During cellular reactions, electrons may be removed from compounds such as glucose and picked up by a coenzyme known as NAD+. When NAD+ gains these electrons, it is said to be
A. oxidized.
B. synthesized.
C. reduced.
D. dehydrated.
Answer: C
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The ________ is a dense network of microfilaments just beneath the plasma membrane
Fill in the blank with correct word.
A virus with an icosahedral shape that has a surrounding lipid bilayer that facilitates infection is known as _____ virus.
a. a prolate b. a complex c. an icosahedral d. a helical e. an enveloped
Which of the following statements is false regarding the consequences of horizontal gene transfer?
A. Microbes can expand their ecological niche when horizontal gene transfer bestows beneficial traits such as antibiotic resistance. B. Horizontal gene transfer is the main mechanism that drives the evolution of microorganisms. C. Horizontal gene transfer allows microbes to better survive environmental stresses such as UV radiation by replacing their own damaged DNA with intact DNA from another organism. D. Horizontal gene transfer allows the donor DNA to self replicate, simultaneously repressing reproduction in the recipient. E. Genetic changes resulting from horizontal gene transfer affects the virulence of bacteria when pathogenicity islands are transferred between organisms.
The formation of new species is termed _______
a. speciation b. spatial emergence c. spontaneous d. biogeographic