Correct!!
The structure of a strand of DNA. - is the location where the parent cells is
ANSWER -it is a double helix, like a twisted separating and the complimentary nucleotide is
ladder. being added creating the two new strands
the ladder rings are nucleotide subunits and they
have a covalent bond to the sugar phosphate
backbone (made of deoxyribose and a How does DNA determine specific traits
phosphate group) (phenotypes)? - ANSWER -Phenotypes
arise from the actions of a wide variety of
proteins. To get these proteins this is what
What are the nucleotide subunits? - happens. DNA transfers genetic information
ANSWER -adenine, guanine, cytosine, and through transcription to RNA. Then through
thymine translation genetic info is transferred from RNA
into a polypeptide (protein strand)
How are the subunits held together? -
ANSWER -through a hydrogen bond What is the structure of RNA? - ANSWER -
It is a single-stranded nucleic acid.
it is the same as DNA except it uses ribose
What are the nucleotide subunits compliments? - instead of deoxyribose in the sugar phosphate
ANSWER -Adenine and thymine backbone and it uses uracil instead of thymine
cytosine and guanine
tRNA - ANSWER -transfer RNA: translation
How does DNA replicate? - ANSWER -the of the genetic message carried in the mRNA into
parent strand breaks off into two and then the amino acid language of proteins (converts the
enzymes (DNA polymerases) attach the three-letter words, codons, of nucleic acids to the
complimentary nucleotide to each side, creating amino acid words of proteins)
two separate daughter strands
What is the function of mRNA? -
What is the location site of where DNA ANSWER -Messenger molecules carry the
replication begins on the double helix called? - coding sequences for protein synthesis and are
ANSWER -the origins of replication called transcripts.
What is created when replication proceeds in rRNA - ANSWER -ribsosomal RNA
both directions? - ANSWER -replication makes up ribosomes which are the organelles in
bubbles, they are created because at the origin the cytoplasm that coordinate the functioning of
the replication process proceeds in other mRNA and tRNA and actually make polypeptides
directions, creating a bubble.
What two processes do genes code for specific
What is the replication forks? - ANSWER -It proteins? - ANSWER -transcription and
translation
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, BSC 108 Exam 3 Kennedy Questions and Answers 100%
Correct!!
What is a genetically modified organism? -
What is transcription and where does it take ANSWER -It is an organism that has
place? - ANSWER -Transcription is the acquired one or more genes by artificial means.
synthesis of mRNA under the direction of DNA,
nucleus
What is a transgenic organism? -
ANSWER -it is an organism that contains
What is translation and where does it take place? genes from another organism, typically of another
- ANSWER -It is the synthesis of a species.
polypeptide (later becomes a protein) under the
direction of mRNA
occurs on ribosomes in the cytoplasm What is a restriction enzyme? - ANSWER -
A bacterial enzyme that cuts up foreign DNA at
one very specific nucleotide sequence. ysed in
What is the structure of tRNA? - DNA technology to cut DNA molecules in
ANSWER -It is made of a single strand of reproducible ways.
RNA. consisting of about 80 nucleotides. Chain
twists and folds upon itself, forming several
double-stranded regions in which short stretches What is a PCR (polymerase chain reaction)? -
of RNA base-pair with other stretches. one end ANSWER -a technique used to obtain many
has a special triplet of bases called anticodons. it copies of a DNA molecule or many copies of part
is complementary to a codon triplet on mRNA. on of a DNA molecule. A small amount of DNA
the other side there is an amino acid attachment mixed with the enzyme DNA polymerase, DNA
site. nucleotides, and a few other ingredients
replicates repeatedly in a test tube.
What is a mutation? - ANSWER -It is a
change in the genetic material (the nucleotide What is therapeutic cloning? - ANSWER -
sequence) of a cell's DNA. the cloning of human cells by nuclear
transplantation for therapeutic purposes, such as
the replacement of body cells that have been
What is a point mutation? - ANSWER -It is irreversibly damaged by disease or injury.
a change in once base pair of a gene.
What is a frameshift mutation and what are the
What is a plasmid? - ANSWER -A small potential effects? - ANSWER -It is a genetic
ring of self-replicating DNA separate from the mutation caused by a deletion or insertion in a
larger chromosomes. Plasmids are most DNA sequence that shifts the way the sequence
frequently derived from bacteria. they can carry is read. tay-sachs
any gene and are passed from generation to
generation. making them perfect for genetic
cloning. what can a point mutation change? -
ANSWER -A gene's protein product.
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