Biologi 1h 2 semester final

Before DNA could definitively be shown to be the genetic material in cells, scientists had to show that DNA could

Carry and make copies of information

Tolerate high temperatures

Bemodified in reponse to environmental conditions

Be broken down into small subunits

A nucleotide does NOT contain

A nitrogenous base

A sugar

An amino Acid

A phosphate group

According to Chargaff's rule of base-pairing, which of the following is true about DNA?

A=T and C=G

A=c and T=G

A=G and T=C

A=T=G=C

The bonds that hold the two strands of DNA together come from

The attraction of phosphate groups for one another

Strong bonds between Nitrogenous bases and sugar-phosphate backbone

Weak hydrogen bonds between nitrogenous bases

Carbon-to-carbon bonds in the sugar portion of the nucleotides

The main enzyme involved in the replication of the DNA molecule is

RNA polymerase

DNA polymerase

Ribose

Carbohydrase

During DNA replication, Which sequence of nucleotides would bond with the DNA sequence TATGA?

TATGA

ATACT

CACTA

AGTAT

Which of the following does NOT describe the structure of DNA?

Double Helix

Nucleotide polymer

Contains Adenine-Guanine pairs

Sugar-phosphate backbone

The process by which the genetic code of DNA is copied into a strand of RNA is called

Translation

Transcription

Transformation

Replication

Which of the following describes RNA?

RNA is usually double stranded and contains thymine

RNA is usually single stranded and contains Uracil

RNA is longer than DNA and uses 5 bases to encode information

RNA is made in the nucleus of eukaryotes and stays there to carry out it's functions

In messenger RNA each codon specifies a particular

Nucleotide

Enzyme

Amino Acid

Promoter

In messenger RNA each codon specifies a particular

Nucleotide

Enzyme

Amino Acid

Promoter

The process of making proteins on the ribosome based on the instructions in messenger RNA, is called

Transcription

Translation

Transformation

Transmutation

The DNA sequence GCTATA would be transcribed to __________ on messenger RNA

GCUAUA

CGATAT

GCAUAU

GCUTUT

If a sample of DNA contains 19% thymine, approximately how much Guanine would the sample contain

19%

25%

29%

45%

How many codons are needed to specify 3 amino acids?

DNA replication results in two DNA molecules,

Each with two new strands

One with 2 new strands, one with 2 original strands

Each with one new strand and one original strand

Each with two original strands

RNA contains the sugar

Deoxyribose

Sucrose

Glucose

Ribose

What happens during the process of translation?

Messenger RNA is made from DNA

The cell uses info from messenger RNA to produce proteins

Transfer RNA (tRNA) is made from messenger RNA

Copies of DNA molecules are made

In the DNA extraction lab, the detergent solution was used to

Wash your hands after the experiment

Break down the membranes

Make the DNA dissolve in water

Be an independant variable

Rosalind Franklin

Discovered and named the double-helix of DNA

Discovered the relationship between A,T,C, and G

Produce x rays of the helix structures

Introduced james watson to Francis Crick

The Codon, AUG (coding for methionine) is always the

STOP codon

Base anticodon

Codon for alanine

START codon

Biologi 1h 2 semester final

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