Upon transmission of a nerve signal to a muscle cell, ________ is released from the sarcoplasmic reticulum through a gated channel.
Fill in the blank(s) with the appropriate word(s).
calcium
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How would a mutation allowing a heterocyte to synthesize more chlorophyll affect the process of nitrogen fixation?
A. There will be a decrease in the amount of ammonia converted to nitrogen gas. B. There will be a decrease in the amount of nitrogen gas converted to ammonia. C. There will be an increase in the amount of ammonia converted to nitrogen gas. D. There will be an increase in the amount of nitrogen gas converted to ammonia. E. There will be no effect because photosynthesis and nitrogen fixation are not directly related.
For every glucose molecule that goes through cellular respiration, how many carbon atoms are fully oxidized to CO2 in the citric acid cycle?
a. 1 b. 2 c. 3 d. 4 e. 5
When ATP is split into ADP and Pi,
a. the energy is released in the form of heat. b. the energy is directly transferred to the target molecule by an unknown mechanism. c. the binding of ADP or Pi to the target molecule allows the energy of ATP hydrolysis to be transferred to the target molecule. d. the two remaining phosphates acquire the energy that had been present in the linkage of three phosphates. e. the resulting delta G is positive.
Discuss the uncertainties and available evidence related to the evolutionary relationships among the
following algal protists: brown algae, golden algae, red algae, and green algae. Include in your discussion how they relate to the plants. What will be an ideal response?