10 during the first few days of a fast what energy source provides Ideas

Below is information and knowledge on the topic during the first few days of a fast what energy source provides gather and compiled by the show.vn team. Along with other related topics like: in which process are the mitochondria of the cells involved?, during times of starvation, protein in the body will first be used to:, where do the tca cycle reactions take place?, which of the following can be synthesized from all three energy-yielding nutrients?, what is the immediate fate of excess dietary protein in the body?, after the first day or so of fasting, which of the following is most depleted in the body?, glycolysis is the conversion of ____., in addition to energy, what are the principal end products of cellular oxidation of carbohydrates?.


& 8 Flashcards

Term

The Cori cycle involves the interconversion of

A. lactate and pyruvate.

B. glucose and amino acids.

C. pyruvate and citric acids.

D. fatty acids and acetyl CoA.

Definition Term

In addition to energy, what are the principal end products of cellular oxidation of carbohydrates?

A. Water and carbon dioxide

B. Carbon, hydrogen, and urea

C. Indigestible fiber and nitrogen

D. Monosaccharides and amino acids

Definition

A. Water and carbon dioxide

Term

During the first few days of a fast, what energy source provides about 90% of the glucose needed to fuel the body?

A. Protein

B. Ketones

C. Glycogen

D. Triglycerides

Definition Term

After the first day or so of fasting, which of the following is most depleted in the body?

A. Glycogen

B. Fatty acids

C. Amino acids

D. Triglycerides

Definition Term

Your roommate Demetrius is participating in a weightlifting course and complains of a burning pain during workouts. You explain to Demetrius that the rapid breakdown of glucose in his muscles produces large amounts of pyruvate which leads to a fall in pH within the muscle and that the muscle responds by converting excess pyruvate to

A. lactate.

B. glycerol.

C. acetyl CoA.

D. amino acids.

Definition Term

Fatty acid oxidation results in the direct production of

A. ketones.

B. fructose.

C. pyruvate.

D. acetyl CoA.

Definition Term

Which of the following is not an aspect of glycolysis?

A. It is irreversible

B. It generates ATP

C. It occurs in the absence of oxygen

D. It generates two molecules of pyruvate for each molecule of glucose

Definition Term

What is the immediate fate of excess dietary protein in the body?

A. Stored

B. Reduced

C. Oxidized

D. Deaminated

Definition Term

Which of the following can not be formed from acetyl CoA molecules?

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A. Glucose

B. Cholesterol

C. Fatty acid

D. Carbon dioxide

Definition Term

When energy-yielding nutrients are consumed in excess, which one(s) can lead to storage of fat?

A. Fat only

B. Carbohydrate only

C. Fat and carbohydrate only

D. Fat, carbohydrate, and protein

Definition

D. Fat, carbohydrate, and protein

Term

Glycolysis is the conversion of

A. glycogen to fat.

B. glycogen to protein.

C. glucose to pyruvate.

D. glucose to glycogen.

Definition Term

What term is specific to reactions in which simple compounds are combined into more complex molecules?

A. Anabolic

B. Catabolic

C. Ergogenic

D. Gluconeogenic

Definition Term

An immediate consequence of a cellular deficiency of oxaloacetate is a slowing of

A. glycolysis.

B. the TCA cycle.

C. lactate synthesis.

D. ketone formation.

Definition Term

Approximately how many molecules of ATP are generated from the complete oxidation of one molecule of glucose?

A. 4

B. 9

C. 36

D. 130

Definition Term

A graph of the relationship between mortality (left axis) and body mass index is shaped like a(n)

A. J.

B. S.

C. backslash.

D. inverted U.

Definition Term

Jacki, who has a sedentary lifestyle, is 5’5″ tall and weighs 165 lbs. She calculated her BMI to be 27.5. She recognizes that her body weight is unhealthy and vows to improve her eating habits and begin a regular program of physical fitness. Her goal is to achieve a BMI of 22. Approximately how much weight (lbs) must she lose?

A. 21

B. 27

C. 33

D. 41

Definition Term

Jim is a 45 year old who eats fast food at least 3 times a week and smokes a pack of cigarettes each day. He just had a physical examination and was told that his body mass index is 24. In what category would Jim’s BMI be classified?

A. Obesity

B. Overweight

C. Underweight

D. Healthy weight

Definition Term

Among the following groups, which has the highest metabolic rate?

A. Females

B. Older individuals

C. Younger individuals

D. People with smaller surface areas

Definition Term

Which of the following is not a known side effect of having insufficient fat stores?

A. Infertility

B. Clinical depression

C. Elevated body temperature

D. Abnormal hunger regulation

Definition

C. Elevated body temperature

Term

What is the main explanation for the difference in basal metabolic rates between males and females of the same body weight?

A. Males are usually taller than females

B. Females have lower levels of thyroid hormones

C. Males have a higher percentage of lean body mass

D. Females have a lower percentage of adipose tissue

Definition

C. Males have a higher percentage of lean body mass

Term

In what region of the body is the storage of excess body fat associated with the highest risks for cardiovascular disease and diabetes?

A. Neck

B. Abdomen

C. Hips and thighs

D. Arms and shoulders

Definition

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Frequently Asked Questions About during the first few days of a fast what energy source provides

If you have questions that need to be answered about the topic during the first few days of a fast what energy source provides, then this section may help you solve it.

What type of energy does the body use first when it starts to fast?

Triglycerides are broken down and converted into ketones, which the body uses as its primary energy source until the fast is broken by a meal, at which point it switches back to using glucose as fuel. The body starts to release energy from its fat stores at this point.

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What metabolic activity takes place during the first two to three hours of fasting?

During the first two to three hours of a fast, fatty acids and glucose are released from adipose tissue and the liver, respectively.

What transpires to protein while one is fasting?

Additionally, short-term fasting decreases protein synthesis (14) and increases proteolysis (12, 13). The decrease in protein synthesis and increase in proteolysis during short-term fasting are caused by a decreased activation of AKT and the downstream mTOR (15).

What gives the body’s cells energy after going without food for longer than 24 hours Why does the brain require a different energy source?

The liver also converts fats to ketone bodies, which act as an alternative energy source for the brain and slow down the breakdown of body protein. After about 24 hours, the body starts to break down its protein into amino acids to synthesize glucose needed for brain and nervous system energy.

What serves as the body’s primary fuel while it is fasting?

Blood glucose levels will drop by about 20% within 12 to 24 hours, and your body will start switching from glucose to ketones. Despite the fact that glucose is still your main and preferred fuel source, you’ll start using fat stores and ketone bodies to make up the difference when your glucose reserves are nearly depleted.

What is the body’s primary source of energy right now?

Glucose serves as the majority of cells’ immediate source of energy, but other carbohydrates, fats, and proteins may also be used in some cells or at particular times to provide ATP.

What takes place in the initial hours of fasting?

Your body enters the early fasting state a few hours after eating when amino acids, fatty acids, and glycogen are converted into energy.

What type of food provides energy during the fasting stage?

The body’s primary energy source in its normal state is body glucose, which is stored in the liver and muscles; during a fast, this store of glucose is first used up to provide energy; later in the fast, once the glucose runs out, fat becomes the body’s next source of energy.

What occurs to the body while fasting?

When we fast, the body does not have access to glucose as it normally does, forcing the cells to turn to other means and materials to produce energy. In essence, fasting purges our body of toxins and forces cells into processes that are not usually stimulated when a steady stream of fuel from food is always present.

When you fast, what does your body use?

Once you’ve been fasting for 24 hours, your body will go into a condition known as ketosis where it relies on burning its fat reserves for energy. As fat cells are broken down for energy, ketone bodies are created and released into the bloodstream, which act as fuel for the brain when glucose is scarce.

Why am I so energetic while fasting?

The main advantage of fasting is that it increases the efficiency of your metabolism, as during the longer fasting period the body uses stored excess fat as a source of energy and burns this.

What is created during a fast?

The body starts gluconeogenesis, a natural process of producing its own sugar, when we fast because the body does not have the usual access to glucose, forcing the cells to turn to other means and materials to produce energy.

Does the body refuel on its own while fasting?

Once the glycogen stores are depleted, however, your body breaks down a combination of both fat and muscle to provide it with the fuel it needs. During the first few hours of a fast, your body gets its fuel from glycogen stores in your liver and muscles; the glycogen is broken down into glucose.

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