Unit 2 Quiz - Origins of Life

These are formed from bacterial mats put down over time and they are the first fossil evidence of life. They can still be found on Earth today.

• endospores

• eukaryotes

• stromatolites

• geyser columns

First cells and organisms to have evolved must have been_______________ because of lack of _____________

• anaerobic , oxygen

• aerobic, oxygen

• anaerobic, carbon dioxide

• aerobic, oxygen

The apparatus in the Miller/Urey experiment was used to mimic what?

• Proteins
• Present Earth conditions
• Early Earth conditions
• Nucleic acids (DNA/RNA)

Based upon the conditions of the early Earth, which forms of live most likely appeared first?

• Prokaryotic and aerobic

• Prokaryotic and anaerobic

• Eukaryotic and aerobic

• Eukaryotic and anaerobic

Tags

L.15.8

Why is Deep Sea Vent Theory a possible explanation for life on Earth?

• It has biological communities and energy
• It is dark and no oxygen
• It has a light source and energy from the vents
• High levels of electricity are generated there

The graph illustrates the change in oxygen concentration that occurred around 2.3 billion years ago. Which of the events listed below most likely led to this rapid rise in atmospheric oxygen?

• Evolution of multicellularity

• Evolution of photosynthetic bacteria

• Origin of land plants

• Origin of land animals

What kind of cell is this?

• Eukaryotic
• Prokaryotic
• primitive cell

• arachaeal cell

What characteristics first appear in the fossil record during the Cambrian Explosion? Select ALL that apply.

• adaptations for predation, such as large bodies and claws

• the ability to photosynthesize, which produces oxygen as a waste produce

• defense adaptations such as sharp spines and body armor

• the ability to acquire energy from inorganic molecules

The movement of genes from one genome to another is called

• genetic transduction

• lateral gene transfer

• pseudomutation

• horizontal gene transfer

I am single celled. I am prokaryotic. I have a cell wall that's not made of peptidoglycan. I also live in very extreme conditions. Which domain do I belong in?

• Bacteria

• Archaea

• Eukarya