Ap Bio Concept Checks 1.1 and 1.2

Topics: DNA, Cell, Eukaryote Pages: 2 (572 words) Published: June 27, 2011
AP Biology Concept Checks
Gina Andraos

Concept Checks 1.1

1. For each biological level in Figure 1.3, write a sentence that includes the next “lower” level. Example: “A community consists of populations of the carious species inhabiting a specific area. ❖ The biosphere consists of all the environments that take place on Earth, including most regions of land, most bodies of water, as well as the ecosystems that combined to help make up the biosphere. ❖ An ecosystem consists of all the living things in a particular area—abiotic and biotic—where the entire array of organisms that inhabit are called a community. ❖ A community includes many kinds of trees and plants, as well as animals. All of the individuals of the same species living together create a population. ❖ A population is made up of a group of organisms—which are individual living things. ❖ All organisms consist of organs and the organ systems such as the digestive system, the tongue, the stomach, and the intestines. ❖ Organs are made of up a group of tissues that work together. At this level, tissues require the use of a microscope. ❖ To the next level, we have that each kind of tissue is a group of similar cells working together. ❖ Cells are the unit structure and function of all living things; though, even at the smallest level, cells contain numerous green structures called chloroplasts—known as organelles. ❖ Organelles—Chloroplasts being an example—are made up of teeny tiny chemical structures called molecules. ❖ Finally, molecules are composed of two or more small chemical units called atoms.

2. What are the relationships between these three genetic terms: DNA, genes, and chromosomes? Between these three terms, DNA, or deoxyribonucleic acid, are what partly make the chromosomes. Chromosomes structures are what are within cells. Lastly, genes are the units of inheritance that transmit information from parents to offspring in which DNA is...
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