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Biology 10B Ch 12
Question | Answer |
---|---|
___________, guanine (G), cytosine (C), and thymine (T) are four _________________ in DNA. | Adenine (A), nitrogenous bases |
In DNA, ________ always forms hydrogen bonds with guanine (G). | Cytosine (C) |
The sequence of ___________ carries the genetic information of an organism. | Nucleotides |
Chargaff's data states that the number of ______ bases equals the number of pyrimidine bases in DNA. | Purine |
The twisted ladder shape of DNA is called a ____________. | Double helix |
DNA is the ________________ of all organisms. | Genetic material |
The pyrimidine bases have a ___________ structure. | Single-ring |
The purine bases have a ___________ structure. | Double-ring |
DNA and RNA are the two _____________ found in living cells. | Nucleic acids |
DNA supercoils to make up the structure known as a __________. | Chromosome |
Unwinds in multiple areas as DNA is replicated | Eukaryotic DNA |
The DNA of prokaryotes | Circular DNA |
Keep the strands of DNA separate during replication | Single-stranded binding proteins |
Elongates as DNA unwinds and is replicated continuously | Leading strand |
Unwinds the double helix | DNA helicase |
(T or F) The central dogma of biology, or the mechanism of reading and expressing genes in all living things, can bge expressed as follows: DNA --- RNA --- proteins. | True |
(T or F)The process of the synthesis of mRNA from DNA is call translation. | False, transcribtion |
One the ____ is synthesized, it leaves the nucleus and enters the _________. | mRNA, cytoplasm |
The 5' end of the mRNA connects to the ________, where the code is read and translated to make a(n) _______ in a process called ___________. | Ribosome, protein, translation |
In translation, ____ interprets the mRNA codon sequence. | tRNA |
Once the mRna is associated with the ribosome, a tRNA with the __________ CAU wil bind to the mRNA ___________ AUG. | Anti codon, start codon |
DNA is unzipped in the nucleus. | mRNA |
RNA polymerase moves down the ____ DNA strand as the DNA unwinds. | Template |
Processed mRNA moves out of the nucleus and into the _________. | Translation |
The ____ in the ribosome catalyzes the bonds between amino acids. | rRNA |
The ribosome moves along the mRNA until it reaches a __________. | Stop Codon |
The ____ is released from the tRNA, and the ribosome sub units disassemble. | mRNA |
Studied pneumonia in mice | Fredrick Griffith |
Repeated Griffith's experiment | Oswald Avery |
As the mRNA is made, ______ is incorporated instead of thymine (T). | Uracil (U) |
The mRNA connects to the ________, and tRNA carries the amino acid methionine to the start codon. More tRNA carries the amino acid methionine to the start codon . More tRNA carries the ribosome according to the codons on the mRNA. | Ribosome |