Which of the following is the protist most
closely related to animals?
a. Placozoans
b. Choanogflagellates
c. Charophytes
d. Amoebas
e. Dinoflagellates
B
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Your biology professor takes the class on a field trip to a local lake. You spend an hour studying the lake and writing down all observations. You hypothesize that the lake is oligotrophic. Which observations would support this hypothesis? Check all that apply.
_____ The shoreline is mostly rock and sand with very little vegetative matter. _____ The lake has extensive aquatic plant beds. _____ The lake has little planktonic growth. _____ The bottom of the lake is easily visible. _____ An oxygen probe reveals low oxygen content in the water. 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 eutrophic vs. oligotrophic lakes? Choose Answer · Given what you now know, what information and/or problem solving approach 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?
Which of the following is in the correct order for one cycle of polymerase chain reaction (PCR)?
A) Denature DNA; add fresh enzyme; anneal primers; add dNTPs; extend primers. B) Add fresh enzyme; denature DNA; anneal primers; add dNTPs; extend primers. C) Anneal primers; denature DNA; extend primers. D) Extend primers; anneal primers; denature DNA. E) Denature DNA; anneal primers; extend primers.
In eukaryotes, photosynthesis takes place inside the ________.
A. chloroplasts B. mitochondria C. cytoplasm D. Golgi apparatus
The use of ________ to treat drinking water, which began in 1913, reduces the incidence of waterborne diseases
A) coagulation B) chlorination C) filtration D) UV irradiation