? - ✔✔cytosine and uracil
✔✔If a DNA sample were composed of 15% adenine, what would be the percentage of
guanine? - ✔✔35
✔✔One advantage of light microscopy over transmission electron microscopy is that -
✔✔light microscopy allows you to view dynamic processes in living cells.
✔✔Which of the following structures will be found in nearly all eukaryotic cells? -
✔✔mitochondria
✔✔A cell with an abundance of free ribosomes is most likely carrying out which of the
following processes? - ✔✔producing primarily cytoplasmic proteins
✔✔The liver is involved in detoxification of many poisons and drugs. Which of the
following structures is primarily involved in this process and therefore abundant in liver
cells? - ✔✔smooth ER
✔✔Hydrolytic enzymes must be segregated and packaged to prevent general
destruction of cellular components. In animal cells, which of the following organelles
contains these hydrolytic enzymes? - ✔✔lysosomes
✔✔Some key innovations in the evolution of eukaryotic cells from a prokaryotic
ancestor are membrane-bound organelles. Which of the following organelles or features
ANSWERS GUARANTEE A+
✔✔Which of the following effects is produced by the high surface tension of water? -
✔✔A water strider can walk across the surface of a small pond.
✔✔What is the pH of a solution with a hydroxyl ion (OH-) concentration of 10-12 M? -
✔✔pH 2
✔✔Which of the following solutions would require addition of the greatest amount of
base to bring the solution to neutral pH? - ✔✔gastric juice at pH 2
✔✔Which drawing in Figure 2.3 depicts the electron configuration of an element with
chemical properties most similar to those of helium (2He)? - ✔✔E
✔✔Which drawing in Figure 2.3 depicts the electron configuration of an atom that can
form covalent bonds with up to two hydrogen atoms? - ✔✔C
✔✔Which drawing in Figure 2.3 depicts the electron configuration of an atom capable of
forming three covalent bonds with other atoms? - ✔✔B
✔✔The reactivity of an atom arises from - ✔✔the existence of unpaired electrons in the
valence shell.
✔✔Many mammals control their body temperature by sweating. Which property of water
is most directly responsible for the ability of sweat to lower body temperature? - ✔✔the
absorption of heat by the breaking of hydrogen bonds
✔✔How many electron pairs are shared between two carbon atoms when they are
joined by a double bond? - ✔✔2
✔✔Which of the following common chemical groups is hydrophobic? - ✔✔methyl
✔✔Which of the following chemical equations describes a hydrolysis reaction? -
✔✔disaccharide + H2O = monosaccharide + monosaccharide
✔✔Which of the following statements is true of both starch and cellulose? - ✔✔They are
both polymers of glucose.
✔✔Which of the following is the smallest carbohydrate? - ✔✔sucrose
✔✔Why are hydrocarbons insoluble in water? - ✔✔The majority of their bonds are
nonpolar covalent carbon-to-hydrogen linkages.
, ✔✔Which of the following large biological molecules will self-assemble into a bilayer
when mixed with water? - ✔✔phospholipids
✔✔The biochemical reaction that joins two amino acids to form a dipeptide is
accompanied by - ✔✔the release of a water molecule.
✔✔Which bonds are created during the formation of the primary structure of a protein? -
✔✔peptide bonds
✔✔The α helix and β pleated sheet are examples of which level of protein structure? -
✔✔secondary
✔✔In a normal cellular protein, where would you expect to find a hydrophilic amino acid
such as asparagine? - ✔✔on the exterior surface of the protein, interacting with water
✔✔A nucleotide is composed of - ✔✔a nitrogenous base, a phosphate group, and a
pentose sugar
✔✔Which of the following are pyrimidines? - ✔✔cytosine and uracil
✔✔If a DNA sample were composed of 15% adenine, what would be the percentage of
guanine? - ✔✔35
✔✔One advantage of light microscopy over transmission electron microscopy is that -
✔✔light microscopy allows you to view dynamic processes in living cells.
✔✔Which of the following structures will be found in nearly all eukaryotic cells? -
✔✔mitochondria
✔✔A cell with an abundance of free ribosomes is most likely carrying out which of the
following processes? - ✔✔producing primarily cytoplasmic proteins
✔✔The liver is involved in detoxification of many poisons and drugs. Which of the
following structures is primarily involved in this process and therefore abundant in liver
cells? - ✔✔smooth ER
✔✔Hydrolytic enzymes must be segregated and packaged to prevent general
destruction of cellular components. In animal cells, which of the following organelles
contains these hydrolytic enzymes? - ✔✔lysosomes
✔✔Some key innovations in the evolution of eukaryotic cells from a prokaryotic
ancestor are membrane-bound organelles. Which of the following organelles or features
