Educational worksheet illustrating protein synthesis using dietary amino acids from chicken breast and chocolate milk.

Let’s solve this step by step.

We are given two food servings: chicken breast and chocolate milk. Each is shown as a chain of amino acid circles. We need to count how many of each amino acid appear in BOTH servings combined, then fill in the tally table at the bottom.

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Step 1: Count amino acids in “Serving of chicken breast”

Looking at the chicken breast diagram (top chain):

From left to right:

- Val
- Ile
- Ile
- His
- Gln
- Ala
- Leu
- Arg
- Cys
- His
- Phe
- Pro
- Phe
- Phe

Wait — let’s list them carefully in order from the image:

Actually, looking again — the chicken breast chain starts with:

Val → Ile → Ile → His → Gln → Ala → Leu → Arg → Cys → His → Phe → Pro → Phe → Phe

That’s 14 amino acids total for chicken breast.

Now let’s count each type:

- Val: 1
- Ile: 2
- His: 2
- Gln: 1
- Ala: 1
- Leu: 1
- Arg: 1
- Cys: 1
- Phe: 3
- Pro: 1

(No Thr, Trp, Tyr, Asp, Lys in chicken breast)

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Step 2: Count amino acids in “Serving of chocolate milk”

Chocolate milk chain (bottom diagram):

Left to right:

Thr → Trp → Tyr → Ala → Ala → Asp → Gln → Ile → Trp → Pro → Phe → Leu → Lys → His → Pro

Wait — let’s list all clearly:

Starting from left:

1. Thr
2. Trp
3. Tyr
4. Ala
5. Ala
6. Asp
7. Gln
8. Ile
9. Trp
10. Pro
11. Phe
12. Leu
13. Lys
14. His
15. Pro

That’s 15 amino acids.

Now count each type:

- Thr: 1
- Trp: 2
- Tyr: 1
- Ala: 2
- Asp: 1
- Gln: 1
- Ile: 1
- Pro: 2
- Phe: 1
- Leu: 1
- Lys: 1
- His: 1

(No Val, Arg, Cys in chocolate milk)

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Step 3: Add both servings together for total tally

Now combine counts from chicken breast + chocolate milk.

Let’s go row by row in the tally table:

Valine (Val)
Chicken: 1
Milk: 0
→ Total: 1

Isoleucine (Ile)
Chicken: 2
Milk: 1
→ Total: 3

Histidine (His)
Chicken: 2
Milk: 1
→ Total: 3

Glutamine (Gln)
Chicken: 1
Milk: 1
→ Total: 2

Alanine (Ala)
Chicken: 1
Milk: 2
→ Total: 3

Leucine (Leu)
Chicken: 1
Milk: 1
→ Total: 2

Arginine (Arg)
Chicken: 1
Milk: 0
→ Total: 1

Cysteine (Cys)
Chicken: 1
Milk: 0
→ Total: 1

Phenylalanine (Phe)
Chicken: 3
Milk: 1
→ Total: 4

Proline (Pro)
Chicken: 1
Milk: 2
→ Total: 3

Threonine (Thr)
Chicken: 0
Milk: 1
→ Total: 1

Tryptophan (Trp)
Chicken: 0
Milk: 2
→ Total: 2

Tyrosine (Tyr)
Chicken: 0
Milk: 1
→ Total: 1

Aspartic acid (Asp)
Chicken: 0
Milk: 1
→ Total: 1

Lysine (Lys)
Chicken: 0
Milk: 1
→ Total: 1

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Double-check totals:

Chicken had 14, milk had 15 → total 29 amino acids.

Add up our tallies:

1 (Val) + 3 (Ile) + 3 (His) + 2 (Gln) + 3 (Ala) + 2 (Leu) + 1 (Arg) + 1 (Cys) + 4 (Phe) + 3 (Pro) + 1 (Thr) + 2 (Trp) + 1 (Tyr) + 1 (Asp) + 1 (Lys) =

Let’s add:

1+3=4; +3=7; +2=9; +3=12; +2=14; +1=15; +1=16; +4=20; +3=23; +1=24; +2=26; +1=27; +1=28; +1=29 ✔

Perfect — matches total number of amino acids.

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Final Answer:

Valine (Val) __1__
Isoleucine (Ile) __3__
Histidine (His) __3__
Glutamine (Gln) __2__
Alanine (Ala) __3__
Leucine (Leu) __2__
Arginine (Arg) __1__
Cysteine (Cys) __1__
Phenylalanine (Phe) __4__
Proline (Pro) __3__
Threonine (Thr) __1__
Tryptophan (Trp) __2__
Tyrosine (Tyr) __1__
Aspartic acid (Asp) __1__
Lysine (Lys) __1__