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ABCTE Biology Exam Questions And
Answers (Guaranteed A+)
A cell's surface-to-volume ratio is low because: - Answer✔All materials are exchanged through
the cell membrane.
Cells move necessary material into and out of the cell via the cell membrane. If cell volume were
to high, this exchange would be impaired. The plasma membrane is quite tough and does not
limit cell size.
What is the primary structural component of the plasma membrane? - Answer✔Phospholipids
are the primary component of the cell membrane.
Microtubules, which are part of the cytoskeleton, are also major components of: -
Answer✔Flagella. Microtubules extend through the plasma membrane of unicellular organisms
to form the "backbone" of flagella and cilia.
The sodium-potassium pump in cells is an example of: - Answer✔Active Transport. Transport
proteins actively pump sodium and potassium against the concentration gradient into and out of
the cell.
The anaerobic process of lysing sugars that occurs in the cytoplasm is: - Answer✔Glycolysis.
Glycolysis is the breaking down of the carbon bonds in glucose in the anaerobic environment of
the cytoplasm.
An electron transport molecule that is part of the Krebs cycle: - Answer✔NADH. In the Krebs
cycle, oxidation of carbon releases energy that transforms ADP to ATP, and some remaining
energy is use to turn NAD into the electron-carrying NADH
In the light reaction, photons striking a pigment activate an electron cascade that leads to the
formation of ATP in the process of: - Answer✔Photophosphorylation, involves photons hitting
pigment to cause an electron cascade that result in the transfer of phosphate to create ATP.
PEP (phosphoenolpyruvate) is part of which process that more efficiently uses carbon dioxide
during photosynthesis in plants? - Answer✔Carbon-4 photosynthesis.
PEP has a greater affinity for carbon dioxide that would otherwise be lost during
photorespiration, so it makes this form of photosynthesis more efficient.
What occurs during mitotic metaphase? - Answer✔Centromeres line up along a central plate
1|Page
ABCTE Biology Exam Questions And
Answers (Guaranteed A+)
A cell's surface-to-volume ratio is low because: - Answer✔All materials are exchanged through
the cell membrane.
Cells move necessary material into and out of the cell via the cell membrane. If cell volume were
to high, this exchange would be impaired. The plasma membrane is quite tough and does not
limit cell size.
What is the primary structural component of the plasma membrane? - Answer✔Phospholipids
are the primary component of the cell membrane.
Microtubules, which are part of the cytoskeleton, are also major components of: -
Answer✔Flagella. Microtubules extend through the plasma membrane of unicellular organisms
to form the "backbone" of flagella and cilia.
The sodium-potassium pump in cells is an example of: - Answer✔Active Transport. Transport
proteins actively pump sodium and potassium against the concentration gradient into and out of
the cell.
The anaerobic process of lysing sugars that occurs in the cytoplasm is: - Answer✔Glycolysis.
Glycolysis is the breaking down of the carbon bonds in glucose in the anaerobic environment of
the cytoplasm.
An electron transport molecule that is part of the Krebs cycle: - Answer✔NADH. In the Krebs
cycle, oxidation of carbon releases energy that transforms ADP to ATP, and some remaining
energy is use to turn NAD into the electron-carrying NADH
In the light reaction, photons striking a pigment activate an electron cascade that leads to the
formation of ATP in the process of: - Answer✔Photophosphorylation, involves photons hitting
pigment to cause an electron cascade that result in the transfer of phosphate to create ATP.
PEP (phosphoenolpyruvate) is part of which process that more efficiently uses carbon dioxide
during photosynthesis in plants? - Answer✔Carbon-4 photosynthesis.
PEP has a greater affinity for carbon dioxide that would otherwise be lost during
photorespiration, so it makes this form of photosynthesis more efficient.
What occurs during mitotic metaphase? - Answer✔Centromeres line up along a central plate
1|Page
