Cell Characteristics and Domain Identification

Which organism has the following characteristics: heterotrophic, eukaryotic, unicellular or multicellular, cell wall made of chitin?

• protist

• plant

• fungi

• archaebacteria

Which organism is most likely algae?

• A. Organism 1

• B. Organism 2

• C. Organism 3

• D. Organism 4

Based on the observations, which organisms most likely belong to the domain bacteria and how could the student verify that this is true?

• A. Organism 1 and 2, because both are single-celled. The student can verify both are bacteria if they are both autotrophs.

• B. Organism 1 and 4, because both are single-celled and contain a nucleus. The student can verify both are bacteria if they have a cell wall of cellulose.

• C. Organisms 2 and 3, because both are single-celled and do not have a nucleus. The student can verify both are bacteria if they have a cell wall of peptidoglycan.

• D. Organisms 2 and 4, because both are single-celled. The student can verify if both are bacteria if they are both heterotrophs.

Which of the following traits do the salamander and the lizard share?

• A. Jaws only

• B. Jaws and Lungs

• C. Claws or nails

• D. Jaws, Lungs, and Claws or nails

Which feature do prokaryotic and eukaryotic cells share?

• nucleolus

• cytoplasm

• nuclear membrane

• membrane-bound organelles

Based on the cladogram, what other members of the kingdom Plantae also have vascular tissue?

• clubmosses

• ferns

• quillworths

• spikemosses

A cell with chloroplasts and a cell wall made of cellulose would likely belong to a(n):

• frog from Kingdom Animalia.

• mushroom from Kingdom Fungi.

• oak tree from Kingdom Plantae.

• paramecium from Kingdom Protista.

In the domain system of classification, prokaryotes are divided into two domains: Bacteria and Archaea. The two domains differ in all BUT one feature. That is, both A) have prokaryotic cells. B) have identical cell walls. C) thrive in extreme environments. D) are able to live under anaerobic conditions.

• have prokaryotic cells

• have identical cell walls

• thrive in extreme environments

• are able to live under anaerobic conditions

According to the cladogram for the six-kingdom system, which of the following is true?

• the Eubacteria gave rise to all life on Earth.

• the Archaebacteria gave rise to the eukaryotes.

• the Archaebacteria are classified as eukaryotic.

• only the bacterial kingdoms have a common ancestor.

Which characteristic BEST indicates that the organism in question is a fungus, not a plant?

• A) cell walls

• B) eukaryotic

• C) heterotrophic

• D) usually multicellular