举一反三
- Cell organelles are located within the ____ of the cell. A: nucleus B: cytoplasm C: Cell membrane D: lysosomes
- 中国大学MOOC: Which of the following is a germ cell?
- There are two types of endocytosis, phagocytosis (cell eating) and pinocytosis (cell drinking)._
- The myelin sheath of the peripheral nerve consists of A: Schwann cell membrane and cytoplasm B: only Schwann cell cytoplasm C: multiple layers of Schwann cell membrane D: only the lipid of Schwann cell membrane E: Schwann cell membrane and basal lamina
- 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.
内容
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The concentration of potassium ions in the cell ( ) is the concentration outside the cell, while the concentration of sodium ions in the cell ( ) is the concentration outside the cell. A: Greater than B: Bigger than smaller than C: Less than D: Less than, greater than
- 1
A plasma cell has developed from a B cell. Compared to the cell from which it was derived, the plasma cell A: displays more pMHC Class II B: is a more efficient antigen presenting cell C: recognizes different epitopes D: releases soluble immunoglobulins E: undergoes more efficient isotype switching
- 2
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
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构成胃黏膜上皮的细胞是<br/>() A: chief<br/>cell(zymogenic cell) B: parietal cell(oxyntic cell) C: mucous<br/>neck cell D: surface<br/>mucous cell E: Paneth<br/>cell
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Which cell is the most abundant cell in the epidermis? A: Merkel cell B: Keratinocyte C: Langerhans cell D: Melanocyte