Metabolism multiple choice

Question 1

which of the following is correct description of a ____ troph? They are organisms that..

Answer 1

Photoautotrophs: organisms that can build all organic compounds required for life from simple inorganic materials , using light in the process
Heterotrophs : organisms that feed on other organisms to obtain chemical energy
Chemoautotrophs: organisms that can build all other organic compounds required for life from simple inorganic materials without using light energy

Question 2

which of the following is the correct word/chemical equation for the____

Answer 2

Cellular Respiration - C6H12O6 + 6 O2 -> 6 CO2 + 6 H2O + 36 ATP + heat

Photosynthesis - 6 CO2 + 6 H2O -> C6H12O6 + 6 O2

Glycolysis - C6H12O6 + 2 ATP + 2 NAD+ + 4 ATP + 2 Pi -> 2 pyruvate + 4 ATP + 2 NADH + 2 H+ + 2 ADP

Pyruvate Oxidation - 2 pyruvate + 2 NAD+ + 2 CoA -> 2 acetyl-CoA + 2 NADH + 2 H+ + 2 CO2

Krebs Cycle - 2 acetyl-CoA + 2 oxaloacetate + 6 NAD+ + 2 ADP + 2 Pi + 2 FAD -> 2 CoA + 4 CO2 + 2 oxaloacetate + 6 NADH + 6 H+ + 2 FADH2 + 2 ATP

ETC - 6 NADH (Krebs) + 2 NADH (pyruvate oxidation) + 2 FADH2 (from 2 cytosolic NADH) + 32 ADP + 32 Pi + 6 O2 + 12 H+ -> 8 NAD+ + 4 FAD+ + 24 H+ + 32 ATP + 6 H2O

Calvin Cycle - 3 RuBP + 3 CO2 + 9 ATP + 6 NADPH + 5 H2O -> 9 ADP + 8 Pi + 6 NADP+ + 1 G3P + 3 RuBP

Question 3

18. Organisms that require oxygen for survival

Answer 3

Obligate aerobes

Question 4

_____ can best be described as which of the following kinds of pathways?

Answer 4

• glycolysis : anaerobic and catabolic and exergonic
• pyruvate oxidation, Krebs cycle, and ETC are aerobic and exergonic
• photosynthesis : anabolic and endogonic

Question 5

. Both lactic acid fermentation and ethanol fermentation produces

Answer 5

2 NAD+ from NADH and H+

Question 6

. the anaerobic pathways provide enough energy to meet all of the energy demands of:

Answer 6

• many unicellular and some multi-cellular organisms

Question 7

the end product of ____ is:

Answer 7

Cellular Respiration - 6 CO2 + 6 H2O + 36 ATP + heat

Photosynthesis - C6H12O6 + 6 O2

Glycolysis - 2 pyruvate + 4 ATP + 2 NADH + 2 H+ + 2 ADP

Pyruvate Oxidation - 2 acetyl-CoA + 2 NADH + 2 H+ + 2 CO2

Krebs Cycle - 2 CoA + 4 CO2 + 2 oxaloacetate + 6 NADH + 6 H+ + 2 FADH2 + 2 ATP

Question 8

the Krebs cycle:

Answer 8

Produces 2 molecules of co2

Question 9

. the electron transport chain of photosynthesis:

Answer 9

pumps protons into the space between the inner and outer mitochondrial membranes

• two paths for electrons: cyclic and non-cyclic, NADH is final electron acceptor, splitting of water is source of electrons, and an energy time graph

Question 10

photosystem 2 and 1 are located in

Answer 10

Choloroplast thylakoid membranes

Question 11

water participates directly in the light reactions of photosynthesis by

Answer 11

donating electrons to photosystem II.

Question 12

the energy that is used to establish the proton gradient across the thylakoid membrane comes from the:

Answer 12

passage of electrons along the electron transport chain of photosystem II.

Question 13

. as light intensity increases the rate of photosynthesis

Answer 13

• temperature, CO2, light intensity; increase

- O2 levels; decrease

Question 14

which of the following events of photosynthesis is concerned immediately with light?

Answer 14

excitation of chlorophyll

- excitation of delocalized electrons

Question 15

what does carbon dioxide combine with during the Calvin cycle of photosynthesis

Answer 15

Rubisco (1, 5- bi phosphate ) and water to produce 6 carbon