Lecture Two - History of Life Flashcards
Which of the elements below is found in ALL organic compounds?
A) Carbon
B) Nitrogen
C) Phosphorus
D) Oxygen
A) Carbon
Consider the different types of life we have on Earth now. The first form of life was most likely:
A) Animal
B) Plant
C) Fungus
D) Bacteria
E) Protist
D) Bacteria
A prokaryotic cell can be described as:
A) a type of cell with no nucleus
B) a type of cell with organelles
C) a type of cell with no cell membrane
A) a type of cell with no nucleus
What is the purpose of photosynthesis in all organisms?
A) to create oxygen
B) to create sugars that other organisms can eat
C) to create sugars that can be used by the photosynthetic organism itself
D) to use up energy from the sun
A) to create oxygen
Of the options below, which one indicates the correct order in which this happened starting at the earliest:
A) prokaryotes, eukaryotes, multicellularity, photosynthesis
B) prokaryotes, eukaryotes, photosynthesis, multicellularity
C) prokaryotes, photosynthesis, eukaryotes, multicellularity
D) prokaryotes, photosynthesis, multicellularity, eukaryotes
C
Which of the statements below about the history of Earth is true? Select all that apply:
A) Different species of humans never overlapped
B) Prokaryotes were the first organisms to use oxygen
C) Life began as soon as the Earth was formed
D) Plants were the first organism to live on land
E) Photosynthesis was first seen in multicellular algae
B)
Which of the following is required for the first life on Earth to begin?
A) Oxygen
B) UV radiation
C) Carbon dioxide
D) Hydrothermal vents
E) Organic compounds
F) Volcanic activity
E) organic compounds
Consider the events that have occurred in the history of life. Place the following events in order from the earliest (1) to the most recent (5):
______ multicellularity organisms appear
______ humans appear
______ atmospheric oxygen increases
______ dinosaurs go extinct
______ eukaryotes evolve
3 - multicellular organisms appear
5 - humans appear
2 - atmospheric oxygen increases
4 - dinosaurs go extinct
1 - eukaryotes evolve
An increase in oxygen in the atmosphere was a major change during the history of life on Earth. Which of the following statements best describes where this oxygen originated?
A) oxygen was released into the atmosphere when plants started to photosynthesize. The plants release this oxygen as a waste product when making sugars.
B) oxygen was released into the atmosphere when bacteria started to photosynthesize. The bacteria release this oxygen as a waste product when making sugars.
C) oxygen was released into the atmosphere when algae started to photosynthesize. The algae release this oxygen so that animals can use it.
D) oxygen was released into the atmosphere when plants started to photosynthesize. The plants release this oxygen so that animals can use it.
E) oxygen was released into the atmosphere when algae started to photosynthesize. The algae release this oxygen as a waste product when making sugars.
F) oxygen was released into the atmosphere when bacteria started to photosynthesize. The bacteria release this oxygen so that animals can use it.
B)
What are the four organic compounds found in cells?
carbohydrates, nucleic acids, phospholipids, and amino acids
List the major events in the history of life on Earth in chronological order
- First organism were bacteria (prokaryotic cells)
- Photosynthesis began in bacteria
- oxygen increased in the atmosphere
- Eukaryotic cells formed
- Multicellular organisms formed
- Dinosaurs went extinct
- Humans appeared
What is endosymbiosis?
This is the process that led to the eukaryotic cell!
When fish first evolved, which of the following photosynthetic organisms were already on Earth? Select all that apply:
A) land plants
B) algae
C) bacteria
B), & C)
In museums, sometimes we see different species of dinosaurs together, as though this was something you would see if you got in a time machine and found yourself on Earth 100 million years ago. One of those situations is depicted below looks like a Tyrannosaurus attacking a Stegosaurus. If this interpretation is correct, what’s wrong with this picture?
A) the Stegosaurus should be attacking the Tyrannosaurus
B) the Tyrannosaurus should be larger
C) these two animals did not live at the same time
C) these two animals did not live at the same time
In the classic cartoon “The Flintstones”, we see things together like humans, dinosaurs, and plants. Your classmate thinks that this depiction is accurate in terms of the types of organisms that occurred on Earth at the same time. Do you agree with your classmate? Explain why or why not.
Although I believe that mammals, dinosaurs and plants could have been organisms that lived together at the same time, dinosaurs were extinct before the first appearance of the genus homo on Earth. Therefore, this depiction is not accurate in terms of the types of organisms occurring on Earth at the same time
