Proteins

are converted directly into glucose

Proteins

are broken down into smaller peptides and amino acids

Proteins

are stored unchanged in muscle tissue

Proteins

are immediately converted to fat

To

prevent muscle loss during sleep only

To

increase total calorie intake throughout the day

To

replace carbohydrates as the primary energy source

They

should be taken by all endurance athletes without exception

Evidence

is mixed with research showing inconsistent results and methodological flaws

They

consistently improve performance in all athletes

They

are only effective when combined with carbohydrates

High

quality proteins contain more calories per gram

High

quality proteins provide all essential amino acids needed by the body

High

quality proteins contain fewer total amino acids

High

quality proteins are only found in supplement form

The

sequence of amino acids in the protein chain

The

polypeptide shape (helix, folded) adopted by different proteins

The

3D shape of the polypeptide chain

The

number of amino acids joined together

To

store energy for long-term use

To

serve as building blocks for tissues and support various metabolic functions

To

regulate body temperature

To

provide the main source of energy for daily activities

Whey,

egg white, casein, and milk

Plant

proteins and grains

Nuts

and seeds exclusively

Soy

protein isolate and legumes only

Dipeptidases,

tripeptidases, and glucose

Melanin,

thyroxine, and insulin

Pepsin,

hydrochloric acid, and aminopeptidases

Trypsin,

chymotrypsin, and carboxypeptidases