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POB FINAL ACTUAL 2026 EXAM ALL
QUESTIONSAND CORRECT DETAILED ANSWERS |
ALREADY A GRADED | NEW AND REVISED
1. Which of the following are true?
Both photosynthesis and respiration produce ATP during enzymatic
reactions with substrates.
Both photosynthesis and respiration involve building up an electron
gradient. Both photosynthesis and respiration have metabolic pathways.
Both photosynthesis and respiration involve building up a hydrogen ion
gradi- ent.: all are true
2. Inorganic ion cofactors: are minerals like iron and zinc
3. How many carbon dioxide molecules are produced by the complete metabo-
lism of one glucose molecule, CH,206, during aerobic respiration?: 6
4. Which of the following types of movement of molecules across a membrane
require energy.: A hormone being secreted outside a cell using exocyctosis.
A bacterium being taken into a white blood cell by
phagocytosis Cholesterol moving into a cell by receptor
mediated endocytosis.
5. The light reactions could be viewed as analogous to a hydro-electric dam. In
that case, the water stored in the reservoir above the dam would be analogous
to...: hydrogen ions (protons). the thylakoid space.
6. If an enzymatic reaction was controlled by feedback inhibition, we
would expect it to stop: as soon as a critical level of end product builds up.
7. Match the leaf structures with their
functions Prompts:
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leaf vein
stomata
cuticle
Answers:
protects leaf
brings water into the leaf.
bring carbon dioxide into the leaf: Leaf vein ’brings water into the leafStomata ’bring carbon
dioxide into the leafCuticle ’protects leaf
8. Which of the following are outputs of the citric acid cycle?: 6 NADH, 2 FADH2, 2
ATP, 4 carbon dioxide
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9. When blood sugar levels go up beta cells fo the pancreas secrete insulin.
How does this happen?: Vesicles full of insulin migrate to the cell membrane and fuse with it.
10. What property of phospholipids make them suitable for the formation of
the double layer found in membranes?: they have both a hydrophobic and a hydrophilic end
11. Choose the following statements that are true about the diagram concerning
respiration above?: Hydrogen ions are being concentrated in the intermembrane space at H.
Hydrogen ions are being pumped across the membrane at C.
Hydrogen ions (protons) are being concentrated in the matrix at label H.
12. The part of the cytoskeleton that causes the contraction of muscle cells
is: microfilaments made of actin and their associated motor proteins.
13. Which of the following types of movement of molecules across a
membrane require energy.: A hormone being secreted outside a cell using exocytosis
Cholesterol moving into a cell by receptor-mediated
endocytosis A bacterium being taken into a white blood cell by
phagocytosis
14. H+ molecules only on the inside on the right while the H+ molecules are
on the inside and outside of the cell on the leftIn this diagram, compared to
the cell on the right, the cell on the left: has a more stable configuration
has less potential energy
15. A’B’C’D’EConsider a metabolic pathway represented by the above image.
If the letters represent reactants and products, how many enzymes would be
required to run this.: 4
16. Mitochondria might be moved in a cell to a place in the cell where more
energy is needed. This is accomplished by: the mitochondria being pulled along a
cytoskeletal element by a motor protein until it is in the proper place.
17. The metabolic pathways in respiration break down, catabolize, organic
mol- ecules: to take high-energy electrons from the organic molecules in small units and send those
electrons to the electron transport chain to make most of the ATP in cells.
18. Choose the following statements that are true about the diagram concerning
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respiration above?: oxygen is gaining electrons at F to turn into a water molecule.
Hydrogen ions (protons) are dittusing across the membrane at G.
POB FINAL ACTUAL 2026 EXAM ALL
QUESTIONSAND CORRECT DETAILED ANSWERS |
ALREADY A GRADED | NEW AND REVISED
1. Which of the following are true?
Both photosynthesis and respiration produce ATP during enzymatic
reactions with substrates.
Both photosynthesis and respiration involve building up an electron
gradient. Both photosynthesis and respiration have metabolic pathways.
Both photosynthesis and respiration involve building up a hydrogen ion
gradi- ent.: all are true
2. Inorganic ion cofactors: are minerals like iron and zinc
3. How many carbon dioxide molecules are produced by the complete metabo-
lism of one glucose molecule, CH,206, during aerobic respiration?: 6
4. Which of the following types of movement of molecules across a membrane
require energy.: A hormone being secreted outside a cell using exocyctosis.
A bacterium being taken into a white blood cell by
phagocytosis Cholesterol moving into a cell by receptor
mediated endocytosis.
5. The light reactions could be viewed as analogous to a hydro-electric dam. In
that case, the water stored in the reservoir above the dam would be analogous
to...: hydrogen ions (protons). the thylakoid space.
6. If an enzymatic reaction was controlled by feedback inhibition, we
would expect it to stop: as soon as a critical level of end product builds up.
7. Match the leaf structures with their
functions Prompts:
,2|Page
leaf vein
stomata
cuticle
Answers:
protects leaf
brings water into the leaf.
bring carbon dioxide into the leaf: Leaf vein ’brings water into the leafStomata ’bring carbon
dioxide into the leafCuticle ’protects leaf
8. Which of the following are outputs of the citric acid cycle?: 6 NADH, 2 FADH2, 2
ATP, 4 carbon dioxide
,3|Page
9. When blood sugar levels go up beta cells fo the pancreas secrete insulin.
How does this happen?: Vesicles full of insulin migrate to the cell membrane and fuse with it.
10. What property of phospholipids make them suitable for the formation of
the double layer found in membranes?: they have both a hydrophobic and a hydrophilic end
11. Choose the following statements that are true about the diagram concerning
respiration above?: Hydrogen ions are being concentrated in the intermembrane space at H.
Hydrogen ions are being pumped across the membrane at C.
Hydrogen ions (protons) are being concentrated in the matrix at label H.
12. The part of the cytoskeleton that causes the contraction of muscle cells
is: microfilaments made of actin and their associated motor proteins.
13. Which of the following types of movement of molecules across a
membrane require energy.: A hormone being secreted outside a cell using exocytosis
Cholesterol moving into a cell by receptor-mediated
endocytosis A bacterium being taken into a white blood cell by
phagocytosis
14. H+ molecules only on the inside on the right while the H+ molecules are
on the inside and outside of the cell on the leftIn this diagram, compared to
the cell on the right, the cell on the left: has a more stable configuration
has less potential energy
15. A’B’C’D’EConsider a metabolic pathway represented by the above image.
If the letters represent reactants and products, how many enzymes would be
required to run this.: 4
16. Mitochondria might be moved in a cell to a place in the cell where more
energy is needed. This is accomplished by: the mitochondria being pulled along a
cytoskeletal element by a motor protein until it is in the proper place.
17. The metabolic pathways in respiration break down, catabolize, organic
mol- ecules: to take high-energy electrons from the organic molecules in small units and send those
electrons to the electron transport chain to make most of the ATP in cells.
18. Choose the following statements that are true about the diagram concerning
,4|Page
respiration above?: oxygen is gaining electrons at F to turn into a water molecule.
Hydrogen ions (protons) are dittusing across the membrane at G.
