Quiz#5 (exam 2)

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The sugar in RNA nucleotides is____

Ribose

DNA vaccines____.

Show promises in animal studies and now in clinical trials

Nucleosome's are bead-like structures_____.

Composed of histone wrapped with DNA

After contracting SARS, about _____ % of the infected died.

10%

The chemical formula for glucose, C6H12O6, represents ___ atoms and ___ molecules

24;1

If one strand of DNA has the sequence 5'CCGTAGCA'3 The complementary strand would be written as ____

3' GGCATCGT '5

Maurice Walkins and Rosalind Franklin obtained x-ray diffraction photographs that indicated that DNA has a_____ shape with a constant diameter

Helix

In the Watson - creek model of DNA sequence, the polynucleotide chains____.

Are oriented in opposite directions

Once the strands of DNA are separated, the enzyme DNA Polymerase ____ and links nucleotides together.

Reads the nucleotide sequence of the template strand

In the early 1950s, James Watson and Francis crick____.

Began to work out the structure of DNA by organizing the information about DNA that was already available

Each chromosome contains a constricted region called a(n) _____ where sister chromatids attach

Centromere

A phosphate group is a compound containing phosphorus _____.

Chemically bonded to 4 oxygen molecules

One double stranded DNA molecule combined with proteins form ____ which is visible as clumps or threads in the cell nucleus

Chromatin

Telomerase is an enzyme that adds telomere repeats to the ends of ____

Chromosomes

DNA polymerase catalyzes the synthesis of_____

DNA

In June 2013, the US Supreme Court ruled that if a gene is removed from the human body and purified it can be patented. True or false?

Falls

Because RNA is a single-stranded, it does not participate in the regulations of gene expression. True or false?

False

DNA contains two identical poly nucleotide chains. True or false?

False

In the early 20th century most scientist believe that only nucleic acid's were complex enough to carry genetic information. True or false?

False

SARS symptoms include ____

High fever, headache, and respiratory problem

Proteins contain 20 different subunits ____

In the form of amino acids

Bacteriophages are viruses that _____.

Infect and copy themselves inside bacterial cells

Friedrich Miescher, after he began to study the chemical composition of the nucleus, was one of the first too____

Isolate and purify a cellular organelle

Telomere are short DNA sequences_____

Located at each end of a chromosome

Histones are the ____

Major class of proteins in chromatin

Purines and pyrimidines are two classes of organic bases found in

Nucleic acid's

A basic building block of DNA and RNA is a(n) ____

Nucleotide

A(n)____ is made up of sugar, a phosphate, and a nitrogenous base.

Nucleotide

The search for a ____ treatment led to the discovery that DNA carry genetic information

Pneumonia

Cytosine, uracil, and thymine are singular ringed nitrogen containing organic bases called___

Pyrimidines

A replicated DNA molecule contains one new strand and one old strand. True or false?

True

Rosalind Franklindid not share a part of the 1962 noble prize for medicine of psychology because she died four years earlier. True or false?

True

The interphase nucleus has an internal structure in which each chromosome occupies a distinct region called a chromosome territory. True or false?

True

The process of transferring genetic info between cells is accomplished with a transformation factor called DNA. True or false?

True

adenine and guanine are nitrogen containing bases found in nucleic acid's. True or false?

True

In RNA the base ____ takes the place of the base thymine

Uracil


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