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Biology
Chapter 3 Section 3.3
Question | Answer |
---|---|
Where are the sugar-phosphate backbones and the nitrogenous bases located in the DNA double helix? | The sugar-phosphate backbones run along the outside of the double helix while the nitrogenous bases pair in the middle. |
Information is stored in DNA by varying the sequence of the four types of _________in each strand. | Nucleotides |
Match the bases that pair the DNA molecules: Adrenine Guanine | Match the bases that pair the DNA molecules: Thymine Cytosine |
Regarding the chemical nature of nitrogenous bases in DNA, this is a correct statements: | Adenine is a purine. Cytosine is a pyrimidine. |
This molecule have the ability to serve as templates to produce precise copies of themselves? | DNA |
The two classes of nucleic acids are __________and _______. Please follow capitalization conventions when you spell out the nucleic acid acronyms. | DNA (denoxyrihonucleic acid) RNA (ribonucleic acid) |
The genetic code of cells are stored in molecules of? | DNA |
These nitrogenous bases are present in RNA? | Cytosine, Adenine, Guanine, Uracli |
The following would be found at the 3' end of the backbone of a polynucleotide chain? | -OH group attached to a pentose sugar |
What are the three basic components of a nucleotide? | Nitrogenous base, pentose sugar and phosphate group |
Identify the molecule shown in the diagram: Figure 3.18, page 44 | ATP-Adenosine triphosphate |
If a DNA double helix is composed of 20% A, then what is the percentage of T? | 20% |
This diagram is showing which of the follow: Figure 3.15, page 42 (top figure) | Purines, nitrogenous bases |
What types of bonds keep the two strands of DNA joined to each other? | Hydrogen bond |
Identify functions of ATP: | To drive energetically unfavorable reactions To power transport across cell membranes To power the movement of cells |
In cells, DNA serves as a template of the synthesis of _____ whch directs the synthesis of__________. | RNA Proteins |
Organisms use sequeces of _______in their DNA to specify the sequences of _____ _______ in their proteins. | Nucleotides Amino acid |
The building blocks of nucleic acids are monomers called: | Nucleotides |
What type of bonds are responsible for the base pairing between two strands of DNA in the double helix? | Hydrogen bond |
These are how cell's are different in DNA and RNA molecules: | Only DNA is double-stranded (made of two separate strands). Only DNA contains the sugar deoxyribose. |
This types of bond connects adjacent nucleotides in a single strand of a nucleic acid. | Phosphodiester |
The two purine bases in DNA are _____ and _________. | adenine guanine |
The molecules in this diagram are which are the following: (Choose all that apply) Figure 3.15 Page 42 (bottom figure) | pyrimidines, nitrogenous bases |
In a DNA molecule, nitrogenous bases that pair up with each other are said to be? | Complementary |
Th part of this molecule shaded in purple is which of the following: Figure 3.14 Page 42 | Nitrogenous base, purine |
RNA nucleotides have the sugar _______ instead of deoxyribose and the base ______instead of thymine. | ribose uracil |
The following molecules are composed of one or more nucleotides. | ATP NAD+ RNA DNA |
In living organisms, molecules of ______are used to store and transmit the genetic information from one generation to the next, while molecules of ______are the genetic information to actually assemble proteins. | DNA RNA |
The molecule shown in this diagram is which of the following? Figure 3.14 Page 42 | Nucleotide |
During protein syntesis in living organisms, information stored in molecules of _____is transcribed to form complementary molecules of ______, which are responsible for actually assebling the protein. | DNA RNA |
ATP, FAD, and NAD+ all contain the nitrogenous base____in their structure. Spell full name | Adenine triphosphate |