Table of Contents
Which of the following metabolic processes occurs during the first 2 to 3 hours of fasting?
What metabolic process occurs during the first 2 – 3 hours of fasting? Glucose is taken from the liver and fatty acids are taken from the adipose tissue.
What is the source of the glucose needed by the brain and red blood cells when glycogen stores become depleted after a 24 hour fast?
When the glycogen reserve is depleted, glucose can be obtained from the breakdown of fats from adipose tissue. Fats are broken down into glycerol and free fatty acids, with the glycerol being turned into glucose in the liver via the gluconeogenesis pathway.
Which energy yielding nutrient is the most satiating?
A hierarchy has been observed for the satiating efficacies of the macronutrients protein, carbohydrate and fat, with protein as most satiating and fat as least satiating.
Which energy yielding nutrients are consumed in excess which ones can lead to storage of fat?
Ch 7 nutrition
|what is the most likely reason for having and abnormally high blood urea level||kidney dysfunction|
|When energy yielding nutrients are consumed in excess which one can lead to storage of fat?||fat, carbs, and protein|
|After the first day or so of fasting which of the following is most||glycogen|
What pathway is responsible for most of the ATP generated during cellular respiration?
Most ATP from glucose is generated in the electron transport chain. It is the only part of cellular respiration that directly consumes oxygen; however, in some prokaryotes, this is an anaerobic pathway. In eukaryotes, this pathway takes place in the inner mitochondrial membrane.
Is glycolysis a pathway?
Glycolysis refers to a metabolic pathway by which organisms extract energy in the form of ATP during the conversion of glucose into pyruvate and lactate. Glycolysis produces ATP required for energy-requiring reactions and processes, for example, ion transport, protein synthesis and reactions catalysed by kinases.
Which metabolic reaction occurs when a cell releases energy quizlet?
Which metabolic reaction occurs when a cell releases energy? ATP releases a phosphate group and becomes ADP.
Does the brain use fatty acids for energy?
Fatty acids do not serve as fuel for the brain, because they are bound to albumin in plasma and so do not traverse the blood-brain barrier. In starvation, ketone bodies generated by the liver partly replace glucose as fuel for the brain. … Rather, muscle retains glucose, its preferred fuel for bursts of activity.
Which category includes carbohydrates fats and proteins?
The big 3 macronutrients (macros) are fats, carbohydrates and protein. When eaten in the right ratios, these three macronutrients can improve your weight, health and overall physical well-being.
Which energy yielding nutrient is the most satiating quizlet?
Protein is most satiating.
Is protein more satiating than fat?
Weigle et al’s results clearly showed that protein is more satiating than is fat, and previous studies have shown that protein is more satiating than is carbohydrate (4).
Is protein the most satiating macro?
Protein induces prolonged ghrelin suppression and is considered to be the most satiating macronutrient. Fat, on the other hand, exhibits rather weak and insufficient ghrelin-suppressing capacity.
When energy-yielding nutrients are consumed in excess which ones are stored in body fat quizlet?
When energy-yielding nutrients are consumed in excess which one(s) can lead to storage of fat? Fat, carbohydrate, and protein. Which fat-formation pathway is the most efficient and direct?
What is the major energy carrier molecule in most cells?
ATP Adenosine 5′-triphosphate, or ATP, is the most abundant energy carrier molecule in cells. This molecule is made of a nitrogen base (adenine), a ribose sugar, and three phosphate groups.
When protein is consumed in excess of body needs and energy needs are met the excess amino acids are?
When protein consumption is in excess of body needs and energy needs are met, the excess amino acids are metabolized and the energy in the molecule is. stored as fat. stored as fat.
What are the 3 metabolic pathways?
There are three metabolic pathways that provide our muscles with energy: the phosphagen pathway, the glycolytic pathway, and the oxidative pathway. The phosphagen pathway dominates high power, short duration efforts: things that take less than 10 seconds but require a huge power output.
Which metabolic pathway is common to aerobic and anaerobic metabolism?
Glycolysis Glycolysis: Glycolysis is a part of cellular respiration and is common to both aerobic and anaerobic respiration.
What are the pathways used for anaerobic metabolism of glucose?
A review of anaerobic metabolism in the invertebrate and vertebrate phyla identified four pathway-types of interest: the lactate and opine pathways used for maintaining or increasing metabolic activity, and the glucose-succinate and aspartate-succinate pathways used for anoxia survival.
What’s glycolytic pathway?
The glycolytic pathway is one of the body’s important metabolic pathways. It involves a sequence of enzymatic reactions that break down glucose (glycolysis) into pyruvate, creating the energy sources adenosine triphosphate (ATP) and nicotinamide adenine dinucleotide (NADH).
What is the difference between glycolysis and glycolytic pathway?
Glycolysis is the sequence of enzymatic reactions which oxidize the six-carbon sugar glucose into two three-carbon compounds with the production of a small amount of adenosine triphosphate (ATP). The glycolytic pathway operates in both the presence (aerobic) and absence of oxygen (anaerobic). …
What is the name of glycolytic pathway?
The most common type of glycolysis is the EmbdenMeyerhofParnas (EMP) pathway, which was discovered by Gustav Embden, Otto Meyerhof, and Jakub Karol Parnas. Glycolysis also refers to other pathways, such as the EntnerDoudoroff pathway and various heterofermentative and homofermentative pathways.
Which metabolic reaction occurs when a cell releases energy group of answer choices?
Catabolic reactions break down larger molecules, such as carbohydrates, lipids, and proteins from ingested food, into their constituent smaller parts. They also include the breakdown of ATP, which releases the energy needed for metabolic processes in all cells throughout the body.
Which factor has the most influence on the body’s metabolic rate?
The amount of kilojoules your body burns at any given time is affected by your metabolism. Your metabolic rate is influenced by many factors including age, gender, muscle-to-fat ratio, amount of physical activity and hormone function.
Which of the following metabolic reaction releases energy?
Two types of metabolic reactions take place in the cell: ‘building up’ (anabolism) and ‘breaking down’ (catabolism). Catabolic reactions give out energy. They are exergonic. In a catabolic reaction large molecules are broken down into smaller ones.
How are fatty acids synthesized?
Fatty acid synthesis is the creation of fatty acids from acetyl-CoA and NADPH through the action of enzymes called fatty acid synthases. This process takes place in the cytoplasm of the cell. Most of the acetyl-CoA which is converted into fatty acids is derived from carbohydrates via the glycolytic pathway.
What hormone signals fat cells to release fatty acids?
In times of stress when the body requires energy, fatty acids are released from adipose cells and mobilized for use. The process begins when levels of glucagon and adrenaline in the blood increase and these hormones bind to specific receptors on the surface of adipose cells.
Which of the following lipoprotein delivers fat from the diet to tissues so is made in the enterocytes?
chylomicrons are lipoproteins produced in the enterocyte that carry fats and cholesterol from the intestine through the lymph system and to the bloodstream.
What is the common metabolic pathway of carbohydrates proteins and lipids?
1.2 The Krebs Cycle (TCA Cycle) It is the final common pathway for oxidation of carbohydrates, lipids and proteins: glucose, fatty acids and many amino acids are metabolised to acetyl-coenzyme A (CoA) or intermediates of the Krebs cycle.
Why are fats and oils more efficient in storing energy than carbohydrates or proteins?
Fats are the slowest source of energy but the most energy-efficient form of food. Each gram of fat supplies the body with about 9 calories, more than twice that supplied by proteins or carbohydrates. Because fats are such an efficient form of energy, the body stores any excess energy as fat.
How are carbohydrates and fats related chemically?
These nutrients are digested into simpler compounds. Carbohydrates are used for energy (glucose). Fats are used for energy after they are broken into fatty acids.