AnswersTCISD Summer Science 7 CRCell Theory

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What did Virchow observe that led him to determine one of the main components of cell theory?

A
a cell splitting into two cells
B
small “rooms” in cork
C
plants that were composed of cells
D
microscopic units making up parts of animals
2
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Tumu’s class was given an assignment to feature a scientist that contributed to the development of the cell theory. The class decided to use images to feature the scientist of their choice.Which image would Tumu most likely use in his assignment to feature Rudolf Virchow?

A
the magnified shapes of cells in a piece of cork
B
the different cells that make up a plant leaf
C
the types of cells at work in the human body
D
the way root cells reproduce to increase root length
3

I. Plant cells are formed from fertile soil.II. Animal cells must function properly for an organism to be healthy.III.Cells make up the petals, stem, and leaves of a lily plant.IV. Bacteria are produced from other living bacteria.

A
Schwann would make Statement I and Schleiden would make Statement IV.
B
Schwann would make Statement II and Schleiden would make Statement III.
C
Schwann would make Statement III and Schleiden would make Statement II.
D
Schwann would make Statement IV and Schleiden would make Statement I.
4

Nuris is writing a paper on the scientist who first named cells after studying cork under a microscope. Who is her paper about?

A
Virchow
B
Schwann
C
Hooke
D
Leeuwenhoek
5

Which finding would have disproved Virchow’s hypothesis?

A
Animalcules are not organisms.
B
Animals are made of non–cell-based matter.
C
Plants are made of non–cell-based matter.
D
Cells can generate from nonliving matter.
6

Why are cells called the building blocks of an organism?

A
They are visible to the naked eye.
B
They are made from nonliving materials.
C
They are the basic unit of life.
D
They are able to generate new cells.
7

Which timeline best shows the history of the development of cell theory?

A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
8

Which could be a reason viruses are considered nonliving things?

A
Viruses come from cells.
B
Viruses produce cells.
C
Viruses are made of DNA and proteins, but not cells.
D
Viruses can contain one or multiple cells.
9

Muscles in a kangaroo’s legs work because of the cells that make up the muscle. Which component of cell theory does this best illustrate?

A
All living things are made of cells.
B
Cells are the basic unit of structure and function of all living things.
C
All cells come from other cells.
D
Cells are generated from nonliving materials.
10

Which best describes the importance of the microscope to the development of cell theory?

A
Microscopes color different parts of cells so they can be seen with the naked eye.
B
Cells are too small to see with the naked eye, and a microscope magnifies them.
C
The lenses in a microscope reduce the image of an organism to the size of a cell.
D
Microscopes trap “animalcules” from pond water so they can be studied.

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