bio 101 exam 4
existing DNA serves as a template 4 deoxiribonucleotide triphosphates must be present enzymes source of chemical energy
4 requirements to replicate DNA
the two resulting DNA molecules each have one new DNA strand and one old strand from the original DNA molecule
DNA replication is called semiconservative because
5'AATGCCTG3'
DNA template strand reads 3' TTACGGAC5'. during DNA replication what specific complementary DNA sequence will be added to the growing new strand?
the lagging strand
During DNA replication the DNA strand that is synthesized as short Okazaki fragment is called the
5' cap and poly (A) tail
During RNA processing, which of the following are added to helps to stabilize mRNA by inhibiting its degradation?
translation
Which of the following processes does not occur within the nucleus?
protein
a functional biological molecule consisting of one or more polypeptide chains into a specific 3-d structure
community
a group of different species, living in the same local area interacting with one another
population
a group of individuals of the same species that live in the same local area an can interbreed to produce fertile offspring is a
snakes, owls, corn
a group of mice live in a corn field which of the following list of biotic factors can impact the population
the bottle neck effect
a large population of field mice is decimated by the flooding of their habitat. over 90% of the mice die in the flood. now, only a few mice are left. by chance, only brown furred mice survived and all of the black and white furred mice perished in the flood. what is this an example of?
Transcription
a mRNA complementary to the DNA is produced
DNA polymerase can only add nucleotides to the free 3' end
a new DNA strand elongates only in the 5' to 3' direction
3' UGC 5'
a particular triplet of bases in the template strand of DNA is 5' ACG 3'. the corresponding codon for the mRNA transcribed is
missense
a point mutation occurs, changing the DNA template strand from 3' CTG5' what type of mutation is this
Polypeptide
a polymer chain of amino acids held together by peptide bond
10 individuals lost
a population of ground squirrels has an annual per capita birth rate .03 and a death rate of .04 calculate an estimate of the number of individuals added or lost from a population of 1,000 individuals in one year.
DNA polymerase
adds DNA nucleotides at the 3'
DNA polymerase
adds DNA nucleotides at the 3' end using a DNA template strand to pair complementary bases
transcription, nucleus
an RNA copy of the DNA template strand is made. this describes this process of them______ which takes place in the ______.
the growth rate will approach zero
as N approaches K for a certain population, which of the following is predicted by the logistic equation
bound chromosome
attached to the ER ribosomes are identical and can switch from free to bound
the maximum population size that a particular environment can support
carrying capacity is
jean-baptist de lamarck
characteristics that an organisms acquires during their lifetime are NOT normally inherited by offspring. which of the following scientists came up with the idea of "inheritance of acquired characteristics"?
polypeptide
complete the sentence with the MOST correct answer. one gene codes for one_________
leading strand
copied continuously in the direction of the replication
primase
creates a RNA primer
18
cytosine makes up to 32% of the nucleotides in a sample of DNA from an organisms. approximately what percentage of the nucleotides in this sample will be thymine
GLY-THR-THR-THR
for the following mRNA strand, indicate the correct polypeptide sequence that will be produced: 3' GCAUCAGCAAGG5'
aminoacyl-tRNA synthetase
how do aminos get matched
dispersion
how it is dispersed through out that area
density
how many you have in an area
It binds to the stop codon in the A site in place of a tRNA.
in translation, what is the function of the release factor
exponential growth
j curve
single strand binding proteins
keep strands stable
biotic
living factors
free ribosomes
mostly synthesized proteins that function in the cytosol
individuals adapt to their environments and there by evolve.
natural selection is based on all of the following except
abiotic
non living factors
intron
non protein coding region
topoisomerase
prevents supercoiling
exon
protein coding region
ligase
repairs any breaks in the sugar-phosphate backbone; joins okazaki fragments
logistic growth
s curve
the replicated DNA has one strand from the parent and one from the new complementary strand
semiconservative replication
exponential growth
the J shaped growth curve indicates
adenine, thymine, guanine, cytosine
the four nitrogenous bases
translation
the mRNA is "read" and a polypeptide chain is produced
lagging strand
the other parent template strand cannot be continuously copied
A site- binding site P site- where the polypeptide chain resides E site- exit site
the three sites of ribosomes
transfer
the type of RNA that brings the correct amino acid to the ribosome so it can be added to the growing polypeptide chain ________ RNA
initiation
transcription factors bind to a promoter region tata box
helicase
unwinds helix
helicase
unwinds the DNA double helix
Deoxyribose, phosphate group, nitrogenous base
what are the 3 parts of the nucleotide
A pairs with T, C and G
what bases pair together
the nucleotide sequence of the template strand
what determines the nucleotide sequence of the newly synthesized strand during DNA replication?
pyrimidines always bind to purines
what effect will the mutation described in question #19 have on the polypeptide strand that is synthesized from it
all of the dna in an organism
what is a genome
nuclease, DNA polymerase, DNA ligase
what is included in nucleotide excision repair
hydrogen
what kind of chemical bond is found between paired bases of the DNA double helix?
when a stop codon is reached
when does rna processing stop
the nucleous
where are ribosomes assembled
silent mutation
which one of the following point mutations is most likely to have no effect on the final protein product
eukaryote
which type of cell goes through RNA processing (eukaryote or prokaryote)
