Cell organelles are located within the ____ of the cell. A: nucleus B: cytoplasm C: Cell membrane D: lysosomes

Two-cell mature pollen consists of a vegetative cell and a germ cell.

When a cell is placed in higher water potential solution, . A: Water enters the cell. B: Water exits the cell toward the solution. C: Water enters and solute exits the cell. D: None of the above is correct.

The<br/>main morphological characteristics of serous nuclei are as follows() A: The<br/>nucleus is round, at the bottom of the cell base. B: The<br/>nucleus is oblate, at the bottom of the cell base. C: The<br/>nucleus is round, at the center of the cell. D: The<br/>nucleus is oblate, at the center of the cell. E: The<br/>nucleus is at the top of the cell.

Two-cell mature pollen consists of a vegetative cell and a germ cell. A: 正确 B: 错误

The envelope of an animal virus is derived from the____of its host cell.( ) A: cell wall B: cell membrane C: glycolyx D: receptors

Mitosis is the normal process (by which) a cell divides, (each) new cell (ending) up with (a) same number of chromosomes as the parent cell.（） A: by which B: each C: ending D: a

Animals, _______, and some fungi consist of diverse eukaryotic cell types, all derived from a single fertilized egg cell.

In a typical communication between cells, the signaling cell produces a particular type of intracellular signal molecule that is detected by the target cell.

The envelope of an animal virus is derived from the ______ of its host cell. A: cell wall B: glycoproteins C: membrane D: receptors