Biology 211

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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.


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