A: window
B: key
C: doo
D: lock
举一反三
- 中国大学MOOC: Insulin acts like a to open up a cell so that the circulating glucose can get inside the cell.
- 2.What is the key to open up the cell so that the circulating glucose can get inside the cell A: certain receptors B: the rising glucose levels C: insulin D: ketone
- According to the video, which of the following is wrong A: Insulin binds to specific receptors and acts like a key to open a pathway for glucose to enter the cell. B: Type 2 diabetes is caused by insufficient insulin or insulin resistance or both. C: When blood sugar rises, islet A cells sense it and release insulin to regulate blood sugar. D: When cells can't use glucose, they break down fats and proteins, producing ketones.
- It is important to maintain the balance of water inside and outside the cell() A: glucose B: albuminNa+ C: K+ D: Na+
- If the concentration of a solution outside a cell is less concentrated than inside the cell so that the cell gains water to its environment, the outside solution is said to be ____ to the cell contents. A: hypertonic B: in equilibrium C: isotonic D: hypotonic
内容
- 0
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
- 1
Cell organelles are located within the ____ of the cell. A: nucleus B: cytoplasm C: Cell membrane D: lysosomes
- 2
Which of the following are incorrectly paired? ()<br/>A. A: cell: glucagon <br/> B: cell: insulin <br/> C: cell: somatostatin <br/> D: cell: gastrin <br/> E: cell: secretin
- 3
Which of the following about cell cycle is NOT true？（ ） A: We can get the synchronization of the cells by blocking DNA synthesis by TdR. B: Cytokinesis of animal cells is mediated by a contractile ring of actin and myosin II filaments. C: Meiosis II is similar to meiosis I. D: According to the characteristics of cell division, cell groups can be divided into three types, such as Cycling cells, Terminally Differentiated cells and Quiescent cell.
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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.