Exam 28: The Origin and Evolution of Eukaryotes

Which of the following mitigation strategies would be most likely to cause evolution of a drug-resistant strain of Plasmodium?

Which of the following is a characteristic commonly found in ciliates?

Similar to most amoebozoans, the forams and the radiolarians also have pseudopods, as do some of the white blood cells of animals. If one were to construct a taxon that included all organisms that have cells with pseudopods, what type of evolutionary pattern would the tree show?

A failure in which of the following processes can result in the formation of a supercell that is characteristic of plasmodial slime molds?

The chloroplasts of land plants are thought to have been derived according to which evolutionary sequence?

Use the following information to answer the question. Healthy individuals of Paramecium bursaria contain photosynthetic algal endosymbionts of the genus Chlorella. In addition, P. bursaria also ingests bacteria. Which term most accurately describes the nutritional mode of healthy P. bursaria?

Which of the following organisms is a producer?

Which of the following pairs of protists and their ecological roles are correctly matched?

Which of the following characteristics do dinoflagellates exhibit?

Which two genera have members that can evade the human immune system by frequently changing their surface proteins?

In a life cycle with alternation of generations, multicellular haploid forms alternate with ________.

Slime molds and fungi were once included in the same taxonomic group due to some specific similarities in morphology and lifestyle. These two groups are now classified in different taxonomic groups. How would you describe these similarities now that the two groups are classified separately?

Biologists think that endosymbiosis gave rise to mitochondria before plastids partly because ________.

You are given four test tubes, each containing an unknown protist, and your task is to read the following description and match these four protists to the correct test tube. Use the information in the table to answer the question. Based on these data, what type of organism is present in tube 4?

Use the following information to answer the question. Healthy individuals of some Paramecium species contain photosynthetic algal endosymbionts of the genus Chlorella. The Chlorella provide their hosts with glucose and oxygen, and Paramecium provides its Chlorella with protection and motility. A Paramecium cell has lost its Chlorella. It might be able to replenish the Chlorella by ingesting them without subsequently digesting them. Which of the following situations would be most favorable to the reestablishment of resident Chlorella, assuming compatible Chlorella are present in the Paramecium's habitat?

In a recent study, researchers found that carbon dioxide was pumped to the ocean floor after adding a small amount of iron to the water. Which of the following organisms was likely responsible for this result?

After studying a particular species of protist, you suspect that it has obtained a chloroplast via secondary endosymbiosis. Which of the following information would confirm your hypothesis?

A seaweed that grows in shallow, cold water and undergoes heteromorphic alternation of generations is most probably what type of alga?

Which of the following statements compares the mitosomes of diplomonads and mitochondria of other types of eukaryotes?

According to the endosymbiotic theory, it was adaptive for the larger host cell to keep the engulfed cell alive, rather than digesting it as food because ________.