Week 3 Bio 102 Review

The kingdoms of Eukarya are...

• Eubacteria, Protists, Animals, and Plants

• Euryarchaeota, Fungi, Animals, and Plants

• Protists, Archae, Archaebacteria, and Animals

• Protists, Plants, Fungi, and Animals

Heterotrophs...

• Obtain nutrients by ingesting organisms

• Derive their energy from the sun

• Derive energy from fossil fuels

Tight junctions...

• prevent leakage of extracellular fluid across a layer of epithelial cells​

• fasten cells together into sheets​

• are channels that allow molecules to flow between cells​

Answer explanation

Tight junctions prevent leakage of extracellular fluid across a layer of epithelial cells​

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Anchoring junctions fasten cells together into sheets​

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Gap junctions are channels that allow molecules to flow between cells​

What kind of symmetry does this German Shepherd have?

• Asymmetry

• Radial Symmetry

• Bilateral Symmetry

Protostomes..

• Are often called invertebrates

• Include vertebrates

• Include chordates

What are homologous structures?

• Traits just newly appearing via mutation in the most recent ancestor of a newly formed branch

• Functionally similar structures that have independent evolutionary origins

• Features shared by two species that were inherited from a common ancestor

The most abundant invertebrates are...

• Arthropods

• Ray-finned fish

An example of a monotreme would be...

• An amphibian

• A lamprey

• A hagfish

• An echidna

What is a key difference between amphibians and reptiles?

• Reptiles can lay their eggs on land; amphibians cannot

• Amphibians are amniotes

• Amphibians can lay their eggs on land; reptiles cannot

• Reptiles have mucous-covered skin and amphibians do not

What do plant cells have that animal cells do not?

• A cell membrane

• A cell wall

• A Golgi apparatus

• A vacuole