ch.25 a&p II

Metabolism is best described as:

-theres two phase catabolism and anabolism

-catabolism: broken down the material and during this time energy is release

-anabolism: small molecules becomes large molecules and energy is inhibited not realease.

What is the most important outcome of cellular respiration?

-energy transformation from foodstuffs

ATP (adenosine triphosphate) is

-is a currency used by your body cells its energy

A person becomes hungry after he has NOT eaten for a time because:

-low levels of glucose(blood sugar level going down)

Uncontrolled ketosis ultimately will result in:

-coma and acidosis

Ammonia produced by deamination is converted by the liver into a less toxic substance called:

-urea

Which of the following produces the most body heat?

-when energy is produce

The principal result of glucose metabolism is the:

-ATP, heat, carbon dioxide but most impoortantly ATP(energy)

Basal metabolic rate is a measurement of the body's energy needs when it is:

-rest

The formation of glycogen from glucose is called:

-glycogenesis

Before fatty acids can be oxidized by means of the Krebs cycle, they must be converted into:

-acetyl CoA

Before fatty acids can be utilized as fuel, they are degraded by beta oxidation to molecules of

-acetyl CoA

Excess protein taken into the body will be

-converted into fat

Carbon dioxide plus ammonia forms

-urea

Most biological oxidations are

-dehydrogenation (taken away hydrogen from the molecule)

Conversion of NAD+ to NADH and H+ is

-reduction ( add hydrogen to molecule is this )

The function of coenzyme A in glucose metabolism is

-to carry two carbon unites into Krebs cycle

.The primary significance of the Krebs cycle in terms of ATP production is

-transfer energy to nadh and fndh

. Each molecule of acetyl CoA that enters the Krebs cycle produces how many molecules of carbon dioxide?

-two molecules of carbon dioxide

The end-products of the complete aerobic oxidation of glucose are

-ATP, carbon dioxide and water

Which of the following processes requires oxygen?

-electron transfer system

The most common carbohydrate "fuel" for living organisms is

-glucose

Enzymes of the Krebs cycle and electron transport chain are located in the

-mitochondria

Where the glycolysis is carried out in the cell?

-cytoplasm

Which statement of catabolism is correct?

-a process of producing energy by oxidation of sugar

Which statement of anabolism is correct?

-a process of synthesizing protein from amino acids

Which statement about HDL is NOT correct?

-transfers cholesterol from liver to cells

Which statement about LDL is NOT correct?

-transfer cholesterol from blood to liver for elimination

Which of the following is not considered a key molecule of metabolic crossroad:

-citric acid

A process called deamination in the hepatocytes is involved in the catabolism of

-protein or amino acids

During the breakdown of glucose, What are the net gain of ATP in anaerobic pathway ?

-only two molecules of atp is produce of glucose

During the breakdown of glucose, What are the net gain of ATP in aerobic pathway?

-36 or 38 net gain

depends how the hydrogens produce during the gycolygisis

How can energy be obtained from amino acids?

-all are correct

Which statement about lipids broken down is correct?

-triglycerides have to be changed into acetyl CoA before entering Krebs cycle

What is gluconeogenesis ?

-body synthesis glycogin or sugar from other sources

Which statement is correct about the regulation of absorptive phase?

-all are correct

Which statement is correct about the regulation of postabsorptive phase?

-all are correct

Which is the factor that is involved in heat exchange with the environment?

-radiation, evaporation, conduction, head and cold exchnage