Contrast fermentation and respiration in terms of electron donor, electron acceptor, type of ATP production, and relative number of ATP produced
What will be an ideal response?
Answer: Respiration should be distinguished as using separate electron donors and acceptors (such as organic carbon as the electron donor and oxygen as the electron acceptor), while fermentation splits organic molecules in order to oxidize one part of the molecule and reduce the other part in order to regenerate NAD+. Fermentation uses substrate level phosphorylation to generate relatively few ATP, while respiration uses oxidative phosphorylation to generate more ATP.
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Biological fitness is best defined as
A) A heritable trait that increases the match of an individual to its environment. B) Variability in the population for a trait that increases survival. C) Relative the ability of an individual to produce offspring that survive and reproduce. D) Competition among individuals for resources that allow them to have more offspring. E) Similar reproductive success among individuals in a population.
The most significant cells in graft rejection are
A. helper T cells. B. suppressor T cells. C. cytotoxic T cells. D. natural killer (NK) cells. E. delayed hypersensitivity T cells.
Collagen fibers are characteristic of which
tissue? a. muscle b. epithelial c. connective d. nervous e. glandular
Mature vessel elements:a
form sieve tubes in the vascular tissue. b. have pits in their walls, which allow water to be transported laterally. c. are alive and contain cytoplasm. d. are given support by companion cells. e. occur in pairs, forming stomata in the epidermis.