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Acetyl CoA is the beginning of a metabolic pathway that produces most of the NADH and FADH for ATP production. When you starve, which of the following will produce the most Acetyl CoA?

A

Protein, carbohydrates, and lipid metabolism all produce the same amount

B

Free Oxygen radicals

C

Protein metabolism

D

Lipid metabolism

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11

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11

Acetyl CoA is the beginning of a metabolic pathway that produces most of the NADH and FADH for ATP production. When you starve, which of the following will produce the most Acetyl CoA?

A

Protein, carbohydrates, and lipid metabolism all produce the same amount

B

Free Oxygen radicals

C

Protein metabolism

D

Lipid metabolism

E

Carbohydrate metabolism

Unanswered

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12

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12

Which of the following occurs when oxyhemoglobin reaches the capillaries of heart muscle?

A

Absorbs oxygen from the mitochondria

B

Releases oxygen which leaves the capillary and diffuses into the cell

C

Releases its oxygen which diffuses from the capillary to the nucleus

D

Releases its oxygen which diffuses from the mitochondria to the capillary

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13

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13

The drug, cannabis, which is produced by the marijuana plant, is a byproduct of which reaction?

A

Dark reaction

B

Light reaction

C

Oxidative phosphorylation of plants

D

Glycolysis in plants

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14

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14

All of the following are true about bile EXCEPT:

A

It acts as an emulsifying agent for lipids and it is synthesized in the liver

B

It disperses globs of fat in the chyme into microscopic particles

C

It acts as an emulsifying agent on carbohydrates and is synthesized in the gall bladder

D

It exposes the large surface area of lipids to lipase

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15

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15

The carbon-nitrogen bond that connects amino acids together in a protein is referred to as which of the following?

A

Peptide bond

B

Covalent bond

C

Ionic bond

D

Octet bond

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16

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16

Dr. Monroe wants to prevent Priscilla, the chair of biology, from digesting carbohydrates. Which organ should she remove from Priscilla that produces the enzymes needed for carbohydrate digestion?

A

Small intestine

B

Liver

C

Pancreas

D

Large intestine

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QuestionGroup: #17 Lipids

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17

All of the following are true about the liver EXCEPT:

A

It receives all the blood from the intestinal system by way of the portal circulation.

B

It produces iron directly with no need for having a food substrate

C

It stores fats and carbohydrates for energy.

D

It regulates blood glucose levels and synthesis of blood proteins

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QuestionGroup: #18 DNA

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18

This molecule controls the production of enzymes in animal cells.

A

It is DNA, a nucleotide that resides in the nucleus of cells

B

It is RNA, the ancestor to DNA

C

It is a protein

D

It is DNA, a carbohydrate

E

It is DNA, a nucleotide which resides in the cytoplasm of the cell

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QuestionGroup: #19 DNA2

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19

Which of the following represents the proper sequence for the "central dogma"?

A

RNA to Protein to DNA

B

RNA to DNA to Protein

C

DNA to RNA to Protein

D

Protein to RNA to DNA

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QuestionGroup: #20 Gene expression

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20

How many different kind of amino acids are necessary for mRNA to make proteins in humans?

A

Bogus question since mRNA does not use amino acids to make protein.

B

Bogus question since mRNA does not use amino acids to make protein rather it is the rough endoplasmic reticulum.

C

20

D

10

When considering the metabolism of the glucose molecule up tothe point just prior to the electron transport chain and ATPproduction, most of the energy from the original glucose moleculeis present within the cell in the form of ________.

The choices are one of these:

A) ATP

B) acetyl-CoA

C) NADH

D) citrate

E) FADH2

Which of the following is not a net product of the citric acid cycle for each molecule of pyruvate generated in glycolysis?

Select one:

a. 1 ATP (GTP)

b. 1 acetyl coA

c. 3 NADH

d. 1 FADH2

Question 2

Which of the following is NOT an end product for an acetyl group that enters the citric acid cycle?

Select one:

a. ATP

b. NADH

c. FADH2

d. oxaloacetate

Question 3

Once they have been processed through the citric acid cycle, the acetyl-CoA molecules from a single glucose molecule produce:

Select one:

a. 2 ATP, 6 NADH, 4 CO2.

b. 6 NADH, 6 GTP.

c. 6 FADH2, 2 ATP, 6 CO2.

d. 6 GTP, 6 FADH2.

e. 4 CO2, 6 FADH2, 2 ATP.

Question 4

The products of the citric acid cycle breaking down 2 acetyl-CoA include 2 ATP (converted from GTP), 6 NADH and 2 FADH2.

Select one:

True

False

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