DAT Biology exam questions with correct
answers
Carotenoids - CORRECT ANSWERS ✔✔lipid derivatives, produce pigments in
plants and animals , An accessory pigment, either yellow or orange, in the
chloroplasts of plants. By absorbing wavelengths of light that chlorophyll
cannot, carotenoids broaden the spectrum of colors that can drive
photosynthesis.
Porphyrins - CORRECT ANSWERS ✔✔lipid derivatives, a group of light-
sensitive, pigmented, ringed chemical structures that are required for the
synthesis of hemoglobin. Complexed with metals usch as iron in hemoglobin
and chlorophyll with Mg
Can H20 and hydrocarbons pass freely across membrane? - CORRECT
ANSWERS ✔✔yes (small, uncharged, non-polar, hydrophobic can pass)
Porins - CORRECT ANSWERS ✔✔allow passage of certain ions and small
polar molecules such as aquaporins in kidneys for H20
Rough ER - CORRECT ANSWERS ✔✔protein synthesis, creates glycoproteins
for secretion
Smooth ER - CORRECT ANSWERS ✔✔synthesis of hormones, lipids,
breakdown of toxins and drugs in liver
,cyclosis - CORRECT ANSWERS ✔✔transport of material in cytoplasm
(steaming movement)
Peroxiomes - CORRECT ANSWERS ✔✔breakdown of H2O2, fatty acids, AA.
In liver and kidneys to break down toxins, by-products of photorespiration in
plants
Centrioles - CORRECT ANSWERS ✔✔two tiny structures located in the
cytoplasm of animal cells near the nuclear envelope; play a role in cell division.
Are microtubles (MTOCs)
Storage vocuoles - CORRECT ANSWERS ✔✔store starch, pigments, toxic
substances (nicotine) in plants
Contractile vacuoles - CORRECT ANSWERS ✔✔in single cell organism, pump
excess water out of cell Ex. fresh water protozoa to prevent bursting
Desmosome - CORRECT ANSWERS ✔✔aka spot welding, support and
stability
Tight junctions - CORRECT ANSWERS ✔✔animal cells, seal to prevent
passage of materials btwn cell
gap junctions - CORRECT ANSWERS ✔✔narrow tunnels btwn animal cells,
only ions exchange
, plasmodesma - CORRECT ANSWERS ✔✔barrow channels between plant cells
for exchange of materials
Bulk flow - CORRECT ANSWERS ✔✔collective movement of substance (like
blood or urine) in same direction due to force
dialysis - CORRECT ANSWERS ✔✔diffusion of solutes across selective
permeable membrane (passive)
plasmolysis - CORRECT ANSWERS ✔✔water of out cell, results in collapse
aka shrivel (passive)
Total ATP in Eukaryotic and Prokaryotic - CORRECT ANSWERS
✔✔Eukaryotic = 36 ATP Prokaryotic = 38 ATP
Glycolysis - CORRECT ANSWERS ✔✔1 glucose + 2 ATP + 4 ADP + 2NAD +
2Pi --> 2 pyruvate + 2ADP + 4 ATP + 2NADH +2H + 2H2O = 2 ATP
Fermination - CORRECT ANSWERS ✔✔1 pyruvate + NADH --> (Ethanol +
CO2 in Plants) and (Lactic Acid in animals use for muscle cells) + NAD
Pyruvate decarboxylation - CORRECT ANSWERS ✔✔2 pyruvate + 2
Coenzyme A + 2 NAD --> 2 Acetyl CoA + 2CO2 + 2NADH = - 2 ATP
answers
Carotenoids - CORRECT ANSWERS ✔✔lipid derivatives, produce pigments in
plants and animals , An accessory pigment, either yellow or orange, in the
chloroplasts of plants. By absorbing wavelengths of light that chlorophyll
cannot, carotenoids broaden the spectrum of colors that can drive
photosynthesis.
Porphyrins - CORRECT ANSWERS ✔✔lipid derivatives, a group of light-
sensitive, pigmented, ringed chemical structures that are required for the
synthesis of hemoglobin. Complexed with metals usch as iron in hemoglobin
and chlorophyll with Mg
Can H20 and hydrocarbons pass freely across membrane? - CORRECT
ANSWERS ✔✔yes (small, uncharged, non-polar, hydrophobic can pass)
Porins - CORRECT ANSWERS ✔✔allow passage of certain ions and small
polar molecules such as aquaporins in kidneys for H20
Rough ER - CORRECT ANSWERS ✔✔protein synthesis, creates glycoproteins
for secretion
Smooth ER - CORRECT ANSWERS ✔✔synthesis of hormones, lipids,
breakdown of toxins and drugs in liver
,cyclosis - CORRECT ANSWERS ✔✔transport of material in cytoplasm
(steaming movement)
Peroxiomes - CORRECT ANSWERS ✔✔breakdown of H2O2, fatty acids, AA.
In liver and kidneys to break down toxins, by-products of photorespiration in
plants
Centrioles - CORRECT ANSWERS ✔✔two tiny structures located in the
cytoplasm of animal cells near the nuclear envelope; play a role in cell division.
Are microtubles (MTOCs)
Storage vocuoles - CORRECT ANSWERS ✔✔store starch, pigments, toxic
substances (nicotine) in plants
Contractile vacuoles - CORRECT ANSWERS ✔✔in single cell organism, pump
excess water out of cell Ex. fresh water protozoa to prevent bursting
Desmosome - CORRECT ANSWERS ✔✔aka spot welding, support and
stability
Tight junctions - CORRECT ANSWERS ✔✔animal cells, seal to prevent
passage of materials btwn cell
gap junctions - CORRECT ANSWERS ✔✔narrow tunnels btwn animal cells,
only ions exchange
, plasmodesma - CORRECT ANSWERS ✔✔barrow channels between plant cells
for exchange of materials
Bulk flow - CORRECT ANSWERS ✔✔collective movement of substance (like
blood or urine) in same direction due to force
dialysis - CORRECT ANSWERS ✔✔diffusion of solutes across selective
permeable membrane (passive)
plasmolysis - CORRECT ANSWERS ✔✔water of out cell, results in collapse
aka shrivel (passive)
Total ATP in Eukaryotic and Prokaryotic - CORRECT ANSWERS
✔✔Eukaryotic = 36 ATP Prokaryotic = 38 ATP
Glycolysis - CORRECT ANSWERS ✔✔1 glucose + 2 ATP + 4 ADP + 2NAD +
2Pi --> 2 pyruvate + 2ADP + 4 ATP + 2NADH +2H + 2H2O = 2 ATP
Fermination - CORRECT ANSWERS ✔✔1 pyruvate + NADH --> (Ethanol +
CO2 in Plants) and (Lactic Acid in animals use for muscle cells) + NAD
Pyruvate decarboxylation - CORRECT ANSWERS ✔✔2 pyruvate + 2
Coenzyme A + 2 NAD --> 2 Acetyl CoA + 2CO2 + 2NADH = - 2 ATP
