Phagocytosis (Phagotrophy) is:
A. attack of cells by bacteriophages
B. the phases through which cells pass during division
C. the disintegration of a cell
D. the attachment of protist cells to a substrate
E. the capture of food particles by a cell
E. the capture of food particles by a cell
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Discuss energy in reference to Case 1, The First Cell: Life's Origins. The conversion of H2S to sulfuric acid is used as a source of energy by some extremophiles
As described in Case 1, some extremophiles can use hydrogen sulfide gas (H2S) as a source of energy. What can you conclude about the G of the reaction and the relative potential energies of the reactant and product? What will be an ideal response?
Which of the following statements is NOT true about sister chromatids?
A. They are identical DNA sequences. B. They are attached to each other at a region of their DNA sequence called the centromere. C. They are formed in the S phase of the cell cycle when the chromosome undergoes replication. D. They are formed when the prokaryotic circular chromosome attaches at the plasma membrane. E. All of these statements about sister chromatids are false.
An array of organisms together with their physical environment is referred to as a(n) ____
a. population b. community c. ecosystem d. biosphere e. landscape
Damage to the tendons that pass over the wrist causes
a. Ehlers-Danlos syndrome. b. tarsal tunnel syndrome. c. Pierre-Robin syndrome. d. carpal tunnel syndrome. e. Wolf-Parkinson-White syndrome.