What is a scientific theory?

An explanation of a scientific event supported by scientific evidence

Louis Pasteur's 1859 experiment showed that a boiled nutrient broth did not give rise to spontaneous new life, but broth exposed to air carrying microbes thrived and gave rise to life. This experiment demonstrated which of the following origin of life theories?

Biogenesis: life can only come from life

Abiogenesis: Life can arise from non-living objects

Spontaneous generation: Life can spontaneously generate with or without the presence of life

Explain the concept of abiogenesis and its significance in the study of the origin of life.

Abiogenesis is the concept of life arising from non-living matter. It is significant in the study of the origin of life as it provides a possible explanation for how life first began on Earth.

Abiogenesis is the concept of life arising from other living organisms. It is significant in the study of the origin of life as it proves that life can only come from existing life.

Abiogenesis is the concept of life arising from extraterrestrial sources. It is significant in the study of the origin of life as it supports the idea of panspermia.

Abiogenesis is the concept of life arising from supernatural forces. It is significant in the study of the origin of life as it challenges religious beliefs.

What is the ongoing challenge in studying the origin of life?

Turning speculative ideas into testable scientific hypotheses

Simulating sunlight and geothermal heat in the lab

Finding fossils of the first life forms

Creating life in the laboratory

What is the role of cells in multicellular organisms as per modern cell theory?

They work together for survival

What is chemical evolution in the context of the origin of life?

Gradual process of complex molecules forming from simpler molecules

Sudden appearance of life from non-living matter

Evolution of life based on physical changes

Formation of life from supernatural forces

Explain the role of organic molecules in the process of chemical evolution.

Organic molecules provided the building blocks for the formation of life.

Organic molecules played no role in chemical evolution

Chemical evolution was not influenced by the presence of organic molecules

Organic molecules hindered the process of chemical evolution

What was the Miller-Urey experiment's significance?

It demonstrated biomolecules can form under ancient Earth-like conditions

It proved life exists elsewhere in the galaxy

It disproved the theory of evolution

Miller and Urey were the first to show that simple, inorganic compounds could produce _________, the building block for life

simple organic molecules, including amino acids

simple organic molecules could give rise to life

simple biotic organisms could spontaneously generate

What was the purpose of the Miller-Urey experiment?

To simulate the conditions of early Earth and test the hypothesis that organic molecules could have formed from inorganic precursors.

To study the effects of radiation on organic molecules

To create new forms of life in the laboratory

To test the theory of evolution

Why is endosymbiosis important in modern biology?

It occurs in many organisms today, providing insights into symbiotic relationships.

It only explains ancient events.

It is irrelevant to current biological processes.

What does the presence of life's molecules in meteorites suggest?

Life's molecules can form in various environments

Life's molecules cannot form in the absence of water

Meteorites are the sole source of life on Earth

What role do prokaryotes play in the gut of termites?

They help termites digest wood.

They cause diseases in termites.

They produce light for termites.

They make termites immune to predators.

What is the endosymbiotic theory?

An explanation for how eukaryote cells evolved from prokaryote cells

An explanation for how prokaryote cells evolved from eukaryote cells

An explanation for how cells evolved from non-living matter

An explanation for how cells evolved from viruses

Which of the following characteristics make mitochondria and chloroplasts different from other organelles?

They were once primitive (old) prokaryotes

The are found in both prokaryotic and eukaryotic cells.

What modern-day observations support the endosymbiotic theory?

mitochondria have two membranes

chloroplasts have their own circular chromosomes

mitochondria have their own ribosomes

What is secondary endosymbiosis?

The process of eukaryote cells engulfing other eukaryote cells

The process of eukaryote cells evolving into prokaryote cells

The process of prokaryote cells evolving into eukaryote cells

The process of prokaryote cells engulfing other prokaryote cells

Which of the following is evidence to support the endosymbiotic theory?

Mitochondria and chloroplasts have their own DNA, which is similar to prokaryotic DNA.

Prokaryotes have the same number and types of enzymes as eukaryotes.

All eukaryotic cells have a double-layered membran composed of phosplipids and proteins.

Fossil evidence shows that the first forms of life were prokaryotic cells.

What is a key aspect of modern cell theory?

Energy flow occurs within cells

Cells are the basic unit of life

What is secondary endosymbiosis?

A process where eukaryotic cells engulf other eukaryotic cells.

A theory that explains the origin of mitochondria.

A process where prokaryotic cells engulf other prokaryotic cells.

A theory that explains the origin of chloroplasts.

What was the main goal of the Miller-Urey experiment?

To test if complex molecules of life can form from simple chemistry

To prove the theory of evolution

To simulate the ancient water cycle

How do mitochondria and chloroplasts divide?

By binary fission, similar to bacteria.

By mitosis, like eukaryotic cells.

What does the first principle of classical cell theory state?

All living things are made up of one or more cells

Cells are the basic unit of function in living organisms

Cells come from pre-existing cells

Which gases were used in the Miller-Urey experiment to simulate the ancient Earth's atmosphere?

Carbon Monoxide, Sulfur Dioxide, and Nitrous Oxide

Oxygen, Nitrogen, and Carbon Dioxide

What is a piece of evidence supporting the endosymbiotic theory?

Mitochondria and chloroplasts have their own DNA similar to bacterial DNA.

Mitochondria and chloroplasts cannot divide independently.

Mitochondria and chloroplasts are larger than bacteria.

Mitochondria and chloroplasts have no DNA.

According to the endosymbiotic theory, what did mitochondria evolve from?

Bacteria that used oxygen to produce energy.

Which of the following is NOT a characteristic of prokaryotic cells?

Lack of membrane-bound organelles.

What was the Spontaneous Generation Theory?

The belief that living organisms arise from non-living matter

The concept that all cells have the same chemical composition

The idea that life comes from pre-existing cells

The theory that cells are the basic unit of life

Resource Library

Science

Biology

History Of Life On Earth

Unit 5.4 The History Of Cells

Unit 5.4 The History of Cells

Interactive Video

•

Science

•

9th Grade

•

Practice Problem

•

Hard

•

NGSS

HS-LS1-6, HS-ESS3-1, MS-LS1-1

+24

Standards-aligned

Samah Al-hamadi

FREE Resource

63 questions

Show all answers

SLIDE QUESTION

30 sec • Ungraded

Tags

NGSS.HS-ESS3-1

NGSS.HS-ESS3-2

CATEGORIZE QUESTION

3 mins • 1 pt

Organize these options into the right categories

Groups:

(a) Prokaryotic Cells

(b) Eukaryotic Cells

has membrane-bound organelles

no membrane-bound organelles

EU "DO"

unicellular

PRO "NO"

No nucleus

Uni/Multicellular

Has a nucleus

Tags

NGSS.MS-LS1-1

MATCH QUESTION

1 min • 1 pt

Match the following

Eukaryote Image

do have a nucleus

Eu "do"

do not have a nucleus

Prokaryote Image

Pro "No"

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Bacteria are an example of a _________ cell.

Eukaryotic

Prokaryotic

animal

plant

SLIDE QUESTION

30 sec • Ungraded

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS2-4

NGSS.HS-ESS3-1

NGSS.HS-LS1-5

NGSS.HS-LS2-5

SLIDE QUESTION

30 sec • Ungraded

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

SLIDE QUESTION

30 sec • Ungraded

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

NGSS.MS-ESS2-4

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

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Unit 5.4 The History of Cells

63 questions

Organize these options into the right categories

Match the following

Bacteria are an example of a _________ cell.

What is a scientific theory?

All organisms are comprised of one or more (a) .

Which of the following terms is another name for spontaneous generation?

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