If the human malaria parasite Plasmodium falciparum were the product of co-speciation, its closest relative would be found in:

A. mosquitoes.
B. gorillas.
C. chimpanzees.
D. orangutans.
E. pocket gophers.


C

Biology & Microbiology

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For microbial biodiversity studies, it is common to identify the ________ rather than the ________ as a measure of biodiversity

A) organisms themselves / genes B) genes / organisms themselves C) cell types / genes D) cell types / organisms themselves

Biology & Microbiology

Organisms that are characterized by being unicellular, photosynthetic, and having double shells made of silica are known as 

A. dinoflagellates. B. diatoms. C. kelps. D. euglenoids. E. foraminifera.

Biology & Microbiology

Timber wolf populations are partially controlled by wolf behavior. For example, wolves form packs and are territorial. Therefore, only a finite number of wolves will comprise a pack and occupy a relatively large territory. Which of the following best describes this type of population-regulating mechanism?

a. competitive exclusion mechanism b. niche-controlling mechanism c. habitat-controlling mechanism d. extrinsic mechanism e. intrinsic mechanism

Biology & Microbiology

If Meselson and Stahl let replication proceed for one more round of replication (3 rounds) what fraction of the daughter DNA molecules would be of intermediate density?

A: None B: ½ C: ¼ D: 1/8

Biology & Microbiology