Question

quiz - macromolecules an... 0:00:42 elapsed question 1 (1 point) cell membrane 1) carbohydrates 2) proteins 3) nucleic acids 4) lipids question 2 (1 point) chloroplasts 1) carbohydrates 2) proteins 3) nucleic acids

Explanation:

Question 1:

The cell membrane is mainly composed of lipids (phospholipids form the bilayer), proteins (for transport, signaling, etc.), and also has carbohydrates (as glycoproteins or glycolipids for cell recognition). So the correct options are 1) Carbohydrates, 2) Proteins, 4) Lipids. Nucleic acids are not a major component of the cell membrane.

Chloroplasts are organelles in plant cells. They contain proteins (for enzyme functions, structural roles), nucleic acids (DNA to code for chloroplast - related proteins), and also have carbohydrates (e.g., in the stroma or as part of cell wall - related components in the surrounding). So the correct options are 1) Carbohydrates, 2) Proteins, 3) Nucleic Acids.

Answer:

1. Carbohydrates, 2) Proteins, 4) Lipids

Question 2: