Question

1. this image is an example of a phospholipid. which part of a phospholipid is hydrophobic? a. the phosphate \head\ b. the lipid \tails\ 7. this image is an example of a phospholipid. which part of a phospholipid is hydrophilic? a. the phosphate \head\ b. the lipid \tails\ 8. identify the part of the membrane identified as a. a. carbohydrates b. protein c. cholesterol d. phospholipid 9. identify the monomer shown. a. amino acid b. monosaccharide c. nucleotide d. glucose molecule

Explanation:

• Question 6: Phospholipids have a phosphate head (hydrophilic) and lipid tails (hydrophobic). So, the lipid tails are hydrophobic.
• Question 7: The phosphate head of a phospholipid is hydrophilic (water - loving) due to its polar nature.
• Question 8: In a cell membrane, phospholipids (D) form the bilayer. Carbohydrates (A) are often on the surface for cell - cell recognition, proteins (B) have various functions like transport, and cholesterol (C) provides membrane fluidity regulation. But if the structure is a basic membrane component forming the bilayer, it's phospholipid.
• Question 9: A nucleotide is composed of a phosphate group, a deoxyribose sugar (in DNA nucleotides), and a nitrogenous base. An amino acid is the monomer of proteins, a monosaccharide (like glucose, which is a type of monosaccharide) is the monomer of carbohydrates.

Answer:

1. B. the lipid “tails”
2. A. The Phosphate “head”
3. D. Phospholipid
4. C. Nucleotide