Question

3. Explain the cell theory in detail. Include all 3 parts of the cell theory. (2 points)
0 / 10000 Word Limit
Question 4
4. Match the below answer choices into either unicellular or multicellular(4 points)
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
Unicellular Multicellular
Question 5
5. A scientist is observing 2 different frogs of the same species. 1 frog is green with yellow lines. 1 frog is green with yellow lines but also has red spots.

Which cellular feature determines if the frog has red spots or no red spots?

(1 point)
Responses

Based on the variations of the cell membrane.
Based on the variations of the cell membrane.

Through the stored material in the vacuole.
Through the stored material in the vacuole.

Information in the plasma membrane.
Information in the plasma membrane.

In the information present in the chromosomes in the nucleus.
In the information present in the chromosomes in the nucleus.
Question 6
6. Organelle differences between plant cells and animal cells. Plant cells have a cell wall, large vacuole, and mitochondria, while animal cells do not. (1 point)
Responses

True
True

False
False

Answer 1

3. Cell theory (detailed; include all 3 parts)
- Statement 1: All living things are composed of one or more cells.
- Every organism is either unicellular (a single cell carries out all life functions) or multicellular (many specialized cells work together).
- Early supporters: Schleiden (plants) and Schwann (animals) established that both plants and animals are made of cells.
- Statement 2: The cell is the basic unit of structure and function in living things.
- Cells are the smallest units that carry out life processes (metabolism, growth, response, reproduction at the cellular level when unicellular).
- In multicellular organisms, cells are specialized and organized into tissues/organs to perform functions.
- Statement 3: All cells arise from pre-existing cells.
- New cells form only by division of existing cells (Virchow’s contribution: “Omnis cellula e cellula”).
- This part rules out spontaneous generation and underpins understanding of development, growth, healing, and disease.
- Additional notes: Key historical contributors include Hooke (named “cells”), van Leeuwenhoek (observed single-celled organisms), Schleiden, Schwann, and Virchow. Modern refinements recognize exceptions/edge cases (e.g., viruses are not cellular and depend on host cells), but the three core points remain fundamental to biology.

4. Match items to Unicellular or Multicellular
Unicellular:
- Bacterium (e.g., Escherichia coli)
- Yeast (Saccharomyces cerevisiae)
- Amoeba (a single-celled protist)
- Paramecium (a single-celled protist)

Multicellular:
- Human
- Oak tree (plant)
- Frog
- Mushroom (the fruiting body of a multicellular fungus)

5. Which cellular feature determines red spots vs. no red spots?
- Correct answer: In the information present in the chromosomes in the nucleus.

6. Organelle differences between plant cells and animal cells statement:
- Statement: "Plant cells have a cell wall, large vacuole, and mitochondria, while animal cells do not."
- Answer: False (animal cells do not have a cell wall and typically have smaller vacuoles, but they do have mitochondria).