Origins of Life MCQs with Answers

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Origins of Life Online Quiz

By presenting 3 options to choose from, Origins of Life Quiz which cover a wide range of topics and levels of difficulty, making them adaptable to various learning objectives and preferences. You will have to read all the given answers of Origins of Life Questions and Answers and click over the correct answer.

• Test Name: Origins of Life MCQ Quiz Practice
• Type: Quiz Test
• Total Questions: 40
• Total Marks: 40
• Time: 40 minutes

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Origins of Life Quiz

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1 / 40

The theory that life arose from non-living matter is called _____.

Biogenesis

Paleobiology

Abiogenesis

2 / 40

The first organisms were most likely _____.

Photosynthetic

Aerobic

Anaerobic

3 / 40

The earliest evidence of life on Earth comes from _____.

Ice cores

Meteorites

Fossilized stromatolites

4 / 40

The first cells were most likely _____.

Eukaryotic

Prokaryotic

Viral

5 / 40

The first cells likely used _____.

DNA for genetic information and RNA for catalytic activity

Proteins for both genetic information and catalytic activity

RNA for both genetic information and catalytic activity

6 / 40

The "primordial soup" hypothesis suggests that life originated _____.

In hydrothermal vents

On the surface of minerals

In a soup of organic molecules in Earth's early oceans

7 / 40

The "RNA world" hypothesis suggests that early life forms primarily used _____.

DNA for genetic information and RNA for catalysis

RNA for both genetic information and catalysis

Proteins for both genetic information and catalysis

8 / 40

The first genetic material was most likely _____.

Protein

RNA

DNA

9 / 40

The first cells likely obtained energy through _____.

Anaerobic respiration

Photosynthesis

Fermentation

10 / 40

The earliest genetic material was most likely _____.

DNA

RNA

Protein

11 / 40

The "deep sea vent" hypothesis suggests that life originated _____.

In the atmosphere

In warm tidal pools

Around hydrothermal vents on the ocean floor

12 / 40

The first cells on Earth were most likely _____.

Eukaryotic

Multicellular

Prokaryotic

13 / 40

The process by which simple organic molecules combine to form larger, more complex molecules is called _____.

Osmosis

Photosynthesis

Polymerization

14 / 40

The oldest known fossils are approximately _____.

3.5 billion years old

1.5 billion years old

500 million years old

15 / 40

The theory that suggests life may have originated in deep-sea hydrothermal vents is known as the _____.

Deep-sea vent hypothesis

Hydrothermal origin hypothesis

Panspermia hypothesis

16 / 40

The first self-replicating molecules were most likely _____.

Lipids

Proteins

RNA

17 / 40

The building blocks of proteins are _____.

Monosaccharides

Amino Acids

Nucleotides

18 / 40

The term "abiogenesis" refers to the _____.

Origin of life from non-living matter

Origin of eukaryotic cells

Origin of multicellular organisms

19 / 40

The first cells were most likely surrounded by a _____.

Protein shell

Carbohydrate wall

Lipid membrane

20 / 40

The earliest life forms on Earth were most likely _____.

Photoautotrophs

Chemoautotrophs

Chemoheterotrophs

21 / 40

The "iron-sulfur world" hypothesis suggests that life originated _____.

In shallow, sunlit pools

At hydrothermal vents rich in iron and sulfur

In the icy crust of comets

22 / 40

The "primordial soup" hypothesis was proposed by _____.

Charles Darwin

Alexander Oparin

Gregor Mendel

23 / 40

The first metabolic pathways were likely _____.

Aerobic

Photosynthetic

Anaerobic

24 / 40

The process by which early Earth's atmosphere became oxygen-rich is called _____.

The Great Oxidization Event

The Cambrian Explosion

The Permian-Triassic Extinction

25 / 40

The theory of panspermia suggests that life originated _____.

In deep-sea hydrothermal vents

Elsewhere in the universe and was brought to Earth

Spontaneously on Earth

26 / 40

The first cells likely obtained energy through _____.

Anaerobic respiration

Fermentation

Chemiosmosis

27 / 40

The first organisms were likely to have been _____.

Chemoheterotrophs

Photoautotrophs

Chemoautotrophs

28 / 40

The concept of "chemical evolution" refers to _____.

The evolution of life from non-living matter

The evolution of chemical elements in the universe

The formation of complex organic molecules from simpler ones

29 / 40

The theory of abiogenesis suggests that life _____.

Always existed on Earth

Arose from non-living matter

Was created by a divine being

30 / 40

The first cells were most likely _____.

Eukaryotic

Multicellular

Prokaryotic

31 / 40

The first genetic material may have been formed on _____.

Clay surfaces

Rocks

Ice crystals

32 / 40

The "RNA world" hypothesis suggests that early life was based on _____.

RNA molecules

Protein molecules

DNA molecules

33 / 40

The "iron-sulfur world" hypothesis suggests that life originated _____.

In shallow, sunlit pools

At hydrothermal vents rich in iron and sulfur

In the icy crust of comets

34 / 40

The process of chemical evolution is also known as _____.

Prebiotic evolution

Radiometric dating

Speciation

35 / 40

The first organisms on Earth likely lived in _____.

Volcanic craters

Hydrothermal vents

Polar ice caps

36 / 40

The first self-replicating molecules were most likely _____.

Lipids

Proteins

RNA

37 / 40

The first organisms on Earth were most likely _____.

Multicellular

Single-celled

A combination of both

38 / 40

The first photosynthetic organisms were likely _____.

Cyanobacteria

Archaea

Fungi

39 / 40

The process by which early Earth's atmosphere became oxygen-rich is called _____.

The Permian-Triassic Extinction

The Cambrian Explosion

The Great Oxidization Event

40 / 40

The process by which simple organic molecules combine to form larger, more complex molecules is called _____.

Polymerization

Osmosis

Photosynthesis

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