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
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
D
举一反三
- 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
- 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
- Our football team ______ twelve members. A: is made of B: is made up for C: is made from D: is made up of
- The research group is()6 teachers and 20 students. A: made of B: made up C: made from D: made up of
- What is the skeleton made up ofIt is made up of______.
内容
- 0
70% of the human body ____water. A: makes up B: is made of C: is made up of D: make up
- 1
Bread ______wheat. A: is made of B: is made on C: is made up D: is made in
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The house ______ two living rooms, three bedrooms, one bathroom and one kitchen. A: is made up of B: is made for C: is made up D: is made out
- 3
The bread _____________ wheat. A: is made of B: is made from C: is made up of D: is made by
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The information encoded in DNA resides in() A: phosphates in<br/>the backbone B: sugars in the<br/>backbone C: the DNA base<br/>sequence D: the sugars and<br/>phosphate groups together