Which of the following is the most direct source of energy for cotransport?
-the movement of one of the transported substances up its concentration gradient
-the movement of one of the transported substances down its concentration gradient
-ATP hydrolysis
-ATP formation
cotransport requires no energy
the movement of one of the transported substances down its concentration gradient
You might also like to view...
Which of the following statements most accurately describes the inference that can be made regarding the possible functional significance of FoxP2 in the evolution of human language?
A. FoxP2 is a highly conserved transcription fact that is a "language gene". Changes in the function of this gene in the human lineage were the key event that allowed language to evolve. B. FoxP2 is a developmental gene with pleiotropic effects. Because this gene is highly conserved among a group organisms that are capable of acoustic communication it must be involved in the evolution of human language. C. FoxP2 is a highly conserved transcription factor. Because songbirds whose FoxP2 has been knocked out are less capable of learning new songs, this gene is likely involved in the evolution of human language. D. FoxP2 is a developmental gene that affects acoustic communication in a range of animal species. Because the human gene shows an elevated rate of non-synonymous to synonymous mutations in the human lineage, changes to the function of this gene in the humans may have contributed to the evolution of language.
Terminal electron acceptors used by Desulfotomaculum include sulfate and sulfite, converted to hydrogen sulfide.
Answer the following statement true (T) or false (F)
Within an erythrocyte, the conversion of CO2 to bicarbonate is prevented from reaching equilibrium by the
A) temperature of the body. B) absence of a nucleus. C) presence of oxygen. D) efflux of bicarbonate from the erythrocyte via the chloride shift. E) presence of hydrogen ions.
What is the relationship between neurons and nerves?
A) Nerves are comprised of neurons. B) Nerves are the extensions of a neuron that transmit signals. C) Nerves transmit signals in the peripheral nervous system, and neurons transmit signals in the central nervous system. D) Nerves develop into neurons. E) Neurons transmit signals over shorter distances than nerves do and exist exclusively in the brain.