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Photo depicts Earth from space.
This NASA image is a composite of several satellite-based views of Earth. To make the whole-Earth image, NASA scientists combine observations of different parts of the planet. (credit: NASA/GSFC/NOAA/USGS)

Viewed from space, Earth offers no clues about the diversity of life forms that reside there. The first forms of life on Earth are thought to have been microorganisms that existed for billions of years in the ocean before plants and animals appeared. The mammals, birds, and flowers so familiar to us are all relatively recent, originating 130 to 200 million years ago. Humans have inhabited this planet for only the last 2.5 million years, and only in the last 200,000 years have humans started looking like we do today.

Exam PDF eBook: 
Chapter 10
Download Biology Ch 10 Exam PDF eBook
21 Pages
English US
Educational Materials

Sample Questions from the Chapter 10 Exam

Question: As a result of mitosis, each of the two new cells produced from the original cell during cytokinesis


receives a few chromosomes from the original cell.

receives an exact copy of all the chromosomes present in the original cell. (correct answer, your response)

donates a chromosome to the original cell.

receives exactly half the chromosomes from the original cell.

Question: At the equator during metaphase of mitosis, there are:


single chromosomes

duplicated chromosomes

G1-stage chromosomes

always 23 chromosomes

Question: During normal mitotic cell division, a parent cell that has 4 chromosomes will produce 2 daughter cells, each containing


4 Chromosomes

2 Chromosomes

8 Chromosomes

16 Chromosomes

Question: When cancer occurs,


control of the cell cycle is impaired

apoptosis has occurred

the cells can no longer enter the cell cycle

a lll of these are correct

Question: Chromatin condenses into chromosomes during which phase of mitosis?





Question: Microtubules that extend from the poles of a cell to the centromeres during cell division are called ._______


Spindle Fibers




Question: Collectively, the time spent in G1 + S + G2 is called . ______





Cell Cycle

Question: Which of the following happens when a cell divides?


Each daughter cell receives its own copy of the parent cell's DNA (correct answer, your response)

The cell's volume increases

It becomes more difficult for the cell to get rid of wastes

It becomes more difficult for the cell to get enough oxygen and nutrients

Question: Which of the following is a correct statement about the events of the cell cycle?


Telophase is part of the M phase, or mitosis

Nothing happens during the G1 and G2 phases

DNA replicates during cytokinesis (your response)

DNA replicates during cytokinesis (your response)

Question: Which event occurs during interphase?


Which event occurs during interphase?

The cytoplasm divides

Spindle fibers begin to form

Centromeres divide

Question: The chromosome of a bacterium


is wrapped around carbohydrates.

has a circular shape.

occurs in multiple pairs within the cell.

is found within the nucleus.

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