ch12 quest
Terms
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copy deck
- unlike dna rna contains...
- uracil
- why is it possible for an amino acid to be specified by more than one kind of codon?
- there are 63 different kinds od codons but only 20 amino acids
- a promotor is...
- the binding site for rna polymerase
- genes contain instructions for assembling...
- proteins
- what type of rna functions as a blueprint of the genetic code?
- mRNA
- a missense mutation is...
- a type of point mutation that changes the amino acid sequence
- rna contains the sugar...
- ribose
- what is produced during transcription?
- rna molecules
-
which of the following terms is least closely related to the others?
- polypeptide
- trna
- anti codon
- intron - intron
- a mutation that involves a single nucleotide is called a...
- point mutation
-
which of the following is found in both dna and rna?
- ribose, phosphate groups, adenine
- phosphate groups, guanine and thymine
- deoxyribose, phosphate groups, guanine
- phosphate groups, gaunine and cytosine - phosphate groups, guanine and cytosine
- elongation refers to the growth of the ______ during translation?
- polypeptide chain
- if a nucleic acid conatins uracil, it is...
- rna
- t/f a codon consists of 3 nucleotides?
- true
- t/f AUG is the sequence in the promotor region to which rna polymerase binds...
- f...TATATA
- the order of nitrogenous bases in dna determines the order of __________ in proteins
- amino acids
- suppose that part of an amino acid sequence of a protein changed from tyrosine-proline-glycine-alanine to tyrosine-histidine-glycine-alanine. this change was most likely caused by a point mutation called a...
- missense mutation
- the ______ of a trna molecule determines the type of amino acid that bonds with the trna
- anti codon
- ________ (type of rna) is used to assemble ribosomes in the ______ (location) of the cell
- rRNA; nucleolus
- the new strand of nucleotides created from DNA replication is often called...
- the daughter strand
- what is the function of the enzyme DNA ligase?
- join the okazaki fragments
- during DNA replication a DNA strand that has the bases CTAGGT produces a strand with the bases...
- GATCCA
- the sugar phosphate back bone is created by...
- the phosphate group of one nucleotide attaching to the sugar of another nucleotide
- the agarose gel in the electrophoreses process acts as...
- a matrix (or series of webs) to separate molecules based on size
- DNA in prokaryotes is...
- circular and called a plasmid
-
which step of dna replicatin listed below comes first?
- add a segment of mucleic acids (called a primer) to the parent strand of dna
- unzip the 2 parent dna stands
- synthesize a new daughter strand of DNA
- join the okazaki fragmen - unzip the 2 parents strands of dna
-
avery experiments showed that bacteria are transformed by...
- carbs
- lipids
- proteins
- none - none
- the ermn used to describe one starnd of nucleotides running opposite of the other starnd of nucleotides in the double helix is...
- antiparallel
- dna is copied durinf a process called...
- replication
- in argarose gel electrophoresis, dna...
- moves towards the positive end of the gel
- in eukaryotes, dna
- is located in the nucleus
- dna replication results in 2 dna molecules...
- each with one new starnd and one priginal strand
- what is the function of the enzynme helicase?
- unzip the 2 parent dna strands
- humans have ____ chromosomes
- 46
-
which of the following include all the others?
- dna molecules, -histones
-chromosomes
- nucleosomesq - -chromosomes
- the term deoxyribose refers to...
- a 5 carbon sugar
- dna is wrapped tightly around_____
- histones
- the replication of a dna double helix results in ____ new molecules of dna
- two
- the nitrogenous bases in dna are connected by _____
- hydrogen bonds
- the part of the nucleotide that givies it its identity is the _____
- nitrogenous base
- the watson and crick molecule of dna is a ____
- double helix
- in eukaryotes, dna is found in the ___of the cell
- nucleus
- agarose gel electrophoresis separates molecules based on ___ and ___
- size and charge
- adenine and guanine fall under the nitrogenous base type called _____
- purines
- dna stands for...
- deoxyribose nucleic acid