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Flashcards in Protein Deck (19)
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1

What makes protein chemically different than fat and CHO?

protein has Nitrogen as well as C, H, and O

2

Define dipeptide, tripeptide, and polypeptide

dipeptide: 2 amino acids
Tripeptide: 3 amino acids
Polypeptide: 3-100 amino acids

3

How many amino acids are there?

9 out of 20 total are essential

4

What makes the structure of one amino acid different form another?

side groups (called r groups) are what make each amino acid differ in side, shape and electric charge

5

What are the functions of proteins from our bodies?

provides energy

6

What are the functions of proteins from our diets?

uses amino acids to make proteins and if there is excess amino acids the body will metabolize in another way

7

What are the two food groups that has the most protein serving?

Dairy and meat, fish and nuts

8

Complete vs. Incomplete proteins

complete: contains ample amount of all 9 essential amino acids and is typical in animal foods
incomplete: deficient or low in one or more essential amino acid

9

Example of protein complementation

combining two lower quality protein foods to get all 9 amino acids

10

What contributes to the amino acid pool?

cell breakdown and diet

11

What are the 5 potential ways the body can use amino acids?

1. Make proteins needed in body
2. Convert into neurotransmitters
3. Convert into glucose
4. Convert into fat
5. Use for energy

12

Demination

separating the amino group (NH2) from the carbon skeleton

13

What happens to nitrogen once it is removed

use of energy

14

What is the general recommendation for % of total cals from protein?

10-20%, about 50-100 grams per day

15

How many grams of protein is found in common food?

Meats: 7-9g
Milk and Dairy: 6-8g
Vegetables: 2g
Beans: 5-10g
Grains: 3-5g

16

Which scenarios result in increased protein requirements?

pregnancy, athletes and regular exercisers, growth, illness or injury, low calorie diets

17

What are potential nutrient deficiencies for vegetarians and vegans?

protein, iron, zinc, calcium, B12, vitamin D

18

What is the only proven health benefit for soy?

source of higher quality proteins and contains no cholesterol or saturated fats

19

Bottom line regarding high protein diets

High protein diets may result in quicker weight loss