Arrange the following steps into the order that correctly represents the sequence for the evolution of cells:
1 . organic polymers
2 . DNA based cells
3 . inorganic molecules
4 . organic monomers
5 . protocells
a. 5, 3, 1, 2, 4
b. 1, 4, 3, 2, 5
c. 1, 4, 3, 5, 2
d. 3, 1, 4, 5, 2
e. 3, 4, 1, 5, 2
e
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The ATP generated from cellular respiration is not sufficient to drive the Calvin cycle in plants, even if appropriate levels of NADPH and CO2 are present. Why not?
A. Plants do not undergo cellular respiration B. Breaking down sugar to provide the energy needed to synthesize sugar would be a futile cycle C. The Calvin cycle requires more ATP than can possibly be made from cellular respiration D. Cellular respiration and photosynthesis do not happen in the same cells in plants Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about the Calvin cycle, photosynthesis, and cellular respiration in plants? What other information is related to the question? Choose Answer Do you have all the information need to determine why ATP from cellular respiration needs to be supplemented with ATP from the light reactions? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
In algae, gametangia are generally unicellular
_________________ Indicate whether the statement is true or false.
__________ is a signal that generates a response without any processing in the brain.
a. Reflex arc b. Synapse c. Sensory neuron d. Central nervous system e. Peripheral nervous system
Atoms of a single element that possess different numbers of neutrons are called
A. ions. B. polymers. C. isotopes. D. monomers. E. isomers.