nucleic acids
nucleic acids are molecules that contain carbon, hydrogen, oxygen, nitrogen and phosphorus. there are two types of nucleic acids: dna (deoxyribonucleic acid) and rna (ribonucleic acid). nucleic acids are polymers that are made of monomers called nucleotide. a nucleotide is comprised of 3 parts: a sugar, a phosphate group and a nitrogenous base. nucleic acids contain the instruction to build proteins.
image of nucleotide structure: phosphate group, sugar, nitrogen base
nucleic acids are different from the other macromolecules discussed. carbohydrates, lipids and proteins have many different structures and functions, whereas nucleic acids only have one- to code for proteins.
vocabulary review
match each term with its appropriate definition.
1. ____ monomer a. the bond that holds amino acids together.
2. ____ polymer b. a smaller part of a larger molecule; subunit
3. ____ carbohydrate c. made of dna and rna
4. ____ fatty acid d. a large molecule comprised of smaller monomers
5. ____ protein e. the monomer of a nucleic acid
6. ____ amino acid f. made of c, h, and o and includes starches and sugars
7. ____ lipid g. made of c, h, and o and includes waxes, oils, and cholesterol.
8. ____ nucleotide h. molecules that contain c, h, o, and n
9. ____ nucleic acid i. a polymer that is comprised of amino acids
10. ____ peptide bond j. chains of carbon atoms bonded to hydrogen atoms (found in lipids)

Question

nucleic acids
nucleic acids are molecules that contain carbon, hydrogen, oxygen, nitrogen and phosphorus. there are two types of nucleic acids: dna (deoxyribonucleic acid) and rna (ribonucleic acid). nucleic acids are polymers that are made of monomers called nucleotide. a nucleotide is comprised of 3 parts: a sugar, a phosphate group and a nitrogenous base. nucleic acids contain the instruction to build proteins.
image of nucleotide structure: phosphate group, sugar, nitrogen base
nucleic acids are different from the other macromolecules discussed. carbohydrates, lipids and proteins have many different structures and functions, whereas nucleic acids only have one- to code for proteins.
vocabulary review
match each term with its appropriate definition.
1.  ____ monomer  	a.  the bond that holds amino acids together.
2.  ____ polymer  	b.  a smaller part of a larger molecule; subunit
3.  ____ carbohydrate  	c.  made of dna and rna
4.  ____ fatty acid  	d.  a large molecule comprised of smaller monomers
5.  ____ protein  	e.  the monomer of a nucleic acid
6.  ____ amino acid  	f.  made of c, h, and o and includes starches and sugars
7.  ____ lipid  	g.  made of c, h, and o and includes waxes, oils, and cholesterol.
8.  ____ nucleotide  	h.  molecules that contain c, h, o, and n
9.  ____ nucleic acid  	i.  a polymer that is comprised of amino acids
10. ____ peptide bond  	j.  chains of carbon atoms bonded to hydrogen atoms (found in lipids)

Accepted Answer

# Brief Explanations:
1. For "monomer", the definition is a smaller part of a larger molecule (subunit), so match with b.
2. "polymer" is a large molecule from smaller monomers, match with d.
3. "carbohydrate" is made of C, H, O (starches, sugars), match with f.
4. "fatty acid" are carbon - hydrogen chains in lipids, match with j.
5. "protein" is a polymer of amino acids, match with i.
6. "amino acid" is the monomer of protein, but here we follow the options. Wait, no, the monomer of protein is amino acid, but in the options, for amino acid, we need to see. Wait, the options: amino acid's role - but the correct match for amino acid is that it's the monomer of protein, but in the options, let's re - check. Wait, the 6th term is amino acid. The options: a is peptide bond, b is monomer, c is nucleic acid (made of DNA/RNA), d is polymer, e is nucleotide (monomer of nucleic acid), f is carbohydrate, g is lipid, h is protein (molecules with C, H, O, N), i is protein (polymer of amino acids), j is fatty acid. Wait, no, I think I made a mistake earlier. Let's re - do:

1. monomer: b (smaller part, subunit)
2. polymer: d (large from monomers)
3. carbohydrate: f (C, H, O, starches/sugars)
4. fatty acid: j (carbon - H chains in lipids)
5. protein: i (polymer of amino acids)
6. amino acid: h? No, h says "Molecules that contain C, H, O, and N" - protein. Wait, no, amino acid contains C, H, O, N. Wait, the option h: "Molecules that contain C, H, O, and N" - that's protein? No, amino acids also contain C, H, O, N. Wait, maybe the 6th term (amino acid) should match with... Wait, the 10th term is peptide bond (a: bond between amino acids). Let's correct:

1. monomer: b
2. polymer: d
3. carbohydrate: f
4. fatty acid: j
5. protein: i
6. amino acid: h? No, h is "Molecules that contain C, H, O, and N" - protein is a polymer of amino acids, and amino acids have C, H, O, N. Wait, maybe the 6th term (amino acid) is the monomer of protein, but in the options, the only one related to amino acid's identity is h? No, I think I messed up. Let's start over:

Term 1: monomer - definition b (smaller part, subunit)
Term 2: polymer - definition d (large from monomers)
Term 3: carbohydrate - definition f (C, H, O, starches/sugars)
Term 4: fatty acid - definition j (carbon - H chains in lipids)
Term 5: protein - definition i (polymer of amino acids)
Term 6: amino acid - definition h? No, h is "Molecules that contain C, H, O, and N" - amino acids have C, H, O, N, and protein (which is made of amino acids) also has C, H, O, N. Wait, maybe the 6th term (amino acid) is the monomer, but the option for monomer is b, but b is already used for term 1. Wait, no, term 1 is monomer (b), term 6 is amino acid. The correct match for amino acid is that it's the monomer of protein, but in the options, the only option left for amino acid: let's check the options again.

Options:
a. peptide bond (bond between amino acids)
b. monomer (subunit) - used for term 1
c. nucleic acid (DNA/RNA) - term 9
d. polymer - term 2
e. nucleotide (monomer of nucleic acid) - term 8
f. carbohydrate - term 3
g. lipid - term 7
h. molecules with C, H, O, N - amino acids and proteins. But amino acid is the monomer, so maybe h is for protein? No, protein is a polymer. Wait, I think the initial answers for 4 and 5 were wrong. Let's correct:

4. fatty acid: j (chains of C - H in lipids)
5. protein: i (polymer of amino acids)
6. amino acid: h? No, h is "Molecules that contain C, H, O, and N" - amino acids do, and protein (the polymer) also does. But the monomer of protein is amino acid, so maybe the correct match for amino acid is that it's the monomer, but b is already taken. Wait, no, the problem has some pre - filled answers (4 and 5 have "I" which is probably a typo, maybe "j" and "i"?). Let's assume the correct matches:

1. monomer - b
2. polymer - d
3. carbohydrate - f
4. fatty acid - j
5. protein - i
6. amino acid - h (since amino acids have C, H, O, N)
7. lipid - g (made of C, H, O, includes waxes, oils, cholesterol)
8. nucleotide - e (monomer of nucleic acid)
9. nucleic acid - c (made of DNA and RNA)
10. peptide bond - a (bond between amino acids)

# Answer:
1. b
2. d
3. f
4. j
5. i
6. h
7. g
8. e
9. c
10. a

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