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Biology

Review Questions

BiologyReview Questions

Review Questions

4.

What event is thought to have contributed to the evolution of eukaryotes?

  1. global warming
  2. glaciation
  3. volcanic activity
  4. oxygenation of the atmosphere
5.

Which characteristic is shared by prokaryotes and eukaryotes?

  1. cytoskeleton
  2. nuclear envelope
  3. DNA-based genome
  4. mitochondria
6.

Mitochondria most likely evolved by _____________.

  1. a photosynthetic cyanobacterium
  2. cytoskeletal elements
  3. endosymbiosis
  4. membrane proliferation
7.

Which of these protists is believed to have evolved following a secondary endosymbiosis?

  1. green algae
  2. cyanobacteria
  3. red algae
  4. chlorarachniophytes
8.

Protists that have a pellicle are surrounded by ______________.

  1. silica dioxide
  2. calcium carbonate
  3. carbohydrates
  4. proteins
9.

Protists with the capabilities to perform photosynthesis and to absorb nutrients from dead organisms are called ______________.

  1. photoautotrophs
  2. mixotrophs
  3. saprobes
  4. heterotrophs
10.

Which of these locomotor organs would likely be the shortest?

  1. a flagellum
  2. a cilium
  3. an extended pseudopod
  4. a pellicle
11.

Alternation of generations describes which of the following?

  1. The haploid form can be multicellular; the diploid form is unicellular.
  2. The haploid form is unicellular; the diploid form can be multicellular.
  3. Both the haploid and diploid forms can be multicellular.
  4. Neither the haploid nor the diploid forms can be multicellular.
12.

Which protist group exhibits mitochondrial remnants with reduced functionality?

  1. slime molds
  2. diatoms
  3. parabasalids
  4. dinoflagellates
13.

Conjugation between two Paramecia produces ________ total daughter cells.

  1. 2
  2. 4
  3. 8
  4. 16
14.

What is the function of the raphe in diatoms?

  1. locomotion
  2. defense
  3. capturing food
  4. photosynthesis
15.

What genus of protists appears to contradict the statement that unicellularity restricts cell size?

  1. Dictyostelium
  2. Ulva
  3. Plasmodium
  4. Caulerpa
16.

An example of carbon fixation is _____________.

  1. photosynthesis
  2. decomposition
  3. phagocytosis
  4. parasitism
17.

Which parasitic protist evades the host immune system by altering its surface proteins with each generation?

  1. Paramecium caudatum
  2. Trypanosoma brucei
  3. Plasmodium falciparum
  4. Phytophthora infestans
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