Bio256 Exam 2 with Verified Answers Graded A+
1. What is metabolism, catabolism and
anabolism?
2. Explain the role of ATP in anabolism
and catabolisim:
3. *Digestion in the GI tract is Catabolic
or Anabolic?
4. Carbohydrate metabolism is mostly
metabolism
Metabolism: All Chemical
processe...
Bio256 Exam 2 with Verified Answers Graded A+
1. What is metabolism, catabolism and Metabolism: All Chemical
anabolism? processes in the body. Conversion
of food into energy.
Catabolism (Exergonic= energy
released): Breaking down com-
plex chemicals ex. Digestion
Anabolism (Endergonic= ener-
gy consumed): building complex
chemicals (Protein Synthesis)
2. Explain the role of ATP in anabolism Catabolic reaction:
and catabolisim: -Energy is given OFF in the form
of ATP
-The rest is released as Heat
Anabolic reaction:
-Energy & ATP is used
-Some heat is released
3. *Digestion in the GI tract is Catabolic Catabolic (Break down)
or Anabolic?
4. Carbohydrate metabolism is mostly Glucose metabolism
metabolism
5. **Dietary sources of carbs -Monosaccharides: 1 unit of glu-
cose
-Disaccharides: 2 units of mono-
saccharides, EX: Sucrose
-Polysaccharides: a buch of
monosaccharides together EX:
Starch, glycogen, and cellu-
lose-plant structural carb that hu-
mans cannot break down.
6. When glucose is low, one way it can be breaking down glycogen
formed is by...
breaking down cell membranes Feedback:
breaking down cell walls Glycogen is a polymer of glu-
, Bio256 Exam 2 with Verified Answers Graded A+
breaking down starch cose and is broken down to its
breaking down glycogen glucose monomers as an energy
source when glucose concentra-
tion is low.
7. The oxidation of glucouse to produce Cellular respiration
ATP is called? -Catabolic process in which ener-
gy is released
8. The bodys use of glucose breakdown ATP production for energy
primary purpose?
9. **What are the 4 steps of cellular respi- -glycolysis= break down of glu-
ration? cosese
-formation of acetyl coenzyme A
-krebs cycle reaction
-electron transport chain reac-
tions= The step that produces the
most ATP
10. *How many ATP's are net gained dur- 2 ATP's
ing glycolysis?
11. Aerobic vs Anarobic Respiration -These are the 2 methods of cre-
ating ATP:
Aerobic: with oxygen
-Results in greater ATP produc-
tion
-Anarobic: Without oxygen
-Glycolysis can proceed as it does
not require oxygen
-Results in lesser ATP production
-Glucose is reduced to 2 lactic
acid
12. Glycolysis: location, substrate, end -Location: Cytoplasm
product, how many ATPs, anaerobic or -Substrate (starting material): Glu-
aerobic? cose molecule
-End product: 2 Pyruvate. Prod-
13. *If there is no oxygen present after gly- -Anaerobic,
colysis takes place, what pathway is -forms Lactic acid
taken and what product is formed? -2 ATP's
14. ***cellular respiration equation and its C6H1206 + 6O2 + 30-32ADP +
end products: 30-32 Pi --> 6CO2 + 6H2O +
30-32 ATP
**The missing part will be 6CO2**
-end products are: Carbs, water
and energy
15. aerobic metabolism - Main method for producing ATP
-Oxygen used as reactant in com-
pete breakdown of food
-A lot of ATP used for ATP synthe-
sis
-Begins with Glycolysis
2 Pathways:
- The krebs cycle
-Oxidative Phosphorylation: used
in electron transport
16. Aerobic metabolism steps: - Pyruvate leaves the cytoplasm
and enters the mitochondrial ma-
tric
-Pyruvate combines with coen-
zyme A to form Acetyl CoA
-Acetyl CoA starts the Kreb cycle,
which takes place in the mitochon-
drial matrix: here is where NADH
& FAD are picked up by hydrogens
and electrons.
17. Where does the Kreb cycle take place? mitochondrial matrix
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