Biology, 31.08.2021 20:00 deepspy599otchpd
Although compartmentalization allows cells to perform a variety of functions, there can be energetic costs to compartmentalization. In particular, cells expend energy to move certain molecules across membranes. In the mitochondria, the transmembrane gradient established by the electron transport chain plays an important role in the movement of molecules across the mitochondrial inner membrane. Which of the following processes involve directly expending this gradient to move molecules into the matrix?
(select two answers)
a. import of proteins into the mitochondrial matrix coupled to ATP hydrolysis
b. antiport of malate into the matrix and a -ketoglutarate out of the matrix
c. antiport of glutamate into the matrix and aspartate out of the matrix
d. symport of inorganic phosphate and hydrogen ions into the matrix
e. symport of pyruvate and hydrogen ions into the matrix
Answers: 1
Biology, 22.06.2019 05:10
1) what three conditions must be present for minerals to form through natural processes? 2) why are minerals considered inorganic substances? 3) how do oxides differ from other minerals that contain oxygen atoms? 4) how is a sulfide different from a sulfate? what makes native elements unique?
Answers: 2
Biology, 22.06.2019 14:00
Some substances but not other can cross the (blank) membrane of a cell
Answers: 2
Biology, 22.06.2019 22:30
Baroreceptors in the aortic arch and carotid bodies are mechanoreceptors that respond to the stretch that occurs in these arterial walls with changes in blood pressure. if pressure changes rapidly, the baroreceptors initiate a feedback mechanism that reduces blood pressure; however, if pressure changes slowly, as in developing hypertension, the receptors do not respond. given this information, the baroreceptors are most likely which type of receptor?
Answers: 3
Biology, 22.06.2019 23:30
S, tall stems (t) is a dominant trait while short stems (t) is a recessive trait. in a field of 1000 sunflowers, 820 are tall plants and 180 are short. which statement best describes the genotype of the sunflowers in the field?
Answers: 1
Although compartmentalization allows cells to perform a variety of functions, there can be energetic...
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