Cell Theory and Organization Quiz

All living and nonliving things are made up of which of the following?

• Cells

• Atoms

• Water

• Minerals

Answer explanation

All living and nonliving things are composed of atoms, which are the basic building blocks of matter. Cells are made of atoms, but not all nonliving things are made of cells. Water and minerals are also made of atoms, but they are not the fundamental unit.

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NGSS.MS-PS1-1

Which of the following can be identified as the smallest units of life?

• Tissues

• Cells

• Organs

• Organ systems

Answer explanation

Cells are the smallest units of life, as they are the basic building blocks of all living organisms. Tissues, organs, and organ systems are made up of cells, making them larger and more complex structures.

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• Which of the following terms would be the appropriate title for the level of complexity labeled Y?

• Cell

• Tissue

• Organ system

• Organ

Answer explanation

The term 'Organ system' refers to a higher level of complexity that encompasses multiple organs working together to perform specific functions, making it the appropriate title for level Y.

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NGSS.MS-LS1-3

Which of the following correctly orders the organization in plants and animals from least to most complex?

• Organisms ➔ organ systems ➔ organs ➔ tissues ➔ cells

• Tissues ➔ cells ➔ organs ➔ organisms ➔ organ systems

• Organs ➔ tissues ➔ organisms ➔ cells ➔ organ systems

• Cells ➔ tissues ➔ organs ➔ organ systems ➔ organisms

Answer explanation

The correct order from least to most complex is: Cells ➔ tissues ➔ organs ➔ organ systems ➔ organisms. This reflects the hierarchical organization in biological systems, starting from the smallest unit, the cell.

Tags

NGSS.MS-LS1-3

Which of the following terms would be appropriate title for the level of complexity labeled X?

• Cell

• Organ

• Organism

• Tissue

Answer explanation

The term 'Organism' represents the highest level of biological complexity, encompassing all living systems. In contrast, 'Cell', 'Tissue', and 'Organ' refer to lower levels of organization, making 'Organism' the correct choice for level X.

Which of the following best describes the relationship between cells and living things in general?

• The larger the living thing, the larger are its cells.

• All living things are made up of one or more cells.

• The number of cells in all living things is the same.

• There is one kind of cell of which all living things are made.

Answer explanation

The correct choice, 'All living things are made up of one or more cells,' highlights the fundamental concept of biology that all organisms, regardless of size or type, consist of cells, which are the basic units of life.

Tags

NGSS.MS-LS1-1

What sort of evidence would support at least one of the components of cell theory?

• Rocks and other nonliving things are composed of cells.

• Cells are observed converting one form of energy into another.

• A microscope is necessary to make observations of nearly all cells.

• The origin of all cells observed can be traced to previous cells.

Answer explanation

The statement 'The origin of all cells observed can be traced to previous cells' directly supports the cell theory, which states that all cells arise from pre-existing cells, confirming a fundamental principle of cellular biology.

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The data shown in the table best illustrates which part of the cell theory?

• All living things are made up of cells.

• Cells are the basic unit of living things.

• Organisms can be single celled or many celled.

• All cells come from preexisting cells.

Answer explanation

The data in the table supports the idea that all cells originate from preexisting cells, highlighting the continuity of life and the process of cell division, which is a key aspect of cell theory.

Tags

NGSS.MS-LS1-1

Which of the following is the best definition for homeostasis?

• The movement of particles from one side of a cellular membrane to another.

• The tendency of particles to distribute themselves evenly across a membrane.

• The ability to maintain and regulate stable internal conditions of the cell.

• The transfer of molecules in response to excess solute relative to a solution.

Answer explanation

Homeostasis refers to the ability of a cell to maintain stable internal conditions despite external changes. This definition highlights the importance of regulation and stability, making it the best choice among the options.

Which of the following organelles is found in plant cells but NOT in animal cells?

• Cell membrane

• Nucleus

• Chloroplasts

• Mitochondria

Answer explanation

Chloroplasts are organelles responsible for photosynthesis and are found only in plant cells. In contrast, cell membranes, nuclei, and mitochondria are present in both plant and animal cells.

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