举一反三
- Complex<br/>of DNA and proteins that makes up the chromosomes in a eukaryotic<br/>cell is called ______ .
- Interferons are a family of eukaryotic cell proteins classified according to the cell of origin. IFN-ɑ and IFN-β are produced by a variety of virus-infected cells. They A: act on target cells to inhibit viral replication B: act directly on the virus C: are virus-specific D: all of above
- Short regions of α helix are especially abundant in proteins that are embedded in cell __________, such as transport proteins and receptors.
- Membrane proteins are the functional units of cell membrane.
- Proteins are the principal constituents of cells and determine not only cell structure but also cell function.
内容
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Motor proteins produce directed movement in eukaryotic cells through conformational changes not linked to the hydrolysis of ATP to ADP.
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The sum of all the proteins functioning in a given cell is the cell's ____________, and proteomics is the systematic characterization of this protein complement under a specific set of conditions.
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Animals, _______, and some fungi consist of diverse eukaryotic cell types, all derived from a single fertilized egg cell.
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Yeast mutants that are defective in their ability to complete cell division have led to the discovery of many genes that control the cell-division cycle—the so-called Cdc genes—and have provided a detailed understanding of how these genes, and the proteins they encode, actually work.
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Which of the following statements about non-collagen adhesive proteins is wrong? A: The fibronectin mediates cell to cell adhesion. B: The molecular structure of fibronectin exhibits multi- domains for specific function. C: RGD tripeptide is the smallest structural unit of non-collagen binding proteins in ECM for cell to associate. D: Laminin is a hetero-trimmer protein composed of three polypeptide chains of α、β and γ.