I need a little help understanding these study guide questions?

Posted on 2016-02-20 14:09:00 in Biology by BUNNYBOO

1.Essential nutrients 

A) are important in the diet but not necessary for life. 
B)are the only nutrients required by the body. 
C)cannot be made in sufficient quantities by the body. 
D) are needed to make food taste good. 
E) are manufactured by the body 

2.Aerobic respiration can produce around __________ ATP per glucose molecule and lactic acid fermentation produces __________ ATP. 

A) 2; 4 
B)4; 6 
C) 6; 36 
D)36; 2 

3.In glycolysis, glucose is converted to 

A)CO2 and H2O. 
B)pyruvate* 
C)citrate. 
D)acetyl coA. 
E)NAD+ and ADP 

4.Before entering the Krebs cycle, pyruvate is converted to 

A) glucose. 
B)H2O and CO2. 
C)acetic acid. 
D)acetyl-CoA.* 
E)oxaloacetate. 

5.Synthesis of ATP via a proton gradient is called 

A)glycolysis. 
B)krebs cycle. 
C)chemiosmosis.* 
D)substrate-level phosphorylation. 
E)fermentation. 

6.The electrons that are transferred through the electron transport system initially belonged to 

A)NADH. 
B) FADH2. 
C)ATP. 
D)oxygen. 
E)NADH and FAD

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