Biology 211
Which of the following molecules functions to transfer information from one generation to the next in eukaryotes?
DNA
The molecules that make up a chromosome are __ and ___
DNA and Proteins
Which of the following is not required for transcription?
DNA polymerase
The enzymes that fnction to replicate DNA in the cell are
DNA polymerases
If mendel had preformed experiment on cattle rather than on peas, the patterns of inheritance would not have been easily detectable because cattle....
have small number of offspring
Which of the following is not found in DNA?
sulfur
The products of mitosis are....
two genetically identical nuclei
If adenine makes up 20 percent of the bases in a sample of double stranded DNA what percentage of the bases would be uracil?
0%
Diploid cells of the fruit fly have 10 chromosomes. How many chromosomes does a fruit fly gamete have?
5
If a strand of DNA has the sequence 5'-GTCTATGCATTA- 3' what would the sequence of the resulting transcribed RNA?
5'-UAAUGCAUAGAC-3'
In what order does a charged tRNA molecule move between the three sites on the ribosome?
A,P, E
The replication of lagging strands of DNA differs from the replication of leading strands in that...
All of the above
Which of the following changes affects more that a single amino acid in a sequence?
Frameshift mutation
Mature nerve cells which are incapable of cell division are most likely in
G1
Cyclin dependent kinases catalyze the phosphorylation of targeted proteins. Which of the following statements about this process is true?
It changes shape and function of the targeted protein.
In sickle cell disease one amino acid is substitutted for another. This type of mutation is reffered to as a ___ mutation.
Missense
Which of the following statements about the flow of genetic information is true?
None of the above
Which of the following pairs of phase and event does not match?
Prophase: duplication of chromosomes
In the process of protein synthesis which of the following must take place in order to ensure that the protein made is the one specified by mRNA?
Ribosomes must read the mRNA codons correctly & The tRNAs must deliver the correct amino acids for the mRNA codons. BOTH A & B
UGU and UGC both code for cysteine. A change from UGU to UGC would thus be a _____ mutation.
Silent
How does a nucleus in G2 differ from a nucleus in G1?
The G2 nucleus has twice the amount of DNA as the G1
A newly formed protein whose destination is the golgi apparatus will likely contain...
a signal sequence
Different formm of a gene are called
alleles
Double stranded DNA looks likea ladder that has been twisted into a helix or a spiral. The side supports of the ladder are.l..
alternating sugars and phosphate groups
A bacterial cell gives rise to two genetically identical daughter cells by a process known as...
binary fission
Mutations are
changes in the nucleotide sequence of DNA
The genotype of an organism that expreses a dominant trait can be determined by...
crossing the organism with a homozygous recessive organism
All zygotes are...
diploid
Which of the following molecular models describes the structure of the DNA molecule?
helical, antiparallel, double stranded
The nitrogenous bases (and the two strands of the DNA double helix) are held together by?
hydrogen bonds
During replication the new DNA strand is synthesized
in the 5'to3' direction
Which of the following molecules is most involved in the transfer of genetic information form the nucleus to the cytoplasm?
mRNA
During initiation of transcription the sequence of DNA to which RNA polymerase binds to it the...
promoter
Ribosomes are a collection of ____ that are needed for ___.
proteins and rRNAs; translation
Mendels crossing of spherical seeded pea plants with wrinkled seeded pea plants resulted in progeny that all had spherical seeds. This indicates that the wrinkle seed trait is...
recessive
Mendels dihybris crosses
resulted in four different pheonotypes, involved two different characters, led to the formation of the law on independent assortment, involved unlinked genes
Replication of DNA occurs during this phase of the cell cycle...
s phase
The strands that make up DNA are antiparallel. This means that...
the 5' to 3' direction of one strand is counter to the 5' to 3' direction of the other strand
The genetis make up of an organism is called...
the genotype
During DNA replication...
the template strands must seperate so that both can be copied
One of the major contributions of Mendel to the study of genetics was...
the use of a quantitative approach to analyze data.