cytoplasm

/ˈsaɪtəʊplæzəm/ (bre, ipa) · /ˈsaɪtəʊplæzəm/ (ame, ipa) · /ˈsī-tə-ˌpla-zəm/ (ame, mw)

cytoplasm — noun

1. the thick, jelly-like material that fills the inside of a living cell, sitting b

1.名詞C1
釋義

the thick, jelly-like material that fills the inside of a living cell, sitting between the outer cell membrane and the central nucleus, and holding the smaller parts of the cell in place.

例句

Under the microscope, Hoa could see tiny green dots moving slowly through the cytoplasm of each leaf cell.

moving through the cytoplasm — typical 'through/in the cytoplasm' pattern

The biology teacher said most chemical reactions in a cell happen in the cytoplasm, not in the nucleus.

contrastive 'in the cytoplasm, not in the nucleus'

同義詞
  • cytosol

    the watery fluid part of cytoplasm only, without the organelles

  • protoplasm

    older umbrella term covering cytoplasm plus the nucleus; rarely used in modern biology

反義詞
  • nucleus

    the cell's control centre; surrounded by, but not part of, the cytoplasm

用法筆記

Uncountable; never used with 'a' or in the plural. Typically appears after prepositions 'in the cytoplasm' or 'through the cytoplasm', and is contrasted with 'the nucleus' or 'the cell membrane'.

常見錯誤

❌There are many cytoplasms in the leaf.
✅There is a lot of cytoplasm in each leaf cell.
💡cytoplasm is uncountable; talk about 'a lot of' or refer to the cells instead.
❌The nucleus is part of the cytoplasm.
✅The nucleus sits inside the cell, separated from the cytoplasm by a membrane.
💡the nucleus is NOT part of the cytoplasm; they are distinct regions.