Bio 2 Midterm

Which type of cell does not have a nucleus?

• Eukaryotes

• Prokaryotes

• Animal Cells

• Plant Cells

Where do all cells come from according to the cell theory?

• Bacteria

• Plants

• Other Cells

• Viruses

According to the Geologic Time Scale what is considered to be the earliest eon?

• Proterozoic

• Paleozoic

• Phanerozoic

• Hadean

According to the Geologic Time Scale which of the following periods began first?

• Jurassic

• Triassic

• Cretaceous

• Quaternary

Which of the following periods is NOT in the Paleozoic Era?

• Precambrian

• Devonian

• Silurian

• Mississippian

Which of the following derived characteristics does every organism on the cladogram have?

• Backbone

• Ability to Purr

• Hair

• Carnivorous

Which of the following organisms is the primate most closely related to?

• Amphibians

• Crocodiles

• Ray-finned fish

• Rodents

What is the definition of a homologous structure?

• an organ, bone, or other body part that shares a common ancestry and similar underlying structure, despite potentially having different functions in different species

• similar features in different species that serve the same function, but evolved independently due to similar environmental pressures, rather than stemming from a common ancestor

• a body part or organ that has lost its original function in the course of evolution, but retains it from an ancestral species

• none of the above

What is the definition of an analogous structure

• body parts, organs, or systems in different species that share a common evolutionary origin, meaning they are derived from a similar structure in a common ancestor, even if they have different functions. 

• similar features in different species that serve the same function, but evolved independently due to similar environmental pressures, rather than stemming from a common ancestor

• a body part or organ that has lost its original function in the course of evolution, but retains it from an ancestral species

• none of the above

Which of the following correctly describes the panspermia theory?

• life on Earth may have originated in hydrothermal vents on the ocean floor, where minerals and chemicals from the Earth's crust mix with seawater, providing a potential environment for life's beginnings

• the building blocks of life, like amino acids and nucleotides, could have formed in a primordial soup-like environment in early Earth's oceans, lakes or even on rocks, and then assembled into complex structures 

• the idea that life exists throughout the universe and can spread between planets. The theory suggests that life on Earth originated elsewhere and was brought here by meteorites, asteroids, comets, and other space debris. 

• the universe began from a very small, hot, dense point and has been expanding and cooling ever since, approximately 13.8 billion years ago