Both fermentation and aerobic respiration begin with ________
a. electron transfer from NADH to pyruvate
b. the Krebs cycle
c. an electron transfer chain
d. glycolysis
d
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Match the following items with the correct phrases.
_______1. Example of the immunity that results from the body's response to an invading microorganism. _______2. Example of the immunity that results from the body's response to a vaccine. _______3. Example of antibodies that a person receives in an injection of gamma globulin (immune serum globulin). _______4. Examples of maternal antibodies that a fetus receives across the placenta and maternal antibodies that an infant receives in colostrum. a. artificial active acquired immunity b. artificial passive acquired immunity c. natural active acquired immunity d. natural passive acquired immunity
Worldwide declines in the population size of frogs have recently been linked to ____
a. overharvesting b. a fungus
c. dams d. decreases in global temperatures e. increases in precipitation
What is the dominant photosynthetic pigment found in all types of algae?
a. Chlorophyll b b. Chlorophyll c c. Chlorophyll a d. Phycoerythrin e. Chlorophyll d
A marine aquarium has been hoping to breed some endangered species in its intertidal zone tank, but has been unsuccessful. Their new student intern, who is taking Introductory Biology at the local university, suggested raising the water level. It worked! Several species spawned and the aquarists are thrilled. What is the best explanation for the behavioral response?
A. The added water diluted pheromones that built up in the tank over time, signaling over-crowding. B. The added water mimicked the higher tide that occurs monthly, which many marine animals use to synchronize their reproduction. C. It worked, but for a poor reason -- the chlorine in the poorly-prepared water was harmful to the animals, and they engaged in "last chance" mating in case they might die. D. The added water led to proliferation of algae and plankton, signaling an abundance of food that could support small fry and larvae. 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 spawning behavior? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? 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?