) ________ is a mechanism of lowering the activation energy barrier in some reactions, as with the detoxification of hydrogen peroxide.
Fill in the blank(s) with the appropriate word(s).
Quantum tunneling
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Using the sudden bloom of cyanobacteria in a lake due to anthropogenic fertilizer inputs as an example, explain the coupling of carbon, nitrogen, and oxygen cycling. Exclude discussion of all organisms other than microorganisms
What will be an ideal response?
Which of the following have moist, permeable skin that performs cutaneous respiration?
a. Actinopterygii b. Urodela c. Amniotes d. Squamata
During DNA replication, the leading strand is synthesized continuously, whereas the lagging strand is synthesized as Okazaki fragments. Why is this so?
A. There are thousands of origins of replication on the lagging strand, but only one on the leading strand B. DNA polymerase can only bind on one strand at a time C. DNA synthesis can only take place in the 5' to 3' direction D. DNA strands are baked in the oven for 40 minutes at 200 degrees Celsius
Which species is considered to be the most ancient?
A. Homo erectus B. Australopithecus afarensis C. Australopithecus sediba D. Homo sapiens E. Sahelanthropus tchadensis