HOW MANY BONES ARE IN THE MIDDLE EAR CAVITY

5. How many bones are in the middle ear cavity?

Animal Cell Structure

Three parts:plasma membrane, cytoplasm,Of course, you may not be able to answer all of yournucleus.questions right away. You may need to do some extraPlasma membrane: Isolates cell from the envi-work to find the answer.ronment, regulates movement of materials inand out of cell, communicates with other cells.

H i g h l i g h t i n g a n d U n d e r l i n i n g

Cytoplasm: Includes water, salts, and enzymesthat catalyze reactions. Contains organellessuchas mitochondrion, which capture energy fromHere’s a good habit to get into: Whenever you read, havefood molecules.a pen, pencil, or highlighter in your hand. That way, asNucleus: Includes nuclear envelope(isolatesyou read, you can mark the words and ideas that arenucleus),nuclear pores(regulate the passage ofmost important to learn or remember. Highlighting andmaterials, including water, ions, proteins, andunderlining help make key ideas stand out. Importantinformation is then easy to find when you need to takeRNA; controls flow of information to and fromnotes or review.DNA),chromatin(DNA and associated pro-The key to effective highlighting or underlining is toteins) and, at innermost core,nucleolus(site ofbe selective.Don’t highlight or underline everything. Ifribosome assembly).you highlight every other sentence, nothing will standout for you on the page. Highlight only the key words

M a k i n g N o t e s

and ideas.But how do you know what you should highlight orMakingnotes is often as important as taking notes. Mak-underline? As you study for the GED, you should high-ing notes means that you respond to what you read.light or underline:There are several ways you can respond (“talk back to”)the text:

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words that are defined in the text

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main ideas

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key details that support or explain main ideas

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Write questions.If you come across somethingyou don’t understand, write a question.What

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words, grammar rules, and other items that youdoes this mean? Why did the author choose thisneed to rememberword? Why is this the best title? How is this differ-

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ideas or concepts that are new to youent from previous examples? Why is the informa-

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L E A R N I N G S T R AT E G I E S

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Outlines can have many layers and variations, but thistion in this chart important? What was the impactof this discovery? Then, answer all your questions.is the general form. Here are the notes for animal cellstructure presented in outline format:

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Make connections.Anytime you make connec-tions between ideas, you improve your chances ofremembering that material. For example, if youAnimal Cell StructureI. Three parts:plasma membrane, cytoplasm, nucleusare studying the Industrial Revolution, you mightA. Plasma membranemake connections between a number of keyinventions by imagining how cotton might move