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TLS Online TPP Program

#Question id: 3782

In his work with pneumonia-causing bacteria and mice, Griffith found that

#XL - Q Biochemistry

  1. the protein coat from pathogenic cells was able to transform nonpathogenic cells.

  2. heat-killed pathogenic cells caused pneumonia.

  3. some substance from pathogenic cells was transferred to nonpathogenic cells, making them pathogenic.

  4. the polysaccharide coat of bacteria caused pneumonia.

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TLS Online TPP Program

#Question id: 54

#XL - Q Biochemistry

About 25 of the 92 natural elements are known to be essential to life. Which 4 of these 25 elements make up approximately 96% of living matter?
TLS Online TPP Program

#Question id: 3464

#XL - T Zoology

Adult male humans generally have deeper voices than do adult female humans, which is the direct result of higher levels of testosterone causing growth of the larynx. If the fossil records ofapes and humans alike show a trend toward decreasing larynx size in adult females and increasing larynx size in adult males, then
TLS Online TPP Program

#Question id: 19631

#XL - P Chemistry

When NH4Cl is added to NH4OH solution the dissociation of ammonium hydroxide is reduced. It is due to:
TLS Online TPP Program

#Question id: 759

#XL - Q Biochemistry

The Watson and Crick structure of DNA refers to:
TLS Online TPP Program

#Question id: 19520

#XL - P Chemistry

The conductivity of electrolytic conductors is due to __________