Multiple choice

Which of the following statements is/are incorrect?

A. Plasma membrane is composed of lipids and proteins. B. The cell wall is composed of lipids and phospholipids in plants and is located outside the cell membrane. C. The nucleus in eukaryotes is covered by a single-layered membrane. D. Photosynthesis occurs in chromoplasts.

  1. Only A

  2. Both A and B

  3. Both B and C

  4. Both C and D

  5. Only D
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A. Cells are enclosed by a plasma membrane composed of lipids and proteins. B. In plant cells, the cell wall composed mainly of cellulose is located outside the cell membrane. In animal cells, the cell wall is mainly composed of lipids and phospholipids. C. The nucleus in eukaryotes is separated from the cytoplasm by a double-layered membrane and it directs the life processes of the cell. D. Most plant cells have large membranous organelles called plastids, which are of two types - chromoplasts and leucoplasts. Chromoplasts that contain chlorophyll are called chloroplasts and they perform photosynthesis.

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