举一反三
- Researchers have suggested that a foreign sugar molecule on a cell surface might stimulate the _________ to destroy it.
- The reaction catalyzed by lysozyme is a ____________: the enzyme adds a molecule of water to a single bond between two adjacent sugar groups in the polysaccharide chain, thereby causing the bond to break.
- The backbone of a DNA molecule is<br/>_________.() A: made up of sugars alone B: made up of nitrogenous bases alone C: made up of phosphate groups alone D: made up of alternating phosphate and<br/>sugar groups
- The backbone of a DNA molecule is: ( ) A: made up of sugars B: made up of nitrogenous bases C: made up of phosphate groups D: made up of alternating phosphate and sugar groups E: made up of alternating sugars and nitrogenous base
- Which of the following is the product of the ED pathway ( ). A: 1 molecule of ATP B: 1 molecule of NADPH + H C: 1 molecule of NADH + H D: 2 molecules of ethanol
内容
- 0
The<br/>backbone of a DNA molecule is () A: made<br/>up of sugars B: made<br/>up of nitrogenous bases C: made<br/>up of phosphate D: made<br/>up of alternating phosphate and sugar groups E: made<br/>up of alternating sugars and nitrogenous base
- 1
What is the most appropriate definition of conformation? A: The chemical formula of a molecule B: The fixed arrangement of atoms dictated by the bonds of a molecule C: The three dimensional structure a molecule is most likely to adopt, given its chemical formula D: The (potentially flexible) spatial arrangement of atoms around fixed bonds in a molecule
- 2
Sugar figurine is divided into two types: blowing sugar figurine and drawing sugar figurine by different manufacture process.
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2.1.3 to make Qifeng cake, adding ( ) is beneficial to protein baking. A: Soft white sugar B: White sugar C: Sugar powder
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A newly synthesized RNA molecule is called a _______________.