AnswersAL-Science 7 ACell 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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3

Which statement is true regarding the traits of scatterplots?

A
The strength of a correlation is independent of whether the correlation of a scatterplot is positive or negative. A scatterplot with positive correlation can have either weak association or strong association.
B
The slope of a line is independent of whether the correlation of a scatterplot has positive or negative correlation. A scatterplot with a negative slope can have either positive correlation or negative correlation.
C
The nonlinear association of a scatterplot depends on whether it has a weak or strong correlation. A scatterplot with nonlinear association will have a strong correlation.
D
The nonlinear association of a scatterplot depends on whether it has a positive or negative correlation. A scatterplot with nonlinear correlation will have a negative correlation.
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

Which describes the correlation shown in the scatterplot?

Question illustration
A
There is a positive linear correlation.
B
There is a negative linear correlation.
C
There is no positive or negative correlation.
D
There is a nonlinear correlation.
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.
11

Identify from the graph if there is correlation, and whether it is positive or negative

A
There is a correlation, and it is positive.
B
There is a correlation, and it is negative.
C
There is no correlation.
12

Which accurately describe this scatterplot? Select all that apply.

A
There is a positive correlation.
B
It is clustered.
C
There is linear association.
D
As x increases, y increases.
E
There is negative slope.
13

Use the graph to identify whether there is linear association, nonlinear association, or no association. Explain.

A
It is linear because the points resemble a line.
B
It is nonlinear because the points resemble a curve.
C
There is no association because the points resemble a curve.
D
There is no association because the points do not resemble a line or curve.
14

Which best describes the association of this scatterplot?

A
linear, weak
B
linear, strong
C
nonlinear, weak
D
nonlinear, strong
15

Question text not available

A
It is positive because the slope is negative.
B
It is positive because the slope is positive.
C
It is negative because the slope is negative.
D
It is negative because the slope is positive.
16

Question text not available

A
Linear
B
Nonlinear
C
No association
17

Using the scatterplot, determine the association.

A
Linear association
B
Nonlinear association
C
No association
18

Identify the correlation in the scatterplot.

A
Positive correlation
B
Negative correlation
C
No correlation
19

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