FNH 250 Study Guide - Final Guide: Pancreatic Juice, Peanut Butter, Phaseolus Lunatus

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copperswan658

5 Jul 2017

School

UBC

Department

Food, Nutrition and Health

Course

FNH 250

Professor

Gail Hammond

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Document Summary

At the end of the chapter, it is expected that you should be able to: Describe the basic structure of proteins and how proteins differ from carbohydrates and fat. Amino acid is the basic building block of protein, it contains a hydrogen atom, an r group (side chain), a carboxyl group, and an amino group attached to the central carbon atom. Different side chains give amino acids different properties. Instead of being made up of repeating units of the same molecule like glucose in cho, protein is a sequence of different amino acids. Unlike carbohydrates and fat which are major sources of energy, protein is a minor source of energy. Excess protein are not stored in the body. Distinguish between essential and non-essential amino acids from a nutritional perspective. Essential amino acids are amino acids that the body cannot synthesize at all or in adequate quantities to meet body needs.

Related Questions

For each of the following sentences, fill in the blanks with the best word or phrase selected from the list below. Not all words or phrases will be used; each word or phrase should be used only once. Proteins are ______________ built from amino acids, which each have an amino group and a _____________ group attached to the central _______________. There are twenty possible _______________ that differ in structure and are generally referred to as âR.â In solutions of neutral pH, amino acids are _______________, carrying both a positive and negative charge. When a protein is made, amino acids are linked together through _______________, which are formed by condensation reactions between the carboxyl end of the last amino acid and the ___________________ end of the next amino acid to be added to the growing chain.

a: amino	b: ionized	c: polypeptides
d: alpha-carbon	e: length	f: protein
g: carbon	h: noncovalent	i: R group
j: carboxyl	k: peptide bonds	l: side chains

m: hydroxide

indigofrog836

1. Polypeptide strands is the active form of a digestive enzyme in the stomach that breaks polypeptide chains into smaller polypeptides.

2. Cleavage of proteins by pepsin in the stomach results in formation of pepsinogen which get broken down further in the small intestine.

3. An amino acid chain made up of three amino acids joined together is called a tripeptide.

4. Dipeptide describes an amino acid chain made up of two amino acids joined together.

5. The 20 different amino acids are the building blocks used for protein synthesis.

6. Amino acid pools are stockpiles found in the blood and other cells of the body that can be used to build new proteins.

7. The continual process of degrading and synthesizing protein is called protein turnover.

8. The stomach produces pepsin, which denatures protein.

9. Denaturation occurs when a protein is exposed to heat, acid, bases, or mechanical agitation resulting in unfolding of the protein, though the peptide bonds remain intact.

10. The part of an amino acid that contains nitrogen is called the amine group.

11. The acid group is also known as the carboxyl group.

12. Single amino acids that are absorbed in the small intestine travel to the liver via the portal vein.

Please correct these sentences AS SOON AS POSSIBLE.. Some of them are not correct and I didn't figure out what are they!

violetdog828

Identify the correct statement regarding metabolism.

	A.	Excess carbohydrates in the diet can be converted into amino acids by the body.
	B.	Excess amino acids can be converted into body fat.
	C.	Excess carbohydrates can be stored as glycogen but cannot be converted into body fat.
	D.	Excess alcohol intake cannot be converted to and stored as body fat.

Keo and Subi ate lunch together. Keo had a roast beef sandwich (30 g PRO, 50 g CHO, 20 g FAT), whereas Subi had a chicken breast sandwich (25 g PRO, 45 g CHO, 25 g FAT). Who ingested more kilocalories, assuming each ate nothing but a sandwich?

	A.	They ingested nearly equal amounts of kilocalories.
	B.	Keo ate far more kilocalories than Subi.
	C.	There are insufficient data to answer the question.
	D.	Subi ate far more kilocalories than Keo.

Production of energy from the absorbed components of protein, fat, and carbohydrate occurs primarily in which part of the cell?

	A.	selectively-permeable membrane
	B.	cytoplasm or cytosol
	C.	mitochondrion
	D.	fat droplet

byzantiumfrog217

FNH 250 Study Guide - Final Guide: Pancreatic Juice, Peanut Butter, Phaseolus Lunatus

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