An early consequence of the release of oxygen gas by plant and bacterial photosynthesis was to _____
A) change the atmosphere from oxidizing to reducing
B) make it easier to maintain reduced molecules
C) cause iron in ocean water and terrestrial rocks to rust (oxidize)
D) prevent the formation of an ozone layer
C
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Our agricultural practices lead to an expansion of the genetic diversity of crop plants
A. true B. false
All of the following statements regarding proteins are true EXCEPT
A) they are the primary components of muscle, connective tissue, nails, and hair. B) humans can synthesize all of the amino acids needed to make proteins. C) most enzymes are proteins. D) kwashiorkor is caused by protein deficiency. E) some act as receptors on cell membranes.
Sharks have a number of fleshy gill slits instead of a bony gill cover. How does this affect their behavior?
A. They live only in highly oxygenated water. B. Their movements are slow due to low oxygen. C. They do not maintain neutral buoyancy. D. They keep swimming to move water across their gills.
Which type of ELISA will you be utilizing in this lab?
A) Indirect ELISA B) Direct ELISA C) Both