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41 Cards in this Set

  • Front
  • Back
Griffith's expirements advanced the study of genetics by proving that

genetic information can be passed from parents to their offspring during sexual reproduction
what do bacteriophages infect

viruses

Why did Hershey and Chase label the viral DNA with radioactive phosphorous and not radioactive sulfur

Proteins contain phosphorous and no sulfur
What part of the bacteriophage in Fig 12-1 contains genetic material?

B

What stores information in a cell?

DNA

What happens when a piece of DNA ismissing?

Genetic information is lost

In what way is DNA like a book?

DNA has stored info that can be copied and passed on

Figure 12-2 shows the structure of a
DNA molecule
Which of the following is a nucleotide found in DNA?

deoxyribose+phophate group+cytosine

Because of base pairing in DNA, the percentage of

thymine molecules in DNA is about equal to the percentage of adenine molecules

The table in FIgure 12-3 shows the results of measuring the percentages of the four bases of DNA of several different organisms. Some of the values are missing from the table. Based on Chagraff's rule, %s of guanine bases in chicken DNA should be around

21.5%

Based on Chagraff's rule, the % of cytosine in DNA of bacterium S Lutea should be around

29.4%

Rosalind Franklin contributed to the understanding of DNA by

producing the images of DNA molecules using XRay

WATF statements correctly describes Chagraff's contribution to the study of DNA?

Chargraff showed that adenine and thymine were found in equal percents in DNA

Which scientist(s) figured out the shape of DNA?

Hershey and Chase

Which of the following forms a base pair with Thymine

Adenine
DNA replications results in two DNA molecules

each with a new strand and one original strand

During DNA replication, a DNA strand that has the bases CTAGGT produces a strand with the bases
GATCCA

in figure 12-5 what nucleotide is going to be added at point 1 opposite thymine?

adenine

in 12-5 what is adding base pairs to the strand?

DNA polymerase

In both prokaryotes and eukaryotes, DNA replication happens

before cell division

RNA contains the sugar

Ribose
Unlike DNA, RNA contains

uracil

Which of the following are found in both DNA and RNA

deoxyribose, phosphate groups, and guanine

Which nucleotide in 13-1 indicates the nucleic acid above is RNA?

uracil

Which of the following is true

RNA is single stranded

Which type of RNA brings the info in the genetic code from the nucleus to other parts of the cell?

mRNA

WOTF is true of transcription?


Which molecules are involves in protein synthesis?

messenger RNA, ribosomal RNA and transfer RNA

During Eukaryotic transcription, an RNA molecule is formed that is

complementary to part of one strand of DNA

What does figure 13-2 show?

the genetic code?

How many nucleotides are needed to specify three amino acids?

9

There are 64 codons and 20 amino acids. WOTF is true?

several different codons can specify the same amino acid

In fig 13-3, which amino acid is specified by the mRNA code CCC?

Pro
in Fig 13-3 which code specifies the same amino acid as UAU?

UAC

What happens during translation?

the cell uses a messenger RNA code to make protiens

During translation, the type of amino acid that is added to the growing polypeptide depends on the

codon on the mRNA and the anticodon on the tRNA

Genes contain instructions for assembling

proteins

Which is the correct sequence of the transfer of information in most organisms?

DNA to RNA to protein

In eukaryotes

transcription takes place in the nucleus and translation takes place in the cytoplasm

When a chromosome undergoes a deletion mutation, information is

lost