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TLS Online TPP Program

#Question id: 346

The partial negative charge in a molecule of water occurs because ________.

#XL - Q Biochemistry

  1. the oxygen atom donates an electron to each of the hydrogen atoms

  2. the electrons shared between the oxygen and hydrogen atoms spend more time around the oxygen atom nucleus than around the hydrogen atom nucleus

  3. the oxygen atom has two pairs of electrons in its valence shell that are not neutralized by hydrogen atoms

  4. one of the hydrogen atoms donates an electron to the oxygen atom

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TLS Online TPP Program

#Question id: 3753

#XL - Q Biochemistry

Cytosine makes up 42% of the nucleotides in a sample of DNA from an organism. Approximately what percentage of the nucleotides in this sample will be thymine?
TLS Online TPP Program

#Question id: 19760

#XL - P Chemistry

Which of the following compound possesses covalent bond ?
TLS Online TPP Program

#Question id: 20132

#XL - P Chemistry

For which of the following processes will energy be absorbed –
TLS Online TPP Program

#Question id: 11278

#XL - R Botany

Which of the following is true with respect to oligotrophic lakes and eutrophic lakes?

A) Oligotrophic lakes are less subject to oxygen depletion.

B) Rates of photosynthesis are lower in eutrophic lakes.

C) Eutrophic lake water contains higher concentrations of nutrients.

D)Sediments in oligotrophic lakes contain larger amounts of decomposable organic matter.
TLS Online TPP Program

#Question id: 18230

#XL - S Microbiology

Although PCR and replication show resemblances, but the basic difference is