Question

question 3 1 pts
the discovery that all animals and all plants are composed of cells led to the development of which principle of the cell theory?

living things are composed of one or more cells.
all cells have genetic material.
all cells come from other cells.
cells contain specialized structures.

question 4 1 pts
which of the following was not part of the original cell theory, but was added later after we learned more about cellular structure?

all cells have the same exact structures
all cells come from pre-existing cells
all cells have a nucleus
all cells have the same basic composition

Explanation:

Analyze Question 3

Using the Cell Theory knowledge point

• The discovery by Matthias Schleiden (plants) and Theodor Schwann (animals) established that all living organisms are composed of cells.
• This directly supports the core tenet: "Living things are composed of one or more cells."

Analyze Question 4

Using the Modern Cell Theory knowledge point

• The original cell theory formulated by Schleiden, Schwann, and Virchow focused on cells as the basic unit of life and their origin from pre-existing cells.
• Modern cell theory expanded on this as scientific tools advanced, adding that all cells share the same basic chemical composition (such as containing DNA, proteins, and carbohydrates).

Answer:

Question 3

• (A) Living things are composed of one or more cells. (Correct answer)
• (B) All cells have genetic material.
• (C) All cells come from other cells.
• (D) Cells contain specialized structures.

Question 4

• (A) all cells have the same exact structures
• (B) all cells come from pre-existing cells
• (C) all cells have a nucleus
• (D) all cells have the same basic composition (Correct answer)