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Science test chapter 3 (15 Cards)

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What term is defined as the basic building block from which all living organisms are made?

Cells

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Which of the following statements is not a part of the cell theory?

All cells require oxygen to survive
All living things are composed of cells
All cells come from other cells
Cells are the basic unit of all organisms

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Which organelle protects and controls what moves in and out of the cell?

Cell membrane

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What contains all of the genetic information about the cell?

DNA

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Finish this statement: "While not all cells have a true nucleus, all cells must contain some form of _."

DNA

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Traits are controlled by the

genes

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How many chromosomes are in a "normal" human cell?

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During which stage does the nucleus divide in two?

mitosis

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During which stage does the cell membrane of an animal look as if it is being pinched in the middle?

cytokinesis

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Which stage uses the most time for cell growth?

interphase

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List the three main stages of the cell in order.

interphase, mitosis, cytokinesis

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How does the complexity of a cell show that it must be a purposeful design?

A cell is so small, but not simple. It is made of tiny organelles that perform functions within the cell. These keep the cell and organism alive. Each cell has a cell membrane around it that carefully allows materials to go in and out.

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Why is each organism unique?

Organisms inherit traits from their parent organisms. Traits are determined by genes, which are made of DNA. DNA is made of molecules that fit together in different patterns. Since there are many patterns for each trait, each organism is unique.

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Describe how cancer forms.

Sometimes the DNA in a cell becomes damaged, causing a mutation. Cancer forms when cells divide uncontrollably, often forming tumors.

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What steps can be taken to help prevent cancer?

Eat healthy diets with fruits and vegetables.
Avoid the sun, tobacco products, and heavy alcohol use.
Wear sun screen, hats, and clothing to protect the skin.

Flashcard set info:

Author: Rebecca

Main topic: Science

Topic: Cells

School / Univ.: Freedom Baptist Schools

City: Hudsonville, MI

Published: 04.02.2010

Tags: Rebecca Thomas

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Science test chapter 3 (15 Cards)