Anton van Leeuwenhoek and the Discovery of Microorganisms

In what year did Anton van Leeuwenhoek observe protists in pond water?

• 1674

• 1776

• 1879

• 1620

Why was Anton van Leeuwenhoek’s discovery of “tiny animals” in pond water significant for science?

• It was the first observation of microorganisms, leading to the field of microbiology.

• It proved that all life comes from eggs.

• It showed that plants can make their own food.

• It discovered the process of photosynthesis.

According to the cell theory, what is the most basic unit of life?

• Atom

• Cell

• Tissue

• Organ

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-1

Why is the cell theory important for understanding living things? (DoK Level 2)

• It explains why all living things are made of water

• It provides a foundation for studying the structure and function of all living organisms

• It describes how plants grow

• It shows that only animals have cells

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-1

What does the term "prokaryote" literally mean?

• After kernel

• Before kernel

• With kernel

• Double kernel

Which of the following best describes the organelles in eukaryotic cells?

• Organelles are not present.

• Organelles are bound by membranes and have specific functions.

• Organelles float freely without any membrane.

• Organelles are only found in prokaryotes.

Tags

NGSS.MS-LS1-2

Why is the presence of membrane-bound organelles important in eukaryotic cells?

• It allows for specialized functions within the cell.

• It prevents the cell from dividing.

• It makes the cell smaller.

• It removes the need for a nucleus.

Tags

NGSS.MS-LS1-2

What is the term for the theory that explains how eukaryotic cells evolved from prokaryotic cells through the ingestion of free-living cells?

• Photosynthesis

• Endosymbiosis

• Mutation

• Fermentation

Tags

NGSS.MS-LS4-2

Explain how the theory of endosymbiosis provides a possible explanation for the evolution of eukaryotic cells from prokaryotic cells.

• It suggests that eukaryotic cells evolved by splitting into smaller cells.

• It suggests that eukaryotic cells evolved by ingesting free-living prokaryotic cells that were not destroyed and became part of the cell.

• It suggests that eukaryotic cells evolved by losing their nucleus.

• It suggests that eukaryotic cells evolved by merging with viruses.

Tags

NGSS.MS-LS4-2

What is the main idea illustrated by the process of endosymbiosis shown in the diagram?

• The evolution of eukaryotic cells from prokaryotic cells through the ingestion of other bacteria

• The process of photosynthesis in plant cells

• The breakdown of bacteria by prokaryotes

• The reproduction of prokaryotic cells

Tags

NGSS.MS-LS4-2