AP Biology : Identify structure and purpose of carbohydrates, lipids, proteins, and nucleic acids
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Example Questions
Example Question #101 : Identify Structure And Purpose Of Carbohydrates, Lipids, Proteins, And Nucleic Acids
Which of the following was not present in large amounts in Earth's early atmosphere?
Ammonia
Carbon
Oxygen
Hydrogen
Methane
Oxygen
Earth's early atmosphere contained carbon, 
Example Question #102 : Identify Structure And Purpose Of Carbohydrates, Lipids, Proteins, And Nucleic Acids
Which of the following is not true regarding RNA?
RNA is made by transcribing DNA
RNA is single stranded
RNA nucleotides contain one deoxyribose sugar
RNA nucleotides contain one ribose sugar
RNA contains uracil instead of thymine
RNA nucleotides contain one deoxyribose sugar
RNA stands for ribonucleic acid, and each RNA nucleotide contains one phosphate, one nitrogenous base (either adenine, uracil, cytosine, or guanine), and one ribose sugar. RNA does not contain a deoxyribose sugar as seen in DNA.
Example Question #103 : Identify Structure And Purpose Of Carbohydrates, Lipids, Proteins, And Nucleic Acids
A DNA sequence is read in the 5' to 3' direction, whats do these numbers refer to?
The linkages between the sugar and the nitrogenous base
The location of the all the thymine bases
The linkages between the phosphate group and the nitrogenous base
The linkages between the phosphate group and the sugar
The direction of the turn of the DNA helix
The linkages between the phosphate group and the sugar
Nucleotides are linked together to form nucleic acids by bonds between the phosphate groups and ribose sugars. A phosphate group is bonded the 5' carbon of one ribose and the 3' carbon of the next ribose, leading to the 5' to 3 directionality of DNA.
Example Question #104 : Identify Structure And Purpose Of Carbohydrates, Lipids, Proteins, And Nucleic Acids
What are the three parts of a nucleotide?
A glycerol head and a fatty acid tail
Afive-carbon sugar, a phosphate group, and a nitrogenous base
A five-carbon sugar, a phosphate group, and a carbon-hydrogen chain
A glycerol/phosphate head and nitrogenous base
Afive-carbon sugar, a phosphate group, and a nitrogenous base
A nucleotide is made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base. Lipids consist of a glycerol and fatty acid chains
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