Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Concept explainers
Oogenesis
The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase.
Cell Division
Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons:
Question
Transcribed Image Text:### Cell Division Quiz Question
**Question:**
Starting with a fertilized egg (zygote), how many cells would be produced after 4 rounds of cell division?
**Options:**
- 8
- 16
- 10
- 32
**Selected Answer:** 10 (Highlight in grey, indicating the selected answer)
**Explanation:**
Cell division through mitosis doubles the number of cells with each round. Starting with one zygote, the progression after each round is as follows:
1. **1st round:** 1 cell divides into 2 cells.
2. **2nd round:** 2 cells divide into 4 cells.
3. **3rd round:** 4 cells divide into 8 cells.
4. **4th round:** 8 cells divide into 16 cells.
Therefore, the correct answer is 16 cells.
**Diagram Explanation (if included):**
If there is a diagram illustrating the cell division rounds, it would typically start with a single cell (zygote) at the top and show subsequent divisions splitting this cell into more cells:
1 --> 2 --> 4 --> 8 --> 16 cells after four rounds. This helps to visually understand how the number of cells doubles with each division round.
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