Which pair is NOT matched correctly?
a. plant cell wall : cellulose
b. intermediate filaments : tubulin
c. microfilaments : actin
d. cell membrane : phospholipid bilayer
Answer: b. intermediate filaments : tubulin
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In Engelmann's 1882 experiment, why did bacteria cluster in red or blue wavelengths of light?
a. The bacteria used those wavelengths to photosynthesize. b. Algae photosynthesized best at those wavelengths, producing needed oxygen. c. The bacteria produced oxygen most efficiently using red and blue light. d. Algae photosynthesized best at those wavelengths, producing needed carbon dioxide. e. The bacteria were attracted to bright light.
Which statement is true about the effect of stress on a population?
a. Plants compete more in an ideal environment. b. Plants compete more in a stressful environment. c. Only abiotic factors influence populations. d. Stressful environments brought about by man do not effect populations. e. Stressful environments brought about by nature do not effect populations.
The meiofauna of a sandy beach are organisms living on the surface of sediments
Indicate whether the statement is true or false
The cells wall of bacteria Z contains high concentrations of phospholipids along with proteins and relatively low amounts of lipopolysaccharide. When bacteria Z is gram stained, it will most like be colored?
A. Pink B. Purple C. Blue D. Clear, it does not retain any stain