At which level of protein structure are peptide bonds most important?
a. primary
b. secondary
c. tertiary
d. quaternary
e. globular
a
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Which of the following groups is suspected of causing climate change?
A. fossil fuel and hydropower usage B. erosion, deforestation, pollution, and desertification C. overfishing and hydropower usage D. ocean acidification and desertification E. fossil fuel usage, deforestation, and agriculture
Which of the following taxa includes the largest amount of genetic diversity among plantlike organisms?
A) Embryophyta B) Viridiplantae C) Plantae D) Charophyceae E) Tracheophyta
Cacti in the deserts of southwestern North America and some euphorbs of the deserts of Africa, have barrel-shaped stems, short-lived leaves, and spines, yet these two types of plants are from different evolutionary lineages. This is an example of
A. selective breeding. B. convergent evolution. C. homologous traits. D. transitional forms.
Which of the following is considered to be a differential staining procedure?
A. Both Gram stain and Acid-fast stain B. Gram stain C. Acid-fast stain D. Leifson's flagella stain