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TLS Online TPP Program

#Question id: 2208

Which of the following statements is a reasonable explanation for why unsaturated fatty acids help keep a membrane more fluid at lower temperatures?

#XL - Q Biochemistry

  1. The double bonds form kinks in the fatty acid tails, preventing adjacent lipids from packing tightly.

  2. Unsaturated fatty acids have a higher cholesterol content, which prevents adjacent lipids from packing tightly.

  3. Unsaturated fatty acids are more nonpolar than saturated fatty acids.

  4. The double bonds block interaction among the hydrophilic head groups of the lipids.

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TLS Online TPP Program

#Question id: 2379

#XL - Q Biochemistry

Chloroplasts and mitochondria are good examples of the Endosymbiont Theory because
TLS Online TPP Program

#Question id: 20228

#XL - P Chemistry

NH3 has a higher boiling point than expected because
TLS Online TPP Program

#Question id: 11919

#XL - T Zoology

Frequent disturbances could lead to failure of a community to reach a climax community as one seral stage keeps replacing itself, a condition known as
TLS Online TPP Program

#Question id: 4947

#XL - S Microbiology

The first genes on Earth were probably
TLS Online TPP Program

#Question id: 3646

#XL - S Microbiology

Both leading and lagging strand primers are elongated by: