WorksheetsProtein
Total questions: 18
Worksheet time: 7mins
Which of the follow elements is found in all proteins?
Nitrogen
Helium
Magnesium
Sulfur
How many calories per gram do proteins provide?
2
4
7
9
Which part of the amino acid affects how it functions and relates to other amino acids?
Central carbon
COOH (carboxylic acid)
R group (side chain)
NH2 (amine group)
When proteins are exposed to heat, acid, base, or mechanical disruption and lose their shape
Acidification
Denaturation
Transamination
Disruption
Where does chemical digestion (hydrolysis) of protein begin?
Mouth
Stomach
Small intestine
Large intestine
Which acid in the stomach converts pepsinogen to the active enzyme pepsin?
Citric acid
Lactic acid
Acetic acid
Hydrochloric acid
In what form are MOST proteins absorbed?
Whole proteins
Polypeptides
Peptides
Amino acids
This step in protein synthesis occurs in the cell's nucleus and produces mRNA from a DNA template.
Translation
Transcription
Which cell organelle is the protein-making factory?
Nucleus
Golgi body
Ribosome
Mitochondria
Which type of amino acid can the body synthesize for itself?
Nonessential amino acids
Essential amino acids
No amino acids
All amino acids
All of the follow are roles of proteins in the body, EXCEPT:
Fluid Balance Regulators
Enzymes
Hormones
Building blocks for body structures
Primary cell membrane component
Where are amino acids stored?
Adipose tissue
Small intestines
Brain
Amino acid pools
When protein is being broken down and nitrogen excretion is greater than intake, a person is in a state of ____________ nitrogen balance.
Positive
Negative
Equilibrium
Protein is easily stored in the body.
True
False
When a nonessential amino acid is not available, body cells can make it from this compound.
Fatty acid
Lactic acid
Keto acid
Ammonia
What toxic compound does deamination of amino acids produce?
Urea
Keto acid
Ammonia
Glucose
Which is a source of a complete (high-quality) protein?
Soy
Wheat bread
Broccoli
Nuts
How much protein do you need each day (RDA for inactive adults)?
30 g
150 g
0.8 g/kg body weight
1 g/kg body weight
