1 / 9

A cell model

A cell model. Begin a new journal entry titled “A Cell Model”. (Make sure this is in your table of contents) QOTD: How does the food we eat get into our bloodstream, and eventually our cells?. Food Molecules. I have three types of molecules in these tubes – Starch, Protein, and Glucose.

mary-kirkland
Download Presentation

A cell model

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. A cell model • Begin a new journal entry titled “A Cell Model”. (Make sure this is in your table of contents) • QOTD: How does the food we eat get into our bloodstream, and eventually our cells?

  2. Food Molecules • I have three types of molecules in these tubes – Starch, Protein, and Glucose. • Starch – Complex Carbohydrate • Glucose – Simple Carbohydrate – Also, the primary energy source for your body • Protein – Coded for by DNA – Made in the cells.

  3. Indicator • An indicator is a known solution or substance that reacts when in the presence of specific molecules or types of molecules. • Lugol’s Iodine – Indicates the presence of Starch • Biuret Solution – Indicates the presence of Protein • Glucose Test Strip – Indicates the presence of Glucose

  4. Make a Table

  5. Materials List • 20 ml Syringe • Glucose, Starch, or Protein Solution • Lugol’s Iodine, Biuret, or Glucose test strips. • One 7 inch piece of Dialysis Tubing • Two 3 inch strings • One plastic cup • Distilled water • Electronic Balance

  6. Pair off into teams at your tables • We will be working in groups of two (three only if necessary) • Work with your partner today to develop an investigative question, a hypothesis, and a procedure

  7. Investigative Question • This question needs to ask about the relationship between at least two variables. • It must be able to be answered using the materials we have. • Can _________ cross a semi permeable membrane?

  8. Hypothesis • If, then, because – but it doesn’t have to be in those exact words. • A good hypothesis does the following: • 1. States the relationship between a manipulated variable and the responding variables • 2. States why the manipulated variable will cause a change in the manipulated variable.

  9. Procedure • This must be written so that someone else could reproduce your results. People omit a lot of steps because they think they are obvious. They are not. • Must be numbered, logical sequence that will include all steps necessary to complete both days of this lab.

More Related